Abstract
ABSTRACT: A survey of 2 species of ictalurid catfishes, channel catfish (Ictalurus punctatus) and yellow bullhead (Ameiurus natalis), was conducted in southeastern Texas, United States. Sixty-nine channel catfish and 26 yellow bullhead were collected from 6 sites within the Big Thicket National Preserve and 6 sites in surrounding bodies of water. Thirty-one species of parasites were found including 11 trematodes, 8 nematodes, 5 copepods, 3 cestodes, and 1 each of an acanthocephalan, leech, monogene, and myxozoan. Channel catfish harbored 23 species of parasites, yellow bullhead harbored 17, and 9 species occurred in both host species. Adult endohelminths dominated the fauna (18 species). Trematodes (Alloglossidium corti, Alloglossidium kenti, Polylekithum catahoulensis), a cestode (Megathylacoides giganteum), a nematode (Dichelyne robusta), and an ectoparasitic copepod (Ergasilus cerastes) constituted over 75% of the total parasite abundance. Although this constitutes the highest species diversity report...
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