Intestinal Helminths of the White Sucker, Catostomus Commersoni (Lacepede), in SE Wisconsin
OF WASHINGTON, VOLUME 41, NUMBER 1, JANUARY 1974 81 Intestinal Helminths of the White Sucker, Catostomus commersoni (Lacepede), in SE Wisconsin OMAR M. AMIN Science Division, University of Wisconsin-Parkside, Kenosha 53140 ABSTRACT: Five species of helminths were recovered from the intestine of the white sucker, Catostomus commersoni (Lacepede), in southeastern Wisconsin. Hosts were seined in five sites in both the Root River (Milwaukee and Racine counties; autumn 1971) and the Pike River (Racine and Kenosha counties; autumn 1972). The helminths are Triganodistomum attenuatum Mueller and Van Cleave, 1932 (Trem- atoda: Lissorchiidae), new locality record; Eiacetabulum macrocephalum McCrae, 1962 (Cestoda: Caryophyllaeidae), new state record; Biacetabulum biloculoides Mackiewicz and McCrae, 1965 (Cestoda: Caryophyllaeidae), new state record; Acanthocephahis dims (Van Cleave, 1931) Van Cleave and Townsend, 1936, new host and state record; Dorylaimtis sp. (?) Dujardin, 1845 (Nematoda: Dory- laimidae), a nonparasitie nematode reported for the first time in this fish. Distribution, structural obser- vations, and host-parasite relationships of the above species are discussed. Previous reports of fish parasites in Wis- upon recovery were placed in 70% alcohol. consin were confined to the geographical Hosts were classed in one of three size classes northeast and west (Pearse, 1924a), north according to their total length, 5-9.9, 10-14.9, (Bangham, 1946), northwest (Fischthal, 1947, and 15-37 cm. 1950, 1952), and east (Anthony, 1963). These Trematodes and cestodes were stained in reports dealt only with host records. Literature Semichon's carmine, cleared in xylene, and on the ecology or host-parasite relationship of whole-mounted in Canada balsam. Acantho- fish parasites in Wisconsin is relatively scarce cephalans were fixed in Bouin's fluid, stained (Marshall and Gilbert, 1905; Pearse, 1924b; in Harris' hematoxylin, cleared in beechwood Cross, 1938).
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