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American Fisheries Society

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L EVol. 16 No.rMay, 1997

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. .JAMESD.WILLIAMS. NATIONAL BIOLOGICAL SURVEY

" 7920NW71STSTREET--. '---, .- __606

Introduced Fish.i

Section

IFS WEB-SITE UP AND RUNNINGhttp"w~afsifs. vt.edu

INSIDE

Presidents Comer. . . . .From the Editor. . . . .Nonindigenous Aquatic and SelectedTerrestrial Species of Fl. . . . . . 2Introduced Fish Topics from The Fish-

EcologyListServer. . . . . 3EuropeanGreenCrabsin OR.. . . . . 3Non-Native Fish Impact Colorado

River Natives. . . . .Hot Off The Press. . . . .Meritorious Service Award. . . . .Panel Presentation on Aquatic. NusianceSpecies. . . . .Program for the IFS-Sponsored

Symposium at the AFSAnnual Meeting. . . . .

Report Details "Least Wanted"Exotic Species. . . ..

"Managing Aquatic Vegetation withGrass Carp: A Guide for Water

Resource Managers,"order form. . . . .

Resource Managers Petition VicePresident Gore on ExoticSpecies. . . . .

Zebra Mussel Workshops Held inPortland. . . . .

Scientists and Engineers to TestBallast Filter. . . . .

Exotic Crayfish in Wisconsinand Michigan. . . . .

1996-1997 Officers. . . . .Looking for Oscar. . . . .Zebra Mussel Costs. . . . .Editors Note. . . . .

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Presidents Cornerby Eric Hallerman.

334

Greetings, fellow IPS members.At the mid-point of the year, it's time totake stock of what's been accomplishedand what lies ahead in the business of the

Section. I'm pleased to report on a num-ber of Section-sponsored activities, somecompleted, some ongoing, and some onwhich I seek your input.

Election results Elections forthe vacant office of President-elect were

held in December. Dr. Anna Toline (UtahState University) will take the reins asPresident at our business meeting inMonterey in August. Thank you, Annaand Charles Brown (USDA-APHIS) forstanding for election. In other election-related results, voters overwhelmingly ap-proved the donation of $100 to supportthe Skinner Award, which supports thetravel of students to the AFS annual meet-

ing. Regarding the possibility of a duesincrease for international members to re-

flect the extra costs of mailing the news-letter, the response involved few votersand was mixed; hence, I am reluctant torecommend changing the existing duesstructure.

Call for Nominations This summer, wewill hold elections for President-Elect

and Secretary-Treasurer. The sectionNominating Committee consists of cur-rent officers and the Past-President. We

ask your suggestions for prospectivenominees for these offices. Contact anyof us.

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Newsletter Editor:'John R. Cassani

Lee County HyacinthControl District

P.O.Box 60005, Fort Myers,FL 33906 USA

E-mail:

jcassani@peganet.com

Grass carp manual out TheSection-sponsored book, "ManagingAquatic Vegetation with Grass Carp: A

guide for Water Resource Managers,"edited by John Cassani, has just beenpublished. The grass carp manual shouldproveuseful to arange of aquaticsprofes-sionals. A listing of its contents and anorder form appear on page 5 of this news-letter. I vouch that it's a great buy at $18.On behalf of the Section, I express thanksto theAFS Publications Endowment for agrant that supported publication of themanual. This grant brought the publica-tion to fruitionand kept low thecostofthefinished product.

IFS Web-site up The Section'sWorId Wide Web homepage is now upandrunning, and can be accessed at http:!.!www.afsifs.vt.edu. It will inform read-ers of Section goals and activities, pro-videaccess tonews items regardingintro-ducedaquaticspeciesandprovidehotlinksto related Web-sites. Check it out. Feelfree to tell me of other sites to link to andto pass along news items of general inter-est.

Section-sponsored syposiumFormer Section President Denny Lassuyis organizing a symposium, "Bettas toBiodiversity: The role of the aquarium infish conservation," for the AFS annualmeeting in Monterey. Presentations willfocus on the significance to conservationof home aquaria,the aquarium industry,and public aquaria. This sort of a sympo-siumis particularlyappropriate giventhatthe AFS annual meeting is to be held inMonterey, California, home to a majormarine aquarium. A listing of speakersand topics is provided on page 4 of thisnewsletter.

Governing Board news TheGoverning Board of AFS includes the

Page 1

Introduced Fish Section I IFS

Continued from page 2

Biological Control Agents

of Aquatic NonindigenousPlant Species

Section 2. Nonindigenous Non-

aquatic Insects of SpecialInterest

Chapter 6. Nonindigenous Fishes in FreshwaterSystemsSection I International Trade of

Nomndigenous FishSection 2. National Trade of Non- .

indigenous FishesSection 3 Potential Effects of Non-

indigenous Fishes

Section 4. Tropical Fish Industry inFlorida

Section 5 Established Nonin-

digenous Fish Species inFlorida

Cyprinidae - Carps andMinnowsCobitidae - LoachesCharacidae - Characins

Clariidae - LabyrinthCatfishes

Loricariidae - Sucker-mouth Catfishes

Poeciliidae - LivebearersCichlidae - Cichlids

Anabantidae

Ch(!pter 7 Nonindigenous Amphibians and Reptiles

Chapter 8. Nonindigenous Aquatic BirdsSection 1 Importation of N onin-

digenous BirdsSection 2 Pathways of IntroductionSection 3 Nonindigenous Non-

aquatic Birds of SpecialInterest

Chapter 9 Nonindigenous Aquatic Mammals inFreshwater Systems

Chapter 10 Nonindigenous NonaquaticMammals of High Visibility

Cha~' Introductions and Survival of Non-indigenous Species in the MarineEnvironment

Section 1 Nonindigenous Diseases inthe Marine Environment

Section 2 Nonindigenous EuryhalinePlants

Section 3 Nonindigenous EuryhalineInvertebrates

Section 4 .N onindigenous EuryhalineFishes

Chapter 12 Regulations for the Import ofFishes, Wildlife, Plants and InsectsSection 1. Nuisance-Plant Regula-

tions

Section 2 Regulations for the Con-trol of Fishes and Wildlife

Section 3 Regulations for the Use ofInsects as 'Biological Con-trol Agents

Conclusions..Acknowledgments

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Tables

FiguresCited Literature

INTRODUCED FISH. TO}>ICS FROM

THE FISH-ECOLOGYLIST SERVER

"We' are involved in a research

programme looking at the invasion offoreign marine species in New Zealand'sestuaries and harbo~rs, and on the opencoast. At present we are concentrating onthe introduction of invaders via ship'sballast water and will be extending thiswork to other transit ways such as thebottom of ship's hulls: I am very inter-ested in predictive techniques for invad-ing species generally, and would like tolook at the possibility of applying demo-graphic models such as Lefkovitch matri-ces to the marine situation. I would like to

exchange ideas with people involved inpredicting invasions and the spread ofsuccessful invasions."

RegardsMike TaylorCawthron Institute'Private Bag 2NelsonNew ZealandPh: 64-03-5482319

e-mail michael@environment.cawthron.org.nz

EUROPEAN

GREEN CRABS

IN OREGON

In late March 1997, the first

European green crabs were discoverednear the Coos Bay, OR., estuary. Thisspecies has steadily migrated no~wardfrom San Francisco Bay, where it wasfirst detected in 1989. Residents feardamage to oysters, clams, mussels, an~~

nativ.efrap species, - " .

. Associated Press

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May, 1997 ~/'?f..J q

NON-NATIVEFISHIMPACT COLORADO

RIVER NATIVES

San Juan River. On Feb. 5,1997, environmental consultants re-ported to the San Juan Water Commis-sion that endangered Colorado Squaw-fish and razorback sucker might neverrecover in theSan Juan River,NM,due topredation on their young by non-nativefish (browntrout and catfish)andbecausethe river may be unsuitable for spawning.Regulation of water flowto benefit theseendangeredspecieshad beencontentious.

Associated Press

HOTOf, iHi ,ii~~t

Predation by Introduced Fishes onEndangered Humpback Chub andOther Native Species in the Little

Colorado River, Arizona

Paul C. MarshCenter for Environmental Studies andDepartment of Zoology, Arizona State

UniversityTempe, Arizona 85287-3211, USA

Michael E. Douglas

Department of Zoology and Museum,Arizona State University

Tempe, Arizona 85287-1501, USA

Abstract -- Fishes in the Little ColoradoRiverin the Grand Canyon, Arizona, were sampledmonthly from July 1991 to June 1995 as partof a studyof the ecology of endangered hump-back chub Gila cypha. Diets of five intro-duced predatory fish species were examined.Stomach contents varied among species andwere low in diversity and dominated by algae(primarily Cladophora), aquatic insects, andfishes. Humpback chub plus other nativespecies were a significant component of thediet (13.7% frequency of occurrence among219 of 408 stomachs that contained food).Predation mortality from'introduced fishes'may significantly affect the native species bydepleting numbers and reducing recruitment.

- Transactions of The American

Fisheries Society 1~6 (1997):343-346!~

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