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Proceedings of the Fourteenth Annual Symposium on Sea Turtle Biology and Conservation

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Proceedings of the Fourteenth Annual Symposium on Sea Turtle Biology and Conservation PROCEEDINGS OF THE FOURTEENTH ANNUAL SYMPOSIUM ON SEA TURTLE BIOLOGY AND CONSERVATION 1 - fii March 1994 Hilton Head, South Carolina Compilers: Karen A. Bjorndal Alian B. Bolten Dale A. Johnson Peter J. Eliazar U.S. Department of Commerce National Oceanographic and Atmospheric Administration National Malrine Fisheries Service Southeast Fisheries Science Center 75 Virglinia Beach Drive Miarni, FL 33 149 NOAA Technical Memorandum NMFS-SEFSC-351 PROCEEDINGS OF THE FOURTEENTH ANNUAL SYMPOSIUM ON SEA TURTLE BIOLOGY AND CONSERVA,TION 1 - 5 March 1994 Hilton Head, South Carolina Compilers: Karen A. Bjorndal Alan B. Bolten IDale A. Johnson Peter J. Eliazar August 1994 U.S. DEPA.RTMENT OF COMMERCE Ronalt~lH. Brown, Secretary NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION D. James Baker, Administrator NATIONAL MARINE FISHERIES SERVICE Rolland A. Schmitten, Assistant Administrator for Fisheries The Technical Memorandum Series is used ,lor documentation and timely communication of preliminairy results, interim reports, or special-purpose information. Although the mennoranda are not subject 'to complete formal review, editorial control, or detailed editing, they are expected to reflect sound professional work. NOTICE The National Marine Fisheries Service (NIMFS) does not approve, recommend, or endorse any proprietary product or proprietary material in this publication. No reference shall be made to NMFS, nor to this publication furnished by NMFS, in any advertising or sales promotion which would indicate or imlply that NMFS approves, recommends, or endorses any product or proprietary material mentioned herein, or which has as its purpose an intent to cause directly or indirectly the advertised product to be used or purchased because of this NMF!i; publication. This lpublication should be cited as follows: Bjorndal, K.A., A.B. Bolten, D.A. Johnson, and P.J. Eliazar (Compilers). 1994. Proceedings of the Fourteenth Annual Symposium on Sea Turtle Biology and Conservation. NOAA Technical Memorandurn NMFS-SEFSC-35 1, 323 pp. Cover Artwork: Dawn Russell 1994 C:opies may be obtained by writing: National Marine Fisheries Service Miami Laboratory Sea Turtle Program 75 Virginia Beach Drive Miam~i,FL 33149 National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 PREFACE The Fourteenth Annual Symposium on Sea Turtle Biology and Conservation was hosted by the Marine Turtle Program of the Florida Department of Environmental Protection from1 1 - 5 March 1994. The Symposium brought together 547 participants representing 21 nations. Elighty-five papers and 56 posters were presented on topics which covered all aspects of sea turtle research and conservation efforts. A meeting of the IUCNIMarine Turtle Specialist Group was convened following the close of the Symposium. Many individuals worked very hard to make the Fourteenth Annual Symposium a great success. Ed Drane and Sally Murphy graciously assisted with all aspects of planning and logistics. Many people served as chairpersons for committees and1 were, in turn, assisted by othiers on their committees. Committee leaders included: Mailings, Sally Murphy and Joan Logothetis; Program, Allen Foley; International Travel, Karen Eckert; Logo Desilgn Contest, Erik Martin; T-shirts and Mementos, Erik Martin; Registration, Thelma Richardson; Student Awards, Ken Dodd; Silent and Called Auction, Nelia Coyle; Audio and Visual Aids, Jamie Serino and Allen Foley; Food and Beverage, Ed Drane; Poster Room, Ron Mezich; Time and Place, Jeanette Wyneken; Nominations, Lew Ehrhart; Trivia Quiz, Blair Witherington; Symposium Proceedings, Karen Bjorndal and Alan Bolten; Symposium Photographs, Ray Carthy. The winning logo for the Symposiu~mwas designed by Dawn Russell. Rod Mast volunteered his talents again as auctioneer to help raise funds for international travel grants. Chris Koeppel helped in innumerable ways during the Symposium and I am very grateful for his cheerful assistance. Coffee breaks were graciously sponsored by Okea~nosOcean Research Foundation, The Museum of Hilton Head Island, Perran Ross, Geomar Environmental Consultants, and the Center for Marine Conservation. Thanks also to the U.S. Fish and Wildlife Service and the National Marine Fisheries Service for providing mailing and xeroxing services, respectively. The Center for Marine Conservation donated prizes for the trivia quiz winners. Ed Drane did a superb job of handling all of the finances involved with meeting. Finally, I would like to thank everyone who took part in the Symposium for sharing their talents, knowledge, and ideas to further sea turtle conservation and recovery efforts around the world. Barbara Schroeder 1994 Symposium Coordinator and President We would like to thank the session chairs and authors whose efforts allowed us to complete the compilation of these proceedings in a timely fashion. We especially want to thank Wayne Witzell, Chairman of the Publications Committee, for his guidance, Barbara Schroeder and Blair Witherington for sharing their experiences from the last p~roceedings,and Thelma Richardson for providing the list of participants and mailing labels. Publication and distribution costs are supported by the Southeast Fisheries Science Center, National Marine Fikheries Service, through the efforts of Nancy Thompson and Wayne Witzell. Karen A. Bjorndal, Alan B. Bolten, Dale A. Johnson, and Peter J. Eliazar 1994 Symposium Proceedings Compilers CONTENTS PART I: ORAL PRESENTATIONS 2 FIBROPAPILLOMAS IN THE HAWAIIAN GREEN TURTLE: RESEARCH UPDATE: A. Alonzo Aguirre, George H. Balazs,, E3. Zirnrnerrnan, and Terry R. Spraker 3 VISITATION AND PREDATIORI OF THE OLIVE RIDLEY SEA TURTLE, LEPIDOCHELYS OLIVACEA,, AT NEST SITES IN OSTIONAL, COSTA RlCA Michael L. April1 7 HATCHING RATES OF OLIVE RIDLEYS IN A MANAGED) ARRIBADA BEACH, OSTIONAL, COSTA RlCA Marta Aratiz-Alrnengor and Claudett~e1.. Mo 9 OVERWINTERING BEHAVIOR AlND MOVEMENT OF IMMATURE GREEN SEA TURTLES IN SOUTH TEXAS VVATERS Stacie A. Arms, Andre M. Landry, Jr., Leonard Kenyon, and Karen St. John 10 ECOLOGY AND CULTURAL. SIGNIFICANCE OF SEA TURTLES AT PUNALU'U, HAWAII George H. Balazs, Walter C. Duclley, Leon E. Hallacher, John P. Coney, and Shawn K. Koga 14 OBSERVATION ON THE 1NC:IDENCE OF FIVE EXTERNAL L.ESION TYPES IN 506 OLIVE RIDLEY LEPIDOCHEiL YS OLIVACEA (ESCHSCHOL'TZ) NESTERS IN THEE OSTIONAL WILDLIFE REFUIGE, GUANACASTE, COSTA lRlCA Jorge Ballestero and Alvaro Segura 17 POPULATION STRUCTURE OF HAWKSBILL ROOKERIES IN THE CARlBBEAIIll AND WESTERN ATLANTIC Anna L. Bass 18 USE OF LENGTH-FREQUEIUCY ANALYSES FOR ESTIMATION OF GROWTH PARAMETERS FOR A GREEN TURTLE POPULATION Karen A. Bjorndal and Alan B. Bolter1 19 BIOLOGY OF PELAGIC-STAGE LOGGERHEADS IN THE ATLANTIC Alan B. Bolten, Karen A. Bjorndal, and Helen R. Martins 21 EVALUATION OF ACCURACY AND PRECISION OF A SONIC TELEMETRY SYSTEM IN CORE SOUND,. NORTH CAROLINA Joanne Braun and Sheryan P. Epperlly 22 STUDYING PIGS FOR THE CONSERVATION OF SEA TURTLES: THE IMPORTANCE OF KNOWlNlG YOUR ENEMIES I. Lehr Brisbin, Jr. THE EFFECTS OF FLASH PIHO'TCIGRAPHY ON NESTING BEHAVIOR OF GREEN TURTLES (CHELONIA MYLIAS) ,AT TORTUGUERO, COSTA RlCA Cathi L. Campbell LOGGERHEAD NEST MOIRPHOLOGY: EFFECTS OF FEMALE BODY SIZE, CLUTCH SlZE AND NESTING MEDIUM ON NEST CHAMBER SlZE Raymond R. Carthy SEX RATIO OF IMMATURIE KEMP'S RIDLEY SEA TURTLES IN THlE NORTHWESTERN GULF OF MlEXlCO Michael S. Coyne, Andre M. Lar~dry,Jr., Rhonda Patterson, and David Owens DEVELOPMENT OF A NONI-INVASIVE SEXING TECHNIQUE FOR HATCHLING LOGGERHEAD TURTLES (CARETTA CARETTA) D. Andrew Crain, Timothy S. Gro:;s, Alan Bolten, Karen Bjorndal, Ray Carthy, and Louis Guillette, Jr. SEA TURTLE CONSERVATION AND THE ENDANGERED SPECIES ACT: DOES GOOD BIOLOGY EQUAL GOOD CONSERVATION? Deborah T. Crouse THE EFFECT OF TURTLE-EXCL-UDER DEVICES ON LOGGIZRHEAD SEA TURTLIE STRANDINGS IN SOUTH CARlOLlNA Larry B. Crowder, Sally R. Hopkins-Iblurphy, and J. Andrew Royle TRADE OF HAWKSBILL CARAPACES IN SANTO DOMINGO, DOMINICAN REPUBLIC Tammy G. Dominguez and Amaury A. Villalba GENETIC POPULATION SUIRVEY OF LEATHERBACKS BASED ON mtDNA Peter Dutton, Scott Davis, and David Owens THE EFFECT OF ABIOTIC FACTORS ON THE POSITION OF LOGGERHEAD TURTLES (CARETTA CARETTA) IN THE WATER COLUMN AT CAPlE CANAVERAL, FLORIDA Mark D. Eberle, Edward A. Standora, Jason M. Edbauer, Thomas S. Ryder, Kristina L. Williams, Stephen J. Morreale, and Alan H. Bolten MITOCHONDRIAL DNA STRUCTURE OF ATLANTIC GREEN TURTLE NESTING GROUNDS Sandra E. Encalada MATING SYSTEMS AND MALE CONTRIBUTION TO GENE FLOW IN MARlNlE TURTLES: PRELIMINARY EVIDENCE FROM MICROSATEI-LITE DNA ANALYSllS Nancy N. FitzSimmons, Craig Moriti!, Colin J. Limpus, and Steve S. Moore THE NESTING ECOLOGY OF LOGGERHEAD TURTLES (CARETTA CARETTAI) IN THE TEN THOUSAND ISILANDS (FLORIDA) AND IMPLICATIONS FOIR CONSERVATION Allen M. Foley GROWTH AND ESTIMATE[) AGE AT MATURITY OF QUEENSLANC) LOGGERHEADS Nat B. Frazer, Colin J. Limpus, and .Judith L. Greene BONE AND MUSCLE BIOPSY TECHNIQUES - FIELD PROCEDURES FOR OBTAINING TISSUE SAMPLES FROM LIVE SEA TURTLES Robert H. George ACUTE CAPTIVITY STRESS IN THE LOGGERHEAD SEA TURTLE (CARETTAI CARETTA) Lisa F. Gregory THE SEA TURTLE NESTING BEACHES IN THE PENINSU1.A DE PARIA, SUCRE STATE, VENEZUELA Hedelvy J. Guada, Pedro Vernet P., \Jncente J. Vera, Agustin Quijada, Alberto J. Martinez, and Victor Reinoza ANALYSIS OF A FISHERIES MODEL FOR HAWKSBILL HARVEST IN CUBA Selina S. Heppell and Larry B. Crowder GREEN TURTLE FIBROPAPILLOMATOSIS: TRANSMISSION STUDY UPDATE Lawrence H. Herbst, Elliott R. Jacobson,
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