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  E-mail Message: I thought you might be interested in this item at http://www.worldcat.org/oclc/486581525 Title: Occurrence of Halipegus occidualis (Digenea: Derogenidae) and Other Trematodes in Rana pretiosa (Anura: Ranidae) from Idaho, U.S.A. Publisher: ISBN/ISSN: 0003-0023 OCLC:486581525

  
  

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Occurrence of Halipegus occidualis (Digenea: Derogenidae) and Other Trematodes in Rana pretiosa (Anura: Ranidae) from Idaho, U.S.A.

Author:	Kevin R Russell; Richard L Wallace
Edition/Format:	Article : English
Publication:	Transactions of the American Microscopical Society, Apr., 1992, vol. 111, no. 2, p. 122-127
Database:	JSTOR
Summary:	Fifty-nine spotted frogs, Rana pretiosa (26 juveniles, 33 adults) from five pond sites in northern Idaho were examined for endoparasites. Halipegus occidualis was found in the eustachian tubes and oral cavity of eight spotted frogs. This finding represents a new host and new state locality for this trematode parasite. H. occidualis was found only in adult frogs (8/33, 24%; 8/59, 14% in all frogs) and occurred in a mean intensity of 4.0. Oral suckers were smaller (0.35 mm vs. 0.47 mm, diameter) than those reported for eastern specimens. The left testis always was anterior to the right. Infections of H. occidualis were from three of the five localities. Two other trematodes, Haematoloechus varioplexus and Haplometrana intestinalis, were found in the lungs and intestinal tracts, respectively. The greatest mean intensity of infection in adult frogs was 16.9 for H. varioplexus. When all frogs were considered, Haplometrana intestinalis was most prevalent (30/59, 51%).  Read more...
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