Volume 68 July 2001 Number 2 Formerly the Journal of the Helminthological Society of Washington A semiannual journal of research devoted to Helminthology and all branches of Parasitology CONTENTS CRISCIONE, C. D., AND W. F. FONT. Development and Specificity of Oochoristica javaensis (Eucestoda: Cyclophyllidea: Anoplocephalidae: Linstowiinae) . 149 CRISCIONE, C. D., AND W. F. FONT. Artifactual and Natural Variation of Oochoristica javaensis: Statistical Evaluation of In Situ Fixation 156 BOLEK, M. G., AND J. R. COGGTNS. Seasonal Occurrence and Community Structure of Helminth Parasites in Green Frogs, Rana damitans melanota, from Southeastern Wisconsin, U. S.A „ 164 FORRESTER, D. J., G. W. FOSTER, AND J. E. THUL. Blood Parasites of the Ring-Necked Duck (Aythya collaris) on Its Wintering Range in Florida, U.S.A 173 CARKENO, R. A., L. A. DURDEN, D. R. BROOKS, A. ABRAMS, AND E. P. HOBERG. Parelaphostrongylus tennis (Nematoda: Protostrongylidae) and Other Parasites of White-Tailed Deer (Odocoileus virginianus) in Costa Rica 177 JOY, J. E., AND R. B. TUCKER. Cepedietta michiganensis (Protozoa) and Batracholan- dros magnavulvaris (Nematoda) from Plethodontid Salamanders in West Virginia, U.S.A x 185 AGUIRRE-MACEDO, M. L., T. SCHOLZ, D. GoNzALEZ-SoLfs, V. M. VIDAL-MARTINEZ, P. POSEL, G. ARJANO-TORRES, S. DUMAILO, AND E. SIU-ESTRADA. Some Adult Endohelminths Parasitizing Freshwater Fishes from the Atlantic Drainages of Nicaragua .. 190 SALGADO-MALDONADO, G., G. CABANAS-CARRANZA, J. M. CASPETA-MANDUJANO, E. SOTO-GALERA, E. MAYEN-PENA, D. BRAILOVSKY, AND R. BAEZ-VALE. Helminth Parasites of Freshwater Fishes of the Balsas River Drainage Basin of Southwestern Mexico 196 SALGADO-MALDONADO, G., G. CABANAS-CARRANZA, E. SOTO-GALERA, J. M. CASPETA- MANDUJANO, R. G. MORENO-NAVARRETE, P. SANCHEZ-NAVA, AND R. AGUILAR- AGUILAR. A Checklist of Helminth Parasites of Freshwater Fishes from the Lerma- Santiago River Basin, Mexico . 204 CURRAN, S. S., R. M. OVERSTREET, T. T. DANG, AND T. L. NGUYEN. Singhiatrema viet- namensis sp. n. (Digenea: Ommatobrephidae) and Szidatia taiwanensis (Fischthal and Kuntz, 1975) comb. n. (Digenea: Cyathocotylidae) from Colubrid Snakes in Vietnam . ; 219 KUZMIN, Y., V V TKACH, AND S. D. SNYDER. Rhabdias ambystomae sp. n. (Nematoda: Rhabdiasidae) from the North American Spotted Salamander Ambystoma macula- turn (Amphibia: Ambystomatidae) 228 (Continued on Outside Back Cover) Copyright © 2011, The Helminthological Society of Washington THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON THE SOCIETY meets approximately five times per year for the presentation and discussion of papers in any and all branches of parasitology or related sciences. All interested persons are invited to attend. 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All inquiries concerning subscriptions or back issues and all payments for dues, subscriptions, and back issues should be addressed to: Helminthological Society of Washington, % Allen Press, Inc., 1041 New Hampshire St., Lawrence, Kansas 66044, U.S.A. EDITORIAL BOARD WILLIS A. REID, JR. AND JANET W. REID, EDITORS 2001 2002 2003 WALTER A BOEGER DANIEL R. BROOKS ROY C. ANDERSON WILLIAM F. FONT HIDEO HASEGAWA DIANE P. BARTON DONALD FORRESTER SHERMAN S. HENDRIX LYNN K. CARTA J. RALPH LICHTENFELS JAMES E. JOY RALPH P. ECKERLIN JOHN S. MACKIEWICZ DAVID MARCOGLIESE FUAD M. NAHHAS BRENT NICKOL DANTE S. ZARLENGA DANNY B. PENCE © The Helminthological Society of Washington 2001 ISSN 1525-2647 This paper meets the requirements of ANSI/NISO Z39.48-1992 (Permanence of Paper). Copyright © 2011, The Helminthological Society of Washington Comp. Parasitol. 68(2), 2001, pp. 149-155 Development and Specificity of Oochoristica javaensis (Eucestoda: Cyclophyllidea: Anoplocephalidae: Linstowiinae) CHARLES D. CRISCIONE' AND WILLIAM F. FONT2 Department of Biological Sciences, Southeastern Louisiana University, Hammond, Louisiana 70402, U.S.A. (2 e-mail: [email protected]) ABSTRACT: Because assumptions of strict host specificity and geographic isolation apparently have been used as criteria in determining species of Oochoristica, studies were conducted to address the effects that these assumptions could have on resolving the taxonomy of Oochoristica. Experimental infections of native fence lizards, Sceloporus undulatus imdulatus, and Indo-Pacific geckos, Hemidactylus garnotii, demonstrated that the exotic tapeworm Oochoristica javaensis lacked host specificity. In addition, tapeworms with gravid proglottids, a stage of development that has not been previously reported for any species of Oochoristica, were obtained from both hosts. Evidence against the assumption of geographic isolation stems from the fact that lizard species known to harbor Oochoristica spp. have been introduced beyond their native ranges, and in some cases, these introductions predate the species descriptions. Lack of support for either assumption indicates a need for more rigorous analyses and experimentation to determine species of Oochoristica. KEY WORDS: Oochoristica javaensis, Cestoda, Hemidactylus turcicus, Hemidactylus garnotii, Sceloporus un- dulatus undulatus, Mediterranean geckos, Indo-Pacific geckos, fence lizards, development, host specificity, bio- geography, taxonomy. Approximately 80 species have been de- striction to particular geographic regions as a scribed in the cosmopolitan genus Oochoristica criterion that has ostensibly been used in the past Liihe, 1898 (Bursey and Goldberg, 1996a, b; to identify species of Oochoristica. Bursey et al., 1996, 1997; Brooks et al., 1999). In a survey of helminths of the Mediterranean These anoplocephalid cestodes predominantly gecko, Hemidactylus turcicus (Linnaeus, 1758), parasitize lizards, but also snakes, turtles, and a from Louisiana, U.S.A., a species of Oochoris- few marsupials (Schmidt, 1986; Beveridge, tica was recovered (C. D. Criscione, unpub- 1994). Development has been examined for lished data); however, there were difficulties in Oochoristica vacuolata Hickman, 1954, Oocho- identifying this species. These problems were ristica osheroffi Meggitt, 1934, and Oochoristi- associated in part with the assumptions of strict ca anolis Hardwood, 1932 (Hickman, 1963; host specificity and geographic isolation. It be- Widmer and Olsen, 1967; Conn, 1985). Al- came apparent that in addition to the lack of though larval and adult development has been specificity experiments, introduced and native examined for 3 species of Oochoristica, only host distributions were often ignored when iden- Conn (1985) tried to determine host specificity tifying species of Oochoristica. Neither assump- experimentally. In his experiments, however, he tion has been properly addressed, and in order was unable to infect wall lizards, Podarcis mur- to validate the identification of any species of alis (Laurenti, 1768) and mice, Mm musculus