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Article Excerpt
Abstract. -- A total of 45 bullfrogs (Rana catesbeiana) were collected from Big Hill Bayou, Jefferson County, Texas in June, 2004 and inspected for helminth parasites. Forty-two of 45 (prevalence = 93%) were infected with one or more helminth parasites representing three phyla (three nematode species, six trematode species, and a single acanthocephalan). A total of 5812 individual helminths were recovered with mean abundance of infection = 129.16 [+ or -] 130.96 worms per host and mean species richness = 2.22 [+ or -] 1.28 helminth species per host individual. This is the first report of Neoechinorhynchus sp. from Texas bullfrogs.
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The bullfrog (Rana catesbeiana) is the largest and one of the most aquatic ranid frogs occurring in North America. Its range encompasses a large area from southern Canada to central Florida in the east through the central U.S. west to eastern Colorado and eastern New Mexico, and it has been introduced in several other locations throughout the world (Conant & Collins 1998). Surveys of endohelminth communities in R. catesbeiana are fairly numerous. Andrews et al. (1992) provides a North American checklist of helminth species, locations, and authors for this host. Notable work omitted or published since that summary includes Harwood (1932), Muzzall (1991), McAlpine (1997), McAlpine & Burt (1998), and Goldberg et al. (1998). Relatively few studies concerning these parasitic associations have been conducted in Texas (Harwood 1932; Knight et al. 1965; Morrison 1966; 1968; Slagle 1966; Hollis 1972). The following adds to this body of information.
MATERIALS AND METHODS
A total of 45 Bullfrogs (Rana catesbeiana) was collected by hand from Big Hill Bayou (29[degrees]50'N, 95[degrees]05'W), Jefferson County, Texas on...
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