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1 August 2010 Helminth Parasites of the Leopard Frog Lithobates sp. Colima (Amphibia: Ranidae) from Colima, Mexico
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The helminth fauna inhabiting Lithobates sp. Colima from Ticuizitán, Colima, Mexico, comprises 10 species: 4 digeneans (Clinostomum sp., Glypthelmins quieta, Haematoloechus sp., and Langeronia macrocirra), 5 nematodes (Aplectana itzocanensis, Cosmocerca podicipinus, Foleyellides striatus, Oswaldocruzia subauricularis, and Rhabdias sp.), and 1 cestode (Cyclophyllidea). Glypthelmins quieta, L. macrocirra, and A. itzocanensis represent new host records. These observations, added to previous records from Acapulco, Guerrero, Mexico, indicate that the helminth fauna of Lithobates sp. from Colima comprises 25 taxa. Frogs are being parasitized by 3 infection routes: ingestion of intermediate host, skin penetration by larval forms, and transmission by vectors. Species of Aplectana, Cosmocerca, Foleyellides, and Oswaldocruzia occurred in high prevalence in Colima, similar to a previous study on the same frog species from Guerrero. In Colima, Glypthelmins, Haematoloechus, and Rhabdias also occurred in high prevalence. Haematoloechus species reached the highest mean intensity in both localities. The semiaquatic habits of this species of frog and the availability of particular feeding resources appear to determine the helminth composition and infection levels; however, co-speciation events also play an important role structuring these helminth communities.

Elisa Cabrera-Guzmán, Lorena Garrido-Olvera, and Virginia León-Règagnon "Helminth Parasites of the Leopard Frog Lithobates sp. Colima (Amphibia: Ranidae) from Colima, Mexico," Journal of Parasitology 96(4), (1 August 2010).
Received: 14 September 2009; Accepted: 1 March 2010; Published: 1 August 2010

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