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Journal of the Helminthological Society of Washington 65(1) 1998

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Journal of the Helminthological Society of Washington 65(1) 1998 Volume 65 January 1998 Number 1 JOURNAL The Helminthologjcal Society J of Washington v 7' " " -- ^ " '.'""" 7 , ' "•* •>'•'- >4 semiannual journal of research devoted to Helmlnthology and all branches of Parasitology Supported in part by the :6rayt6n H. Ransom Memorial Trust Fund CONTENTS THOMAS, E, M. VILLA, I. MONTOLIU, F. SANTALLA, F. CEZILLY, AND F RENAUD. , Analyses ^of-a Debilitating Parasite (MicropHallus papillorobustus, Trematoda) and Its "Hitchhiker" Parasite (Maritrema subdolum, Trematoda) on Survival of Their Intermediate Host (Gammarus insensibilis, Amphipoda) - ...'., ...:. NAHHAS, F. M., AND O. SEY. Chauhanotfema spiniacetabulwn sp;'n. (Digenea:^War- etrematidae) from Hemiramphus marginatus (Forsskal) (Hemiramphidae) from the , Kuwaiti Coast of the Arabian Gulf '.. ..r..:;. :-_-• __. l_j_ McALPiNE, D. E, AND M. D. B. BURT. Taxonomic Status of Halipegiis sppr(Digenea: Derogenidae) Parasitic in the Mouth and^Eustachian Tubes of North American and Mexican Amphibians - __^ . s- - - « - ,— --- 10 DAILEY, M. D., S:^ R. GOLDBERG, AND C..R. BURSEY. Allppharynx macallisteri sp. n. .(Trematoda: Plagiorchiidae) from the Mourning Gecko, Lepidodactylus lugubris, from Guam, Mariana Islands.xMicronesia, with a Key to the Species of the Genus Allopharvnx „ . —. ;. .:. ^ C 16 DRONEN, N. O., J. E. BARLEY, AND W. J. WARDLE: Himasthla catoptrophori sp. n. (Trematoda: Echinostomatidae) from Willets, Catoptrophorus semipalmatus (Charadriiformes: Scolopacidae), from the Galveston, Texas Area ...". , 21 LAMOTHE-4RGUMEDOrR., C. ARANDA-CRUZ, AND G. P£REZ-PONCE DE tE6N. Choricotyle leonilavazquezae sp. n. (Monogenea: Diclidophoridae) Parasitic on Microlepidotus / .brevipinms (Osteichthyes: Haemulidae) from Chamela Bay,(Jalisco, Mexico ..— 24 KRITSKY, D. C., W. A. BOEDER, AND M. JEGU. 'Neotropical Monogenoidea. 31. An- ;> cyrocephalinae (Dactylogyridae) of-Piranha and Their Relatives (Teleostei, Ser- rasalmidae) from Brazil: Species of Notothecium Boeger and Kritsky, 1988, and \ gen. n '. ____2>_x _~ :l.i.I . X. 31 KA^'J. ~N., AND^R. RASOLOFONIRINA. A New Species of Pedibothrium (Cestoidea: Tetraphyllidea) from the S^hort-tail Nurse Shark, Pseudoginglymostoma,brevicau- datum (Elasmobranchii: Orectilobiformes), from Southwest Madagascar 1 ~~'(Continued on Outside Back Cover) Copyright © 2011, The Helminthological Society of Washington THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON THE SOCIETY meets in October, November, February, April and May for the presentation and discussionxof papers in any and all branches of parasitology or related sciences. All interested persons are invited to attend. Persons interested in membership in the >Helmintholpgical Society of Washington may obtain ap- plication blanks in recent issues of THE JOURNAL. A year's subscription to the Journal is included in the annual dues of $25.00 domestic and $28fOO foreign. Institutional subscriptions are $50.00 per year. The HelmSoc internet home page is located at httpj//www.gettysburg.edu/~shendrix/helmsoc.htrnl ,.-'.""'. OFFICERS OF THE SOCIETY FOR 1998 President: ERIC P. HOB ERG Vice President: RONALD NEAFIE Corresponding Secretary-Treasurer: HARLEY G. SHEFFIELD Recording Secretary: W. PATRICK CARNEY Archivist/Librarian: PATRICIA A. PILITT „• Custodian of Back Issues: J. RALPH LICHTENFELS Representative to the American Society of Parasitologists: ERIC P. HOBERG Executive Committee Members-at-Large: KEVIN BAIRD, 1998 JOHN H. CROSS, 1998 _- Immediate Past President: ELLEN ANDERSEN THE JOURNAL OF THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON ;; \E JOURNAL,is published semiannually at Lawrence, Kansas by the Helminthological Society of Washington. Papers need not be presented at a meeting to be published in the Journal. MANUSCRIPTS should be sent to the>EDITOR, Sherman S. Hendrix, Department of Biology, •Gettysburg College, Gettysburg, PA 17325. email: [email protected]. Manuscripts must be typewritten, double spaced, and in finished form. Consult recent issues of the Journal for format and style. The original and,two copies are required. Photocopies of drawings may be submitted for review purposes but glossy prints of halftones are required; originals will be requested after acceptance of trie manuscript. Papers are accepted with the understanding that they will;be published only In the Journal. REPRINTS may be ordered from the PRINTER at the same time the corrected proof is returned to the EDITOR. ,/Y AUTHORS' CONTRIBUTIONS to publication costs (currently $50/pg for members, $100 for non- members) will .be-billed by Allen Press and are payable to the SOCIETY. BACK VOLUMES of the Journal are available. Inquiries concerning back'volumes and current subscriptions should be directed to the business office. BUSINESS OFFICE. The Society's business office is at Lawrence, Kansas. All inquiries concerning subscriptions or back jssues 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. < SHERMAN S. HENDRIX, Editor ' 1998 —;; 1999 ; 2000 -=-x. '' DANIEL R. BROOKS . JQHNM. AHO ROY C. ANDERSON ERIC P. HOBERG DWIGHT D. BOWMAN RALPH P. XECKERLIN ROBIN M. OVERSTREET WILLIAM F.) FONT RONALD PAYER - MARY H. PRITCHARD JOHN C. HOLMES A. MORGAN GOLDEN ROBERT L.jRAUSCH J. RALPH LICHTENFELS ROBIN N. HUETtEL HARLEY G. SHEFFIELD , JOHN S. MACKIEWICZ FUAD M. NAHHAS ' DENNIS A. THONEY BRENT B. NICKOL DANNY B. PENCE_; STEVE J. UPTON "VASSILIOS THEODORIDES .JOSEP-HF,IJRBAN; The Helminthological Society of Washington 1998 ISSNX1049-233X © This paper meets the requirements of ANSI/NISO Z39.48-1992 (Permanence of Paper). Copyright © 2011, The Helminthological Society of Washington J. Helminthol. Soc. Wash. 65(1), 1998 pp. 1-5 Analyses of a Debilitating Parasite (Microphallus papillorobustus, Trematoda) and Its "Hitchhiker" Parasite (Maritrema subdolum, Trematoda) on Survival of Their Intermediate Host (Gammarus insensibilis, Amphipoda) FREDERIC THOMAS,' MERCEDES ViLLA,2 ISABELLE MoNTOLiu,2 FRANCIS SANTALLA,2 FRANK CEZiLLY,3 AND FRANCOIS RENAUDM 1 Laboratoire de Parasitologie Comparee (UMR 5555, CNRS), Universite Montpellier II (CC 105), Place Eugene Bataillon, 34095 Montpellier Cedex 5, France, 2 Facultad de Farmacia, Laboratorio de Parasitologia, Universidad de Barcelona, Avda Diagonal, 08028, Barcelona, Espagne, and 3 Laboratoire d'Ecologie, Universite de Bourgogne, 21004 Dijon Cedex, France ABSTRACT: Parasites that alter their intermediate host's behavior to favor its predation by the definitive host are known from a wide range of host-parasite associations. Recently, we found a new category of parasites, so- called "hitchhikers," unable to modify the behavior of their intermediate host but exploiting the same host spectrum, that gain benefits in transmission success from the infection of these behaviorally manipulated hosts. Because the probability of successful transmission by "hitchhiking" depends on 1) the efficiency of the "fa- vorization" process of the debilitating parasite and 2) the effects of infection by the hitchhiker parasite on the host survival, we investigated these two aspects. In the laboratory, we showed that, in the absence of a predator (definitive host), there is no significant difference between the mortality rates of Gammarus insensibilis (second intermediate host) uninfected and infected by the debilitating trematode Microphallus papillorobustus. In the field, we showed that the hitchhiker trematode Maritrema subdolum does not significantly reduce host survival. These results suggest that the higher mortality rate of manipulated hosts in the field could be explained by the predation by the definitive hosts and that M. subdolum does not alter, through survival reduction, the efficiency of the favorization process. KEY WORDS: trematode, Gammarus, Microphallus papillorobustus, Maritrema subdolum, survival, hitchhik- ing strategy. In a wide range of complex parasite life cy- ing" strategy from a complex association in- cles, parasites have been shown to modify the volving two trematode parasites and one gam- behavior of their intermediate hosts to enhance marid species as intermediate host: gammarids their probability of predation by the definitive (Gammarus insensibilis) infected by Microphal- host (Bethel and Holmes, 1973; Camp and Hui- lus papillorobustus Rankin, 1940 (Trematoda, zinga, 1979; Giles, 1983; Hoogenboom and Microphallidae), are named "mad gammarids" Dijkstra, 1987; Barnard and Behnke, 1990; because they display an aberrant behavior that Combes, 1991; Esch and Fernandez, 1993; Pou- renders them more vulnerable than uninfected lin, 1995). Even if they are difficult to quantify, ones to predation by aquatic birds, the definitive these host manipulations are probably often hosts (Helluy, 1983a, 1983b); Maritrema sub- costly to achieve (Poulin, 1995). Theory predicts dolum Jagerskiold, 1909 (Trematoda Microphal- that other parasites would benefit from such ef- lidae), enhances its transmission to the definitive ficient mechanisms of "favorization," through hosts by parasitizing amphipods previously in- preferentially infecting hosts previously infected fected by the debilitating trematode (i.e., M. by a debilitating parasite (Combes, 1991; Poulin, papillorobustus). 1994; Lafferty and Moms, 1996). These para- Infection by parasites tends frequently to re- sites could obtain a high probability of trans- duce the energy available for sustaining essential mission, making no investment in manipulation functions and,
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