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        Volume 87, Number 3, July 2006

Cover Photo: White-fronted Geese (Anser albifrons) gleaning rice fields after harvest near Lake Miyajimanuma, in central Hokkaido, Japan, appear to base their behavior on the advantages of group foraging. The geese benefit from aggregation in feeding flocks, because alarms about potential predators are quickly spread through the flock, despite the potential local depletion of food resources. The authors found that a model allowing for incomplete knowledge about the distribution of food resources, combined with the benefits of aggregation, best described both individual flock behavior and the seasonal variation in flock size. For additional photographs associated with the article by T. Amano, K. Ushiyama, S. Moriguchi, G. Fujita, and H. Higuchi, see “Incompletely informed group foragers” in the Photo Gallery.

Visit the Photo Gallery for more photographs submitted by our scientific journal authors.


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Table of Contents
(click on a title to view that section)

Governing Board

ANNOUNCEMENTS
Society Notices
Call for Student Award Judges


Other Notices
Defenders of Wildlife Conservation Support Network
Smithsonian Institution's Monitoring and Assessment of Biodiversity Training Course
Disease Ecology on the Web
EcoSummit
Workshops at The Centre for Research into Ecological and Environmental Modelling (CREEM)
Multivariate Analysis of Ecological Data


PHOTO GALLERY
-- Images from articles in our scientific journals
Reproductive Division of Labor. Kirk E. Anderson, Jürgen Gadau, Brendon M. Mott, Robert A. Johnson,
Annette Altamirano, Christoph Strehl, and Jennifer H. Fewell


Incompletely Informed Group Foragers. Tatsuya Amano, Katsumi Ushiyama, Sachiko Moriguchi, Go
Fujita, and Hiroyoshi Higuchi


Forest Disturbances. E. N. Broadbent, D. J. Zarin, G. P. Asner, M. Peña-Claros, A. Cooper, and R. Littell

Tropical Fruit Fly. Pierre-François Duyck, Patrice David, Guillemette Junod, Caroline Brunel, Raphaël
Dupont, and Serge Quilici


Coral Reef Recovery. Helen E. Fox and Roy L. Caldwell

Invasive Argentine Ants. Núria Roura-Pascual, Andrew V. Suarez, Kristina McNyset, Crisanto Gómez,
Pere Pons, Yoshifumi Touyama, Alexander L. Wild, Ferran Gascon, and A. Townsend Peterson

Salmon, Wildlife, and Wine. Joseph E. Merz and Peter B. Moyle

Adding Infection to Injury. Pieter T. J. Johnson, Eric R. Preu, Daniel R. Sutherland, John M. Romansic,
Barbara Han, and Andrew R. Blaustein

Oak Forest Insect Herbivores. June M. Jeffries, Robert J. Marquis, and Rebecca E. Forkner

CONTRIBUTIONS
Commentary
A History of the Ecological Sciences, Part 21. Réaumur and His History of Insects.F. N. Egerton

SEEDS of a New Millenium. SEEDS Scholars

DEPARTMENTS
Emerging Technologies
LINK: A Land Conservation Decision Support Tool

Society Section and Chapter News
Southeastern Chapter Newsletter

Instructions for Contributors


The BULLETIN OF THE ECOLOGICAL SOCIETY OF AMERICA (ISSN 0012-9623)
is published quarterly by the
Ecological Society of America, 1707 H Street, NW, Suite 400, Washington, DC 20006.
It is available online only, free of charge, at
http://www.esapubs.org/bulletin/current/current.htm›.
Issues published prior to January 2004 are available through
http://www.esapubs.org/esapubs/journals/bulletin_main.htm


Bulletin Editor-in-Chief E. A. Johnson

Bulletin of the Ecological Society of America, 1707 H Street, NW, Washington DC 20006
Phone (403) 220-7635, Fax (403) 289-9311,
E-mail: bulletin@esa.org

Associate Editor
David A. Gooding

ESA Publications Office,
127 W. State Street, Suite 301,
Ithaca, NY 14850-5427
E-mail: dag25@cornell.edu




Production Editor
Regina Przygocki
ESA Publications Office,
127 W. State Street, Suite 301,
Ithaca, NY 14850-5427
E-mail: esa_journals@cornell.edu

Section Editor, Ecology 101
H. Ornes
College of Sciences, SB310A, Southern Utah University
Cedar City, UT 84720 E-mail: ornes@ssu.edu



Section Editor, Public Affairs Perspective
N. Lymn
Director for Public Affairs, ESA Headquarters,
1707 H Street, NW, Suite 400,
Washington, DC 20036 E-mail: nadine@esa.org


Section Editors,
Emerging Technologies
D. W. Inouye
Department of Biology,
University of Maryland
College Park, MD 20742
E-mail: inouye@.umd.edu
and S. Scheiner
Div. of Environmental Biology
Natl. Science Foundation
4201 Wilson Blvd.
Arlington, VA 22230
E-mail: sscheine@nsf.gov

Section Editors,
Ecological Education: K–12

S. Barker

Dept. of Secondary Education
350 Education South,
University of Alberta
Edmonton, Alberta
T6G 2G5 Canada
E-mail: susan.barker@ualberta.ca
and C. W. Anderson
319A Erickson Hall, Michigan State University
East Lansing, MI 48824 USA.
E-mail: andya@msu.edu





The Ecological Society of America
GOVERNING BOARD FOR 2005–2006

President: Nancy B. Grimm, School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501
President-Elect:
Alan Covich, Institute of Ecology, University of Georgia, Athens, GA 30602
Past-President:
Jerry M. Melillo, Marine Biological Laboratory, Woods Hole, MA 02543
Vice President for Science:
Gus R. Shaver, The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA 02543
Vice President for Finance:
Bill Parton, Natural Resource Ecology Laboratory, Colorado State University, Ft. Collins, CO 80523-1499
Vice President for Public Affairs:
Rich Pouyat, 3315 Hudson St., Baltimore, MD 21224
Vice President for Education and Human Resources:
Carol A. Brewer, Division of Biological Sciences, University of Montana, Missoula, MT 59812-0001
Secretary:
David W. Inouye, Department of Biology, University of Maryland, College Park, MD 20742-4415
Member-at-Large:
P. Dee Boersma, Department of Zoology, University of Washington, Seattle, WA 98195-1800
Member-at-Large:
Shahid Naeem, Department of EEEB, Columbia University, New York, NY 10027
Member-at-Large:
Dennis Ojima, Natural Resource Ecology Laboratory, Colorado State University, Ft. Collins, CO 80523-1499

AIMS

The Ecological Society of America was founded in 1915 for the purpose of unifying the sciences of ecology, stimulating research in all aspects of the discipline, encouraging communication among ecologists, and promoting the responsible application of ecological data and principles to the solution of environmental problems. Ecology is the scientific discipline that is concerned with the relationships between organisms and their past, present, and future environments. These relationships include physiological responses of individuals, structure and dynamics of populations, interactions among species, organization of biological communities, and processing of energy and matter in ecosystems.

MEMBERSHIP
Membership is open to persons who are interested in the advancement of ecology or its applications, and to those who are engaged in any aspect of the study of organisms in relation to environment. The classes of membership and their annual dues for 2006 are as follows:
Regular member: Income level Dues
  <$40,000 $50.00
  $40,000—60,000 $75.00
  >$60,000 $95.00
Student member:
  $25.00
Emeritus member:   Free
Life member:
Contact Member and Subscriber Services (see below)  


Subscriptions to the journals are not included in the dues.
Special membership rates are available for individuals in developing countries. Contact Member and Subscriber services (address below) for details.

PUBLICATIONS
The Society publishes a bulletin, three print journals, and an electronic data archive. The Bulletin of the Ecological Society of America, issued quarterly, contains announcements of meetings of the Society and related organizations, programs, awards, articles, and items of current interest to members. The journal Ecology, issued monthly, publishes essays and articles that report and interpret the results of original scientific research in basic and applied ecology. Ecological Monographs is a quarterly journal for longer ecological research articles. Ecological Applications, published six times per year, contains ecological research and discussion papers that have specific relevance to environmental management and policy. Frontiers in Ecology and the Environment, with 10 issues each year, focuses on current ecological issues and environmental challenges: it is international in scope and interdisciplinary in approach. Ecological Archives is published on the Internet at ‹http://esapubs.org/Archive› and contains supplemental material to ESA journal articles and data papers.
No responsibility for the views expressed by the authors in ESA publications is assumed by the editors or the publisher, the Ecological Society of America.
Subscriptions for 2006 are available to ESA members as follows:
Regular Student
Ecology $65.00 $50.00
B
ulletin of the Ecological Society of America Free to members
E
cological Monographs $30.00 $25.00

Ecological Applications $50.00 $40.00
Frontiers in Ecology Free to members
Ecological Archives
Free


Application blanks for membership may be obtained from the Ecological Society of America, Member and Subscriber Services, 1707 H Street, NW, Suite 400, Washington, DC 20006, to which all correspondence concerning membership should be addressed. Checks accompanying membership applications should be made payable to the Ecological Society of America.
For additional information on the Society and its publications, visit ESA's home page on the World Wide Web http://esa.org›.



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ANNOUNCEMENTS

Society Notices


REQUEST FOR STUDENT AWARD JUDGES

Murray F. Buell Award
E. Lucy Braun Award

Judges are needed to evaluate candidates for the Murray F. Buell Award for the outstanding oral presentation by a student and the E. Lucy Braun Award for the outstanding poster presentation by a student at the Annual ESA Meeting at Memphis, Tennessee in 2006. We need to provide each candidate with at least four judges competent in the specific subject of the presentation. Each judge is asked to evaluate 3–5 papers and/or posters. Current graduate students are not eligible to judge. This is a great way to become involved in an important ESA activity. We desperately need your help!

Please complete and send this form by mail, fax, or e-mail to the Chair of the Student Awards Subcommittee: Christopher F. Sacchi, Department of Biology, Kutztown University, Kutztown, PA 19530 USA. Call (610) 683-4314; FAX: (610) 683-4854 or e-mail: sacchi@kutztown.edu

If you have judged in the past several years, this information is on file. If you do not have to update your information, simply send me an e-mail message, “Yes, I can judge this year.”

Name ______________________________________________________________________________________________
Current mailing address _______________________________________________________________________________
June/July mailing address _____________________________________________________________________________
Current telephone Summer telephone ____________________________________________________________________
E-mail Fax __________________________________________________________________________________________
Year M.S. received Year Ph.D received ______________________________________

Areas of expertise (check all that apply):
— Discipline Research approach (please rank) Organisms
— Botany Population ecology Vertebrates
— Zoology Community ecology Types:______________________________________________________________________
— Microbiology Ecosystem ecology Invertebrates
— Applied ecology Types:__________________________________________________________________________________
— Habitat Physiological ecology Plants
— Soil Behavioral ecology Types:____________________________________________________________________________
— Terrestrial Paleoecology Fungi
— Freshwater Theoretical ecology Microbes
— Marine Evolutionary ecology Types:_________________________________________________________________________

Provide a few key words or phrases that describe your interests and expertise: _________________________
________________________________________________________________________

________________________________________________________________________

 

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Other Notices

Defenders of Wildlife Conservation Support Network

Defenders of Wildlife recently launched the Conservation Support Network to assist federal employees inpromoting science-based solutions for the management of endangered wildlife. This program will better enableDefenders of Wildlife to work with federal employees on behalf of imperiled wildlife and advocate for a strongerrole for science in decision making. For more information, please visit the web site ‹http://www.conservationsupportnetwork.org›

The Smithsonian Institution's Monitoring and Assessment of Biodiversity Program (MAB)

The Smithsonian Institution's Monitoring and Assessment of Biodiversity Program (MAB) is offering a professional training course for international scientists, resource managers, and educators. The course will take place 17 September–9 October 2006 in Front Royal, Virginia, USA at the National Zoo's Conservation and Research Center. The cost is $3350, which includes tuition, course materials, lodging and meals, and local transportation. Topics include vegetation, mammals, and arthropods, an introduction to project planning, GIS, and statistics. For more information contact Melissa Bellman at bellmanm@si.edu or look online at ‹www.si.edu/simab›.

Disease Ecology On The Web


The Yale Institute for Biospheric Studies, Center for EcoEpidemiology, has posted two forum proceedings recently held at Yale on its web site ‹http://www.yale.edu/yibs/research/CEE›.

The “Forum on Climate and Disease” (held on 9 and 10 December 2005) features talks by Richard Spinrad (NOAA), David Rogers (Oxford), Duane Gubler (Hawaii), Daithi Stone (Oxford), Rita Colwell (Maryland), Gregory Glass (Johns Hopkins), Rodolfo Acuna-Soto (Mexico), Cecil Viboud (NIH), and Andrew Comrie (Arizona).

The “Forum on Avian Reservoirs of Human Pathogens” (held on 21 April 2006) features talks by Robert Webster (St. Jude Hospital), Nicholas Komar (CDC), Bjorn Olsen (Sweden), Durland Fish (Yale), Theodore Andreadis (CAES), Jonathan Day (Florida), John Sauer (Patuxent, Maryland), Peter Mara (Smithsonian Institution), and William Karesh (WCS).

Complete audio and video of each presentation (17 hours total) can be selected using Real Player and a broadband connection. The presentations are high quality and suitable for classroom use.


The world is experiencing rapid urbanization, industrialization and globalization. The pace, depth, and magnitude of these changes, have exerted severe ecological stresses on humankind living conditions and life support ecosystems across all scales - from local to regional, and global scales. Water shortages, desertification, soil degradation, greenhouse gas emissions, elevated sediment and nutrient fluxes to the coastal seas and other environmental problems are increasingly becoming the common side effects of those human activities. Sustainability can only be assured with an ecological understanding of the complex interactions between environmental, economic, political, and social/cultural factors and with careful planning and management grounded in ecological principles. Ecological complexity and sustainability are becoming a core concept and instrument for improving our common future.

This Eco Summit will focus on integrative aspects of all ecological science and its application under the general theme of “Ecological Complexity and Sustainability: Challenges and Opportunities for 21st-Century’s Ecology”.

The aim of this Eco Summit is to encourage a greater integration of both the natural and social sciences with the policy and decision-making community to develop a better understanding of the complex nature of ecological systems. This understanding will provide the basis for sustainable solutions to environmental problems.

We expect this meeting to attract the broadest representations of ecological organizations, ecologists and practitioners on ecological sustainability issues from all over the world. We intend to show the unification and determination of our ecological community as a whole to maximize our commitment to use ecological knowledge and understanding to meet the challenges raised from the Earth Summit (1992), the World Summit on Sustainable Development (2002), and the United Nations 2005 Millennium Review Summit.

Our scientific program will feature: plenary sessions, symposia, contributed oral and poster sessions, and special evening sessions. A variety of scientific field trips will also be planned.

We will have 14 world known plenary speakers and more than 10 Elsevier ecology journals plan to publish special issues from this conference. The language of the conference is English.
For more information go to ‹http://www.ecosummit2007.elsevier.com/›.

Workshops at The Centre for Research into Ecological and Environmental Modelling (CREEM)

The Centre is hosting three linked workshops in the summer of 2006 in our purpose-built facilities at the University of St Andrews, Scotland. The aim of these workshops is to train participants in the latest methods for design and analysis of distance sampling surveys, including line and point transects. The workshops are taught by leading researchers in the field, using industry-standard software.

The first workshop (3 days) will run at an introductory level, and will focus on "conventional" distance sampling methods, as described in the standard reference book Introduction to Distance Sampling. The workshop will be a blend of theory and practice and participants will learn how to use the program “Distance.” Participants will gain a solid grounding in both survey design and methods of analysis for distance sampling surveys.

The second workshop (2.5 days) will cover recent advances in distance sampling research and software, as described in the book Advanced Distance Sampling. It is intended for those already familiar with conventional distance sampling methods (e.g., those who have attended an introductory workshop). Participants will learn the use of covariates for modelling the detection function, double-platform methods for when detection at the line or point is not certain, automated survey design, and adaptive sampling. Participants will also learn the more advanced features of “Distance.”

The third workshop (2.5 days) will focus on methods of predicting abundance or density of biological data using the "count" method of Hedley and Buckland (Advanced Distance Sampling:Chapter 4, 2004. In these situations variation in animal density/abundance is modeled as functions of covariates such as land cover type, bathymetry, altitude, or depth, or other characteristics collected during a distance sampling survey. General additive models (GAMs) or general linear models (GLMs) will be fitted to estimated densities along transects using a new analytical engine inside the program “Distance.” This is an advanced workshop for those already familiar with distance sampling.

For all three workshops, participants are encouraged to bring their own data sets, and can expect to do some preliminary analyses with their data. Participants intending to model their own data in the third workshop will be required to have it formatted according to precise specifications prior to arrival at St. Andrews. Computer sessions take place in our modern PC-classroom (attached to the seminar room); participants can use our computers or bring their own PC laptops.

Further details can be found at our web site:
http://www.ruwpa.st-and.ac.uk/distance.workshops/› or contact:

Eric Rexstad
Research Unit for Wildlife Population Assessment
Centre for Research into Ecological and Environmental Modelling
University of St. Andrews
St. Andrews Scotland KY16 9LZ
+44 (0)1334 461833

Multivariate Analysis of Ecological Data

Do You Want to Learn More About Analyzing Your Data?

Come and take part in the course we have been offering for almost 10 years: Multivariate Analysis of Ecological Data using CANOCO. This course will be held again from 16–27 January 2007 in Ceske Budejovice, Czech Republic. Course participants are introduced to the modern way of analyzing multivariate data, with much time allocated to work on their own projects.

In-depth lectures and practicals are provided for the following topics:

  • Classical ordination methods (PCA, CA, DCA, PCO, NMDS),
  • Constrained ordination methods (RA, CCA) including partial analyses and permutation tests of multivariate hypotheses,
  • Effective production and interpretation of ordination diagrams.

All the ordination methods will be demonstrated using the latest version of the CANOCO for Windows package. In addition, classification methods (cluster analysis, TWINSPAN), modern regression methods (GLM, GAM, CART), and the principles of experimental design will be introduced during the course.

This course centers around the book written by course lecturers and published by the Cambridge University Press: J. Lepš and P. Šmilauer, Multivariate Analysis of Ecological Data using CANOCO (2003).

All the necessary details about the course can be found at its web page
http://regent. jcu.cz›; you can also contact the course manager, Petr Šmilauer,
E-mail: petrsm @jcu.cz

Jan Lepš and Petr Šmilauer
Faculty of Biological Sciences
University of South Bohemia, České Budějovice
Czech Republic

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PHOTO GALLERY


(all rights reserved, used by permission)

Click on images for a larger view


Reproductive Division of Labor

gynes

Two gynes produced by an incipient GCD colony devouring the larva of a sibling worker.

The reproductive division of labor is perhaps the defining and most interesting feature of social insect success. The worker caste is sterile and performs all tasks related to colony maintenance and growth. The queen caste specializes in reproduction, generating tens of thousands of worker eggs over the course of her life, but colony fitness is determined primarily by the production of new reproductive individuals, males and potential new queens (gynes). Subsequently, this reproductive potential depends on early and sustained worker production such that the colony can attain reproductive maturity.

The process of caste determination in most social insects is governed by environmental influences on development, but colonies from many populations of Pogonomyrmex barbatus exhibit genetic caste determination (GCD) generated by the interbreeding of two distinct yet interdependent lineages. Maintenance of this system relies on obligate polyandry, because same-lineage matings produce gynes, while alternate-lineage matings produce workers. The sperm ratios acquired from mating randomly with multiple males of each lineage result in a genetic load for a subset of queens that mate with primarily same-lineage males. This translates into a nutritional load for the incipient colony because the limited resources of the founding queen are diverted from worker production, and invested in nonfunctional gyne-destined brood.
This photograph illustrates the article, “Distribution and evolution of genetic caste determination among cryptic lineages of seed-harvester ants Pogonomyrmex barbatus and P. rugosus,” by Kirk E. Anderson, Jürgen Gadau, Brendon M. Mott, Robert A. Johnson, Annette Altimirano, Christoph Strehl, and Jennifer H. Fewell, tentatively scheduled to appear as part of the Special Feature on Interspecific Hybridization in Ants, in Ecology 87(9), September 2006.

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Incompletely Informed Group Foragers

(all rights reserved, used by permission)

Click on photos for a larger image.

White-fronted Goose

Many species face uncertainties about foraging patch quality in their decision-making processes. White-fronted Geese (Anser albifrons) foraging on harvest remains of rice in Japan represent a typical example. The geese are likely to be uncertain about the distribution of poorly visible rice grains among straw in the harvested fields (Figs. 1 and 2), while seasonal variations in the flock sizes of geese seem to be determined by the trade-off between the costs and benefits of group foraging (Fig. 3), which cannot be explained by existing social foraging models. We developed a new foraging model for incompletely informed foragers that benefit from foraging in groups, where expected gain rates were used for decision making on diet choice, patch departure, and flock joining. This model agreed most closely with the observed patterns, both in the spatial distribution and fat deposition parameters of geese, compared to existing models. Therefore, we concluded that these White-fronted Geese seem to use expected gain rates for decision making with incomplete information on foraging patch quality.

These photographs are associated with the article by Tatsuya Amano, Katsumi Ushiyama, Sachiko Moriguchi, Go Fujita, and Hiroyoshi Higuchi, “Decision-making rules in group foragers with incomplete information on patch quality: a test with White-fronted Geese using an individual-based model,” which is tentatively scheduled to appear in Ecology 87(11), November 2006.

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Forest Disturbances

(all rights reserved, used by permission)

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Ficus boliviana

A canopy emergent tree (Ficus boliviana), nearly 40 m tall, stretches its branches over the rain forest canopy in a logging concession in lowland Bolivia. During selective logging such trees are felled, producing gaps in the forest canopy. Selective logging in Bolivia, and throughout the Amazon, produces distinctive patterns of forest disturbances, including felling gaps, skid trails, and roads. Recent advances in satellite imagery analysis may help to detect these disturbances, and thus to detect logging activities, over large areas. However, to date the sensitivity of these analyses to forest disturbances in Bolivian forests have not been quantified.

The influence of forest disturbances from selective logging on new and established remote-sensing analytical methods are investigated in the article by E. N. Broadbent, D. J. Zarin, G. P. Asner, M. Peña-Claros, A. Cooper, and R. Littell, “Recovery of forest structure and spectral properties after selective logging in lowland Bolivia,” published in Ecological Applications 16(3), June 2006.

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Tropical Fruit Fly

(all rights reserved, used by permission)

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A female of the Mascarenes fruit fly, Ceratitis catoirii Guérin-Mèneville. This endemic species from Mascarenes (a tropical archipelago of the Indian Ocean), is a weaker competitor compared to the three successive invasive fruit flies from the same family (Tephritidae) now present in the archipelago. Ceratitis catoirii has become extinct in Mauritius and is now very rare in La Réunion.

The photograph is associated with the article by Pierre-François Duyck, Patrice David, Guillemette Junod, Caroline Brunel, Raphaël Dupont, and Serge Quilici, “Importance of competition mechanisms in successive invasions by polyphagous tephritids in La Réunion Island,” published in Ecology 87(7):1770–1780.

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Coral Reef Recovery

(all rights reserved, used by permission)
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coral

An undamaged coral reef in Indonesia (Left), adjacent to a crater left by a home-made bomb used for reef fishing (upper right, two years after the blast). There was substantial recovery from single blasts after five years (lower right). However, the multiple blasts characteristic of extensive and continued reef fishing using explosives left a shifting rubble field, producing an unstable substrate for the settlement of new corals, and preventing reef recovery during the seven years of the study. Photo credits; left photo, R. Caldwell; right photos, H. E. Fox.

The article with which these photographs are associated, by Helen E. Fox and Roy L. Caldwell, “Recovery from blast fishing on coral reefs: a tale of two scales,” is tentatively scheduled to appear in Ecological Applications16(5), October 2006.


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Invasive Argentine Ants Tending Scale insects on Citrus Trees in California

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By applying an ecological niche modeling approach, our study examines the role of niche similarities and differences in predicting the geographic potential of a highly successful invasive species. Native to South America, Argentine ants (Linepithema humile) are now established worldwide, causing severe ecological and economic impacts (as seen on the photographs, where Argentine ants tend scale insects on citrus trees in California). In spite of some geographic variations between regions, our model results suggest that ecological niche characteristics of the Argentine ant do not differ markedly between native and invaded ranges at the spatial and temporal scale of our analysis.

The photographs are associated with the article by Núria Roura-Pascual, Andrew V. Suarez, Kristina McNyset, Crisanto Gómez, Pere Pons, Yoshifumi Touyama, Alexander L. Wild, Ferran Gascon, and A. Townsend Peterson, “Niche differentiation and fine-scale projections for Argentine ants based on remotely sensed data,” tentatively scheduled to appear in Ecological Applications 16(5), October 2006. Photographs by Alexander L. Wild.

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Salmon, Wildlife, and Wine

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Turkey vulture and salmon carcass. The scene shows a turkey vulture (Cathartes aura), a common scavenger of salmon carcasses in the California Central Valley. Even in human-dominated watersheds, wherever salmon runs still remain, carcasses continue to provide an important ecological component to these systems, including source nitrogen for riparian crops, such as wine grapes.

Gray fox and salmon carcass. The scene shows a gray fox (Urocyon cinereoargenteus), a scavenger of salmon carcasses in the California Central Valley.


Salmon nutrients in human-dominated ecosystems. This composite displays a variety of vertebrate scavengers responsible for the transfer of salmon-derived nitrogen to riparian vegetation, including wine grapes in California’s Central Valley (center). Clockwise from upper left: opossum (Didelphis marsupialis), striped skunk (Mephitis mephitis), river otter (Lutra canadensis), Red-tailed Hawk (Buteo regalis), coyote (Canis latrans), Turkey Vulture (Cathartes aura), mule deer (Odocoileus hemionus), and gray fox (Urocyon cinereoargenteus).

The photographs are associated with an article by Joseph E. Merz and Peter B. Moyle, “Salmon, wildlife, and wine: marine-derived nutrients in human-dominated ecosystems of Central California,” published in Ecological Applications 16(3):999–1009, June 2006. All photographs by Joe Merz.

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Adding Infection to Injury

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Long-toed salamanders (Ambystoma macrodactylum) exhibit a wide diversity of limb and digit malformations following exposure to injury and parasite infection. Despite numerous historical accounts of limb anomalies in salamanders, the causes and implications of such abnormalities have rarely been examined. By combining field studies and controlled experiments, results of this article suggest that conspecific attack and trematode infection may interact synergistically to determine the frequency and severity of limb abnormalities in salamanders.


Limbs exposed to both injury (a common result of attempted predation) and Ribeiroia infection exhibited 3–5 times more malformations than those exposed to either factor alone, including extra limbs, extra digits, skin webbings, and truncated bone structures. These findings emphasize that the effects of predators and parasites need not be antagonistic; instead, the two may interact positively to affect the levels of disease. The photograph shows a cleared and stained salamander from the parasite exposure experiment, illustrating the extent of bone malformations.

The article with which these photographs are associated, by Pieter T. J. Johnson, Eric R. Preu, Daniel R. Sutherland, John M. Romansic, Barbara Han, and Andrew R. Blaustein, “Adding infection to injury: synergistic effects of predation and parasitism on amphibian malformations,” is tentatively scheduled to appear in Ecology 87(9), September 2006.

(Top photo) Photograph by P. T. J. Johnson. (Lower four photos) Photography, clearing, and staining credits: Stanley K. Sessions. Used by permission, all rights reserved.

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Oak Forest Insect Herbivores

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This study shows that the community of insect herbivores on white oak (Quercus alba L.) changes in concert with that of the plant community across a chronoseries of Missouri oak forests ranging in age from 2 years to 300+ years. Insect herbivore richness and abundance on white oak in the communities pictured here increases with forest age. In addition, insect communities in forests 122-300+ years are uniquely different from those found on white oak in forests of younger age.

Image map

Photo captions, left to right:

First row: Eighteen years after harvest, Mark Twain National Forest, Doniphan Ranger District. Over 100 years after harvest, Mark Twain National Forest, Potosi Ranger District. The 300 + year-old Current River Natural Area is one of the few examples of old-growth forest in Missouri. In 1954 this old forest was purchased by Leo Drey, a Missouri forester, to protect it from imminent conversion to whiskey barrels. Mr. Drey donated the forest to the L-A-D Foundation in 2004. These three photos by Matt Jeffries.

The remaining photos depict some of the most abundant insect herbivores of white oak (Quercus alba) found in the Missouri Ozark region. Over 260 insect species can be found feeding on Missouri oaks. Because insect diversity increased with increasing forest age, to ages well beyond those normally harvested for timber resources, our results suggest that the timing and spatial distribution of timber harvests may influence insect herbivore diversity on white oak. All insect photos by Robert Marquis.

Second row: Chionodes adamas (Hodges) (Gelechiidae) is an abundant spring leaf roller that curls the oak leaf into a sheltering roll. Himella intractata (Morr.) (Noctuidae) is an abundant herbivore on white oak, found only in the spring on expanding leaves. Lambdina fervidaria (Hbn.) (Geometridae), is often abundant in the spring and summer in the Ozarks (final instar shown).

Third row: Phyllonorycter fitchella (Clem.) (Gracillaridae), abundant throughout the spring, summer, and fall, is a tiny leaf-miner, feeding within the cell layers of the leaf to form a characteristic blotch. This Stigmella species (Nepticulidae) is a leaf-miner that creates a serpentine path inside the leaf, leaving a dark trail of frass inside. Acronicta increta (Morr.) (Noctuidae) is usually found resting in a “C” shape. The last instar caterpillars can be quite variable in color pattern. There are two generations per season in our region.

Fourth row: Pseudotelphusa sp., (Gelechiidae) is known as a leaf-tying ecosystem engineer. The leaf sandwich this moth caterpillar creates by joining leaves with silk anchors provides shelter for many other arboreal arthropods. The caterpillars of Pococera expandens Walker (Pyralidae) are gregarious in early instars and tie multiple leaves into a silken nest. The nests are often filled with frass, as seen in this photo. Psilocorsis reflexella (Pack.) (Oecophoridae) is a late-season leaf tier. The head capsule and exuvium of the previous instar can be seen just above the caterpillar.


These photographs illustrate the article by June M. Jeffries, Robert J. Marquis, and Rebecca E. Forkner, “Forest age influences oak insect herbivore community structure, richness, and diversity,” published in Ecological Applications 16(3):901–912, June 2006.

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CONTRIBUTIONS

Commentary


A History of the Ecological Sciences, Part 21:
Réaumur and His History of Insects

On 21 November 1877, Thomas Henry Huxley gave a talk at Cambridge University, occasioned by the presentation of an honorary LL.D degree to Charles Darwin, in which he commented (Huxley 1900, I:480): “ I know of no one who is to be placed in the same rank with [Darwin] except Réaumur.” Had he spoken a few years later he could have added Louis Pasteur to that tiny group of our greatest biologists. The range of sciences that Réaumur investigated was as broad as Darwin’s, and his lifelong productivity may have been comparable (Wheeler 1926:263–274, Torlais 1961, Grasse 1962, Gough 1975, Drouin 1995), though Réaumur is credited with no scientific theory like Darwin’s theory on evolution by natural selection. Réaumur is remembered for his thermometer (1731), but one historian of meteorology thinks “ his work on thermometry was far below the standard of much of his other scientific work” (Middleton 1966, 1979). Perhaps so, but his thermometer nevertheless dominated France until replaced in revolutionary France by the Centigrade thermometer in 1794 (Birembaut 1958). His thermometric studies may have piqued his interest in the relationship between temperature and the rate at which insects develop. His primary fame and importance rests on his Mémoires pour servir à l’histoire des insectes (six volumes, 1734–1742), which is also where his significance for ecological sciences lies. Because of his studies on insect behavior, Wheeler (1926, 1936) considered him a founder of ethology.



Fig. 1. Réaumur as a young scientist.

René-Antoine Ferchault de Réaumur (1683–1757) was from a prominent La Rochelle family, and he probably attended Catholic schools there and elsewhere before going to Paris in 1703. In Paris he studied mathematics under Pierre Varignon, who nominated him for membership in the Académie Royale des Sciences, to which he was admitted in 1708. During his career he was its director 12 times and its subdirector 9 times. French iron and steel production was backward compared to some other European countries, and the government generously supported his experiments to improve this technology. His book on iron production (Réaumur 1722) is translated into English (1956), as are his The Art of Hatching and Bringing Up Domestic Fowls (Réaumur [French edition] 1749, [English edition] 1750), his incomplete memoirs on ants (1926), and part of his memoirs on bees (1800). In French, there is an excellent, if unillustrated, modern anthology of his writings compiled by his biographer, Jean Torlais, that includes extracts from incomplete memoirs on ants, spiders, beetles, frogs, and toads (Réaumur 1939:213–255). (Amphibians and reptiles fell under his concept of “insects.”) His early papers on geometry (1708–1709) were outstanding (Taton 1958), and in 1740 he drew upon mathematics in discussing the construction of honeycombs by bees (Réaumur 1734–1742, V:389, Drouin 1995:206–207). In 1709 he began studying the growth of shells of aquatic animals, and he subsequently investigated a wide range of natural history topics, including the silk of spiders (1710), making purple dye from mollusks (1711), regeneration of crustacean legs (1712), and the production of artificial pearls (1717). His movement toward entomology was gradual, and did not involve abandonment of other investigations.

Réaumur’s first notable study on insects was on the clothes moth (1728), and this led to his study of caterpillars in the first volume of his history of insects. He had already written at the beginning of the introduction to Volume I (Réaumur 1734–1742, I, 3; translated by Wheeler in Réaumur 1926:29):

I am not in the least inclined towards a precise enumeration of every kind of insect, even if could be undertaken. It seems to me sufficient to consider those kinds which prove to us that they deserve to be distinguished…the many hundreds and hundreds of species of gnats and very small moths which exhibit nothing more remarkable than a few slight differences in the form of the wings or legs, or varieties of coloration or of different patterns of the same colours, may be left confounded with one another.

He was right about the countless species of insects, but John Ray’s approach of trying to identify and study those in one’s locality was a good strategy. Fortunately, Réaumur’s volumes are well illustrated. Like Leeuwenhoek, he was no draftsman, but hired one or more women who were competent. His species were identified and named by Carl Linnaeus (1758:362–618) and later restudied by Vallot (1802) and Bodenheimer (1928–1929, I:415–448 and II:379–399). A few determinations remain debatable (Müller and Wheeler 1982), but that probably would have been true even if Réaumur had been more concerned with naming them himself.

Hawkmoth caterpillars refused all food except leaves of spurge. He put some of its milky juice on his tongue and soon his mouth was on fire, and washing did not relieve it. Yet hawkmoth caterpillars drank it with no ill effects. When he put caterpillars of the cabbage moth (Mamestra brassicae) and the common dagger-moth (Acronycta sp.) with young cabbages, the next day he failed to find them. Yet the cabbage leaves were gnawed. When he searched the earth in the pots with cabbages, he found them. He returned at night with a candle and found them feeding on the leaves (Miall 1912:254–255).


Fig. 2. Caterpillars, chrysalises, and butterflies, showing specific species attracted
to specific plant species. Réaumur 1734–1742, II:Plate 2.

The first memoir of the second volume concerns the effect of temperature on the time needed for insects to develop, a topic that Swammerdam and Leeuwenhoek had briefly explored. Pupae kept in hothouses in winter produced moths long before others kept in cool places. He also froze some caterpillars in 1736 and later discovered they were still alive when thawed (Rostand 1962a, b). Realizing that insects develop faster in warm weather, Réaumur (1734–1742, II:322–315) attempted to estimate the annual rate of increase for a butterfly, which he knew developed in about a month in warm weather. He had seen adults of the species throughout the year, but since he knew it would develop slower during the winter, he estimated that there were probably seven generations per year. Since females laid 9 to 14 eggs, he used 10 eggs in calculations. Using Leeuwenhoek’s method of calculation (Egerton 1967:2006), he showed that from one breeding pair, 156,250 individuals could be produced in the seventh generation, and that the year’s total was 195,310. Since no such rate of increase was achieved, he concluded that a worm he described limited the increase by eating immature forms.

In a following memoir, Réaumur (1734–1742, II:335–339) discussed a plague of caterpillars (Plusia gamma) that had erupted throughout France in June and July 1735. The butterfly involved produced only one batch of eggs in its lifetime. The first generation of the season developed in the spring from eggs that had overwintered. This generation then produced another generation that laid the eggs that next overwintered. A female laid about 400 eggs, which meant that if there were only 20 individuals hatched in a locality in the spring, the second generation could potentially produce 800,000 eggs to overwinter. He then concluded that it was not as important to explain why a plague erupted occasionally, as to explain why it did not happen more often. First, every species of butterfly has parasites and predators, which greatly limit its numbers. Diseases and weather likewise restrict their increase. A plague year would therefore occur when weather favored the butterfly but not its diseases, parasites, or predators. This explanation was in accordance with the fact that caterpillars had been very numerous in autumn 1731, spring 1732, and in 1737. But a plague of the proportions of 1735 had not occurred during those three years because flies that lay eggs in the caterpillars had also been numerous. Réaumur repeated from Richard Bradley’s A General Treatise of Husbandry and Gardening (1721–1724, II:221) the plausible but inaccurate statement that killing two butterflies in August before they reproduced was as good as killing 8000 caterpillars the following June.

Memoir 5 in Volume II is on leaf rollers and leaf folders. He explained that one can watch these caterpillars at work by cutting off leaves that are rolled or folded, expelling the caterpillars, and then placing them on other leaves of the same plant. They quickly work to conceal themselves using these leaves, securing their abode with silk threads.


Fig. 3. Leaf rolling and folding caterpillars. Réaumur 1734–1742, II:Plate 16.

The same leaf that provides shelter is also eaten. Tortrix caterpillars are common on oaks in summer, and sometimes completely strip the trees of leaves. In its rolled leaf, it is screened from view by outer turns of its green case, and can eat inner turns at leisure. It must have a way to escape an enemy. It moves with great agility and often escapes at an open end of its tube, and then drops off the leaf on a silk thread; when all is quiet, it climbs back to its leaf, coiling the thread and eating it. When it outgrows one tube, it builds another; the last one become the chrysalis in which it changes to an adult (Miall 1912:264–265). Réaumur devoted Memoir 11 in Volume II to the enemies of caterpillars, describing in detail many of their predators and parasites. He stressed knowing which species were harmful (believing there were only about a dozen in France), and which animals attack them.


Fig. 4. Insect galls had already been studied in detail by Redi, Leeuwenhoek, and others before Réaumur, yet the subject was vast enough for him to make new discoveries. Réaumur 1734–1742, III:Plate 40. Captions (pages 521–522 for Plate 40) describe all the figures in detail.

Réaumur made substantial contributions to the knowledge of parasites, studying parasitic fungi, worms, mites, and insects (Bodenheimer 1931:412–414, Théodoridès 1959a). In the preface to Volume II (1736) he reviewed claims for spontaneous generation of insects, and then agreed with Redi, Swammerdam, and Leeuwenhoek that such ideas were undermined by careful study: “No species of insect generates any insect of a species other than its own.” (Réaumur 1734–1742, II:xl). He explained that what we call entomophagos parasites arise in three ways: (a) by the parasite’s eggs introduced from plant leaves, (b) by the parasite fixing its eggs on the body of the caterpillar, and (c) by the parasite laying eggs in the body of the caterpillar. He provided a clear illustration of larvae of the ichneumonid fly Apaneles glomeratus inside a pierid (Whites family) caterpillar (Réaumur 1734–1742, II:Plate 34, reproduced in Théodoridès 1959a:xv). Eventually he observed the flies coming from the worms in the caterpillars (Réaumur 1734–1742, II:440–442). In some larval entomophagos endoparasites he discovered ectoparasites (hyperparasites, pp. 444–445) and species that lay their eggs in the eggs of butterflies (oophagos parasites, p. 448).

Leeuwenhoek had discovered that aphids are parthenogenic (Egerton 2006), which attracted great interest. In Volume III, Memoir 9, Réaumur claimed that both winged and wingless aphids are adults, since both are viviparous. Leeuwenhoek had thought the wingless ones were immature and would later acquire wings. Leeuwenhoek had also concluded that ants prey on aphids (they do, rarely, on injured ones; Réaumur 1926:158), but later naturalists had concluded that ants merely drink the honeydew produced by aphids, and Réaumur agreed. He discovered red ants (probably Formica rufa) that live underground with grey aphids (Miall 1912:270).

Robert Hooke (1665:185–191), as we have seen (Egerton 2005:95), laid a good foundation for mosquito studies using his microscope, and Réaumur followed his example. When he had the thorax and head of mosquitoes drawn, he and his draftswoman also used either a microscope or magnifying glass (Fig. 5). It is one of six excellent plates he devoted to them. Of course, at the time, no one knew that female mosquitoes transmit deadly microorganisms when they bite, so their status was that of an annoying pest rather than a dangerous one. Nevertheless, three authorities on mosquitoes commented: “Réaumur, in his classic work [1734–1742, IV:615–622], gives a detailed and most interesting account of the egg-laying process in the common house-mosquito, Culex pipens. The account of this wonderful observer is so faithful that we reproduce it here…” (Howard et al. 1912:140). They quoted it in English translation, but it is too long for me to repeat.


Fig. 5. Thorax and heads of mosquitoes. Réaumur 1734–1742, IV:Plate 41,
Fig. 1 male, Figs. 2–7 biting females.

Réaumur’s Memoirs 5–13 in Volume V (1740), more than 500 pages, constitute the most important treatise on bees published in the 1700s (Miall 1912:271–274, Théodoridès 1959a:71–74 and 1968:27–31). It is partly translated into English (Réaumur 1800). It includes description and illustrations (reproduced in Théodoridès 1959a:xvi) of Braula caeca, a dipterous ectoparasite of bees, which he called a “pou” (louse) (pp. 711–712 and Plate 38,

Figs. 1–3). In the first memoir of Volume VI he reported that inside the bodies of bumble bee (Bombus) queens he found and illustrated (Plate 4, reproduced in Théodoridès 1959a:vii) clusters of worms. Sometimes the cluster was as large as a small cherry, and at first he thought they were the “germs” (sperm) that enter the eggs, but further study showed they were eel-like worms that live at the expense of the female. Furthermore, they prevented her eggs from developing (Réaumur 1734–1742, VI:22–23). Théodoridès (1959a:vi) tells us that this nematode (Sphaerularia bombi) was only officially named and described in 1837 by Léon Dufour.

Réaumur described in detail, and had illustrated in detail, flies that lay eggs on or in the skin of mammals (illustrations reproduced in Théodoridès 1959a:xvii–xxiii). Particularly innovative was his illustration of fly larvae and pupae that infect the pharynx of deer (Fig. 6).


Fig. 6. Deer head dissected to reveal fly larvae and pupa. Reaumur 1734–1742, V:Plate 9.

Réaumur had intended to publish a seventh volume of his insect histories, and he made a good start on it (Réaumur 1939:213–255). His seven memoirs on beetles for this volume was virtually complete, with 21 plates having numerous illustrations, yet it remained unpublished until 1955. It merits the detailed attention of a historian of entomology, but I pass over it here in favor of his incomplete memoir on ants, which is briefer, but has the advantage of being about social insects, which have more general appeal than species having solitary habits, and is available in both French and English versions. The reason William Morton Wheeler chose to translate Réaumur’s manuscript on ants rather than the one on beetles is obvious: Wheeler was a leading authority on ants (Evans and Evans 1970).

Réaumur wrote “Histoire des fourmis” for Volume VII, probably between October 1743 and the end of January 1744 (Wheeler 1926:xiv), though he set it aside before he completed it. Wheeler first edited and published it with annotated translation in 1926; the “Histoire des fourmis” and part of his treatise on bees remain Réaumur’s only substantial writings on insects in English. Much of the treatise on ants is of ecological interest. His experiments on ants were innovative and among his best (Drouin 1987:42–44). Réaumur wrote that John Ray had found only five species of ant in England; Réaumur said (without naming them) that France had all five plus many more species.

Réaumur’s approach of concentrating on conspicuous species did allow him to make some generalizations. There were no known species of solitary ants, like the solitary bee and wasp species (still true when Wheeler commented on this). Some ant species have permanent abodes and other species have only temporary abodes. Even those with permanent abodes abandon it when a drought or excessive rain makes it unsuitable. Some species build formicaries (ant hills) with little pieces of dead wood, others live in hollow trees, others burrow tunnels in the ground, and still others hide their formicary under rocks or flower pots (Réaumur 1926:135–140). He dismissed as folklore the ancient story of industrious ants storing up grain for the winter, because he had never discovered such stores when he excavated formicaries, and he even ran experiments with enclosed ants that were given grain and nothing else to eat; they starved (Réaumur 1926:147–149). Wheeler (1926:230, note 29) pointed out that Réaumur was correct about ants in northern France that hibernate, but there are species around the Mediterranean Sea that do store grain.

In the country, the trees usually had lines of ants going up and down, and Réaumur found they usually did no harm, for they sought the excretions of aphids and scale insects. However, he discovered that a dark-brown moderate-size species did gnaw the flowers, buds, and young fruit of apricot trees. Sometimes different species, or different colonies of the same species, fight for possession of a tree (pp. 155–156). Ants like honey, and if they find egg cells of solitary bees with honey stored in them, they can force the female to abandon the site. He cited the French translation (1743) of Richard Bradley’s The Gentleman andGardener’s Kalendar on how to destroy ants that become pests: chop up an earthworm on a flat dish, place it near them, and when it is covered with ants they can be killed. Ants kill caterpillars placed on their formicary and sometimes also ones they encounter on elm trees. The best way to clean a skeleton is to bury the animal in a formicary. Several species of spider lay eggs on folded tree leaves, and the mother stays close by to protect them. Réaumur drove away a spider and placed the leaf with eggs on the ground, and in a few hours ants had eaten the eggs (pp. 157–159).


Fig. 7. Réaumur in his later years.

No one before Réaumur had reported on ants mating. Swammerdam had thought that all winged ants were male, but in September 1731 Réaumur saw flying swarms of insects, which he discovered were mating ants, male and female. He saw them, after mating, return to the formicary they had left. He realized that they only needed wings for mating and that they later shed them (Drouin 1987:39–42). However, a question he could not answer was whether ant colonies (Réaumur 1926:177)

…are founded, like those of the wasps, by a single mother, without the aid of any worker, or whether they are founded by one or several females that are accompanied by several workers for the purpose of taking charge of operations.

Wheeler (1926:247, note 71) said both types of colony formation occur among different ant species. On 10 June 1720, Réaumur found a formicary that at night had all entrances except a small one stopped up; the others were opened in the morning (Réaumur 1926:213). He discovered that larvae and nymphs can only be found in formicaries during warm months, and that they are located more or less deeply within them according to the hour of day and the weather, and that workers stay busy moving them about. If the formicary is disturbed, workers quickly carry them to safety. Some species do not spin cocoons, but many do, and a larva completes a cocoon in about 29 hours. It soon metamorphoses and remains dormant one or two days before shedding its skin to become an adult. Formicaries normally increase in population, because ants are produced more rapidly than they die. This causes a constant enlargement of the formicary as long as it is practicable, but after that, a swarm probably leaves to make a new formicary. One can distinguish between a migrating colony and normal ant traffic to and fro, because a migrating colony goes in only one direction and carries its larvae and cocoons. Sometimes adults even carry other adults, in which case the pair lock mandibles; generally, larger ones carried smaller ones, and he suspected that the ants being carried were males (Réaumur 1926:189–194).

Réaumur (1926:187–188) cited the remarkable Metamorphosis insectorum Surinamensium (1705, 1980; see Bodenheimer 1928–1929, I:401–407, Rucker and Stearn 1982, Rice 1999:90–119), by the equally remarkable Maria Sibylla Merian (1674–1717), for her gorgeous color illustrations (Wettengl 1997), and account of tropical ants occasionally swarming into houses. People had learned to tolerate them, because they cleaned out the cockroaches and other insects and spiders before leaving. She also reported that leaf-cutting ants sometimes defoliate a tree. Some of them climb up and cut the leaves from the branches, and when they fall to the ground, others take them to the formicary, apparently as food for larvae. Later, Thomas Belt (1874:71–84) reported that the leaves were used within the formicary as compost on which to grow fungal food for both adults and larvae (Wheeler 1926:250–251, note 90).

Réaumur’s natural history of insects was widely read and appreciated, and it inspired other naturalists to make similar studies. He carried on an extensive correspondence with some of them, and many of those letters are published. These are the most notable examples. Pierre Lyonet read Réaumur’s work and began his own investigations in 1736 on the anatomy of insects (Miall 1912:291–293, Van Seters 1962, Pierson 1973). In 1737 Charles Bonnet read Réaumur’s work and began a correspondence that resulted in his studies on parthenogenesis in aphids and other subjects (Miall 1912:284–291, Bodenheimer 1928–1929, I:476–486, Savioz 1940, Pilet 1970, Dawson 1987). In 1739 Abraham Trembley read Réaumur’s work; he began his famous investigations on hydra in June 1740 and reported his findings to Réaumur in October (Miall 1912:279–284, Trembley 1943, Baker 1952, 1976, de Beer 1960, Dawson 1987). Jacques François Artur, a physician in the French colony of Cayenne (French Guiana), began corresponding with Réaumur in 1741 and sent many observations that Réaumur used in his Memoires (Chaïa 1968). Charles de Geer was elected to the Swedish Academy of Sciences at age 19 in 1739, and he initiated his correspondence with Réaumur in 1744 (Landin 1972). De Geer so admired Réaumur that he gave his own seven-volume work (1752–1778) the same title as Réaumur’s. August Johann Roesel von Rosenhof was inspired by Maria Sybilla Merian’s book to study insects, but then turned to Réaumur’s work for scientific guidance (Miall 1912:293–303, Bodenheimer 1928–1929, I:361–367, Geus 1975); I am unaware of any correspondence between him and Réaumur.

Literature cited

Baker, J. R. 1952. Abraham Trembley of Geneva: scientist and philosopher, 1710–1784. Edward Arnold, London, UK.

Baker, J. R. 1976. Abraham Trembley (1710–1784). Dictionary of Scientific Biography 13:457–458.

Belt, T. 1874. The naturalist in Nicaragua: a narrative of a residence at the gold mines of Chontales; journeys in the savannahs and forests. Edward Bumpus, London, UK.

Birembaut, A. 1958. La contribution de Réaumur à la thermométrie. Revue d’histoire des sciences et de leurs applications 11:302–329.

Bodenheimer, F. S. 1928–1929. Materialien zur Geschichte der Entomologie bis Linné. Two volumes. Junk, Berlin, Germany.

Bodenheimer, F. S. 1931. Zur Frühgeschichte der Erforschung des Insektenparasitismus. Archiv für die Geschichte der Mathematik und Natur Wissenschaften und der Technik 13:402–416.

Bradley, R. 1721–1724. A general treatise of husbandry and gardening. Three volumes. J. Peele and T. Woodward, London, UK.

Chaïa, J. 1968. Sur une correspondence inedited de Réaumur avec Artur, premier Médecin du Roy à Cayenne. Episteme 2:36–57, 121–138.

Dawson, V. P. 1987. Nature’s enigma: the problem of the polyp in the letters of Bonnet, Trembley, and Réaumur. American Philosophical Society Memoirs 174:ix + 266 pages.

De Beer, G. 1960. The sciences were never at war. [Letters in French with English translations.] Thomas Nelson and Sons, London, UK.

Drouin, J.-M. 1987. Du terrain au laboratoire: Réaumur et l’histoire des fourmis. Aster number 5: Didactique et histoire des sciences. Pages 35–47.

Drouin, J.-M. 1995. René-Antoine Ferchault de Réaumur: les curiosités d’un physician. Pages 197–209 in Adventures scientifiques: savants en Poitou-Charentes du XVIe au XXe siècle. Jean Dhombres, editor. Les editions de l’Actualité, Poitou-Charentes, France.

Egerton, F. N. 1967. Leeuwenhoek as a founder of animal demography. Journal of the History of Biology 1:1–22.

Egerton, F. N. 2005. A history of the ecological sciences, part 16: Robert Hooke and the Royal Society of London. ESA Bulletin 86:93–101.

Egerton, F. N. 2006. A history of the ecological sciences, part 19: Leeuwenhoek’s microscopic natural history. ESA Bulletin 87:47–58.

Evans, M. A., and H. E. Evans. 1970. William Morton Wheeler, biologist. Harvard University Press, Cambridge, Massachusetts, USA.

Geus, A. 1975. August Johann Roesel von Rosenhof (1705–1759). Dictionary of Scientific Biography 11:502–503.

Gough, J. B. 1975. René Antoine Ferchault de Réaumur (1683–1757). Dictionary of Scientific Biography 11:327–335.

Grasse, P.-P. 1962. La vie et l’oeuvre de Réaumur (1683–1757). Preface. [Reprints articles of 1958 in Revue d’histoire des sciences et de leurs applications.] Presses Universitaires de France, Paris, France.

Hooke, R. 1665. Micrographia: or some physiological descriptions of minute bodies Made by magnifying glasses, with observations and inquiries thereupon. Jo. Martyn and Ja. Allestry for the Royal Society of London, London, UK.

Howard, L. O., H. G. Dyar, and F. O. Knab. 1912. The mosquitoes of North and Central America and the West Indies. Volume I: a general consideration of Mosquitoes, their habits, and their relations to the human species. Carnegie Institution of Washington, Washington, D.C., USA.

Huxley, L. 1900. Life and letters of Thomas Henry Huxley. Two volumes. Macmillan, London, UK.

Landin, B.-O. 1972. Charles de Geer (1720–1778). Dictionary of Scientific Biography V:328–329.

Linnaeus, C. 1758. Systema naturae per regna tria naturae. Edition 10, Volume 1. Laurentii Salvii, Holmiae, Sweden.

Merian, M. S. 1980. Metamorphosis insectorum Surinamensium.

Miall, L. C. 1912. The early naturalists: their lives and work. Macmillan, London, UK.

Middleton, W. E. K. 1966. A history of the thermometer and its use in meteorology. Johns Hopkins Press, Baltimore, Maryland, USA.

Müller, G. H., and M. R. Wheeler. 1981. Misinterpretations of Réaumur’s description of small flies. Centaurus 25:319–327.

Pierson, S. 1973. Pierre Lyonet (1706–1789). Dictionary of Scientific Biography 8:579– 580.

Pilet, P. E. 1970. Charles Bonnet (1720–1793). Dictionary of Scientific Biography 2:286–287.

Réaumur, R.-A. F. de. 1734–1742. Mémoires pour servir à l’histoire des insectes. Six volumes. Académie Royale des Sciences, Paris, France.

Réaumur, R.-A. F. de. 1749. Art de faire éclorre et d’élever en tout saison des oiseaux Domestiques de toutes espèces. Two volumes. Imprimerie royale, Paris, France.

Réaumur, R.-A. F. de. 1750. The art of hatching and bringing up domestic fowls. London, UK.

Réaumur, R.-A. F. de. 1800. Short history of bees I. The natural history of bees . . . Printed for Vernor and Hood in the Poultry, by J. Cundee, London, UK.

Réaumur, R.-A. F. de. 1926. The natural history of ants, from an unpublished manuscript. W. M. Wheeler, editor and translator. [Includes French text.] Knopf, New York, New York, USA. Reprinted 1977. Arno Press, New York, New York, USA.

Réaumur, R.-A. F. de. 1939. Morceaux choisis. Jean Torlais, editor. Gallimard, Paris, France.

Réaumur, R.-A. F. de. 1955. Histoire des scarabées. M. Caullery, introduction. Volume 11 of Encyclopédie Entomologique. Paul Lechevalier, Paris, France.

Réaumur, R.-A. F. de. 1956. Memoirs on steel and iron. A. G. Sisco, translator. C. S. Smith, introduction and notes. University of Chicago Press, Chicago, Illinois, USA.

Rice, T. 1999. Voyages of discovery: three centuries of natural history exploration. Natural History Museum, London, UK.

Rostand, J. 1962a. Réaumur et les premiers essays de lethargie artificielle. Revue d’histoire des sciences et de leurs applications 15:69–71.

Rostand, J. 1962b. Réaumur et la résistance des insects à la congélation. Revue d’histoire des sciences et de leurs applications 15:71–72.

Rucker, E., and W. T. Stearn. 1982. Maria Sibylla Merian in Surinam: commentary to the facsimile edition of Metamorphosis insectorum Surinamensium (Amsterdam 1705). Pion, London, UK.

Savioz, R. 1940. Un maître et un disciple au XVIIIe siècle (Charles Bonnet et Réaumur). Thalès 4:100–112.

Taton, R. 1958. Réaumur mathematician. Revue d’histoire des sciences et de leurs applications 11:130–133.

Théodoridès, J. 1959a. Réaumur (1683–1757) et les insects sociaux. Janus 48:62–76.

Théodoridès, J. 1959b. Réaumur et la parasitologie. Biologie Médicale 48, numéro hors série:iii–xxiv.

Théodoridès, J. 1968. Historique des connaissances scientifiques sur l’abeille. Pages 1–34 in Traité de biologie de l’abeille. R. Chauvin, editor. Masson, Paris, France.

Torlais, J. 1961. Un esprit encyclopédique en dehors de “L’encyclopédie”: Réaumur. Blachard, Paris, France.

Trembley, M., editor. 1943. Correspondance inedited entre Réaumur et Abraham Trembley. Georg, Geneva, Switzerland.

Tuxen, S. L. 1973. Entomology systematizes and describes: 1700–1815. Pages 95–118 in R. F. Smith, T. E. Mittler and C. N. Smith, editors. History of entomology. Annual Reviews, Palo Alto, California, USA.

Vallot, J. N. 1802. Concordance systématique, servant de table des matières à l’ouvrage de Réaumur intitulé Mémoires… Paris, France.

Van Seters, W. H. 1962. Pierre Lyonet, 1706–1789: sa vie, ses collections de coquillages et de tableaux ses recherches entomologiques. Martinus Nijhoff, The Hague, The Netherlands.

Wettengl, K., editor. 1997. Maria Sibylla Merian, 1647–1717: Künstlerin und Naturforscherin. Gerd Hatje, Frankfurt am Main, Germany.

Wheeler, W. M. 1926. Introduction, annotations and bibliography. In R.-A.F.de Réaumur 1926. Knopf, New York, New York, USA.

Acknowledgments

For their assistance I thank Bénédict Bilodeau, Centre Alexandre Koyré, Paris; Jean-Marc Drouin, Muséum National d’Histoire Naturelle, Paris; and Anne-Marie Drouin-Hans, Université de Bourgogne.

Frank N. Egerton
Department of History
University of Wisconsin-Parkside
Kenosha, WI 53141

E-mail: frank.egerton@uwp.edu

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Commentary

SEEDS of a New Millenium

Though I do not believe that a plant will spring up where no seed has been, I have great faith in a seed. Convince me that you have a seed there, and I am prepared to expect wonders.

—Henry David Thoreau

Ideas that each of us nurtured in private seemed to blossom when we shared them at a recent leadership workshop held in Phoenix, Arizona by the Strategies for Ecology, Education, Development and Sustainability (SEEDS) Program. We are 12 young scientists, representing three cohorts of the Ecological Society of America’s SEEDS Program, who have been awarded Undergraduate Research Fellowships in 2004–2007. We were chosen from America’s minority and immigrant populations. Some of us represent Native Americans, including Hawai'ians and the Lakota, Mandan, Hidatsa, and Arikara Nations. Some of our parents or we ourselves come from other countries, including Mexico, Puerto Rico, Honduras, Peru, Africa, and China. More than a nod to political correctness and affirmative action, we embody the diversity that ESA seeks, a diversity that is necessary for the advancement of science and society. Today, we share our thoughts with those who set the agenda for the field we are now part of. We believe it is imperative to expand the focus of ecology and understand the importance of hard science. We are global citizens who feel a deep obligation toward serving our communities. As emerging ecologists, the inheritors of ESA, we wish to express our views and concerns regarding the future of this field.

Currently African Americans, Hispanics, and Native Americans make up nearly 25% of the national population, yet they receive only 13% of all United States science and engineering bachelor’s degrees, and 7% of all science doctoral degrees (Mojica Rey 2001). Similarly, African Americans, Hispanics, and Native Americans compose <5% of ESA’s total membership (ESA 2005). ESA realized the need to increase the presence of underrepresented ethnicities in the field of ecological research by creating the SEEDS Program. The mission of SEEDS is to promote opportunities, to spark and nurture the interest of underrepresented students in the science of ecology. SEEDS values cultural diversity in ecology by viewing it as a crucial tool to expand global environmental awareness, advance science, and increase community development.

The SEEDS Program has given minority students the chance to learn and apply rigorous Western Science through practical hands-on use of the scientific method, without being forced to deny or forsake the wisdom that is inherent and embedded in their cultures. We must remain true to both science and our cultures while being careful to distinguish the similarities and differences in these two realms. Cultural wisdom goes beyond the traditional science methodology by including not only the how or why, but also purpose of understanding the natural world. The SEEDS program recognizes our unique perspectives and constantly encourages us with support and opportunities.

SEEDS has given us the chance to conduct independent ecological research projects through the SEEDS Undergraduate Research Fellowship. Through experiencing what graduate students and career ecologists do, we are beginning to understand and visualize what it takes to pursue an ecological profession. The teachings that we receive from this program and our mentors are priceless. The support of ESA and SEEDS has maximized our learning potential by also enabling us to participate in other SEEDS activities: taking ecological field trips, attending and presenting at the ESA Annual Meetings, networking with other ecologists, and often participating in our local campus SEEDS Chapters.

All of us were introduced to SEEDS differently, either through faculty members, mentors, and/or SEEDS Chapters. Prior to SEEDS many of us did not know what the field of ecology entailed. We all possessed a sincere interest in environmental science and nature, but we did not know where our passions lay or how to pursue them. SEEDS has shown us the many different realms of ecology, allowing us to find an ecological discipline that is close to our personal interests. Our interests encompass a variety of areas: biogeochemistry, urban ecology, rangeland ecology, tropical ecology, Northern Plains ecology, agro-forestry, marine ecology, and population ecology. SEEDS students, with our diverse cultural, geographic, and disciplinary backgrounds, are a vivid message to the ecological community that diversity can greatly strengthen the profession.

SEEDS has enhanced multilingual and multicultural relations by uniting diverse students who are deeply committed to ecology, equity, and culture. We have made lifelong friendships, and support each other, regardless of how many miles lie between us. SEEDS is a family that makes us not only want to become ESA members, but also active participants in shaping the future of the organization. The chance to meet and collaborate with students and scholars from different ethnic backgrounds has given us a positive and optimistic outlook on science. We believe that the future of ecological research lies in collaboration across boundary lines: geographical and intellectual. Borrowing tools from other disciplines and incorporating different methodological and theoretical perspectives will make ecology prepared for future challenges. SEEDS has opened our eyes and minds to a whole new world of possibilities—possibilities we would never imagined had we not found SEEDS, or maybe if SEEDS hadn’t found us.

Studying ecology has helped us understand the world’s complexity. However, the lack of pristine ecosystems has affected our paradigm in research, leading us to focus on restoration, preservation, and urban ecosystems. To address the environmental problems we see in the world and in our communities, we have a broad view on research questions, perspectives on research, and approaches to solutions, such as the combination of science and traditional ecological knowledge. We wish to conduct scientific research that is credible in the scientific community, but that can also be applied in real-world settings. As scientists we have the knowledge of how systems may function, and we believe that with knowledge comes the responsibility to act. Within the scientific community, professionals have collaborated and are sharing information with each other, but now we must take the next step forward by ensuring it is passed on to society and applied for the benefit of everyone.

As emerging young scientists of the new millennium we understand and admire the goals of ESA. Those related to diversifying and communicating science include:

  • Improve ecological science and its application by increasing the diversity of ecologists, including the representation of cultural, ethnic, gender, intellectual, and disciplinary perspectives, and persons with disabilities .
  • Improve communication and enhance education and public awareness.
  • Increase resources and inform policy .

In order to fulfill these goals, ESA members and all ecologists should become more involved in increasing diversity in ecology, educating communities, and informing policy makers.

During our undergraduate careers, we already are fulfilling ESA’s goals and strengthening the science of ecology by asking broad ecological questions, doing ecological research in different international locations, and actively using our ecological knowledge to influence society and the public. For example, a fellow at the University of Texas El Paso (UTEP) directs, designs, and participates in restoration and outreach projects that expose grade school st