Helminths of pond-reared walleye from Wisconsin.
One hundred extended growth walleye fingerlings, Sander vitreus (Percidae), collected on 6 October 2004, from 1 rearing pond at the Lake Mills State Fish Hatchery in Lake Mills, Wisconsin, were examined for parasites. Diplostomum sp. (Trematoda: Diplostomatidae), Contracaecum sp. (Nematoda: Anisakidae), Bothriocephalus cuspidatus (Cestoda: Bothriocephalidae), and Proteocephalus sp. (Cestoda: Proteocephalidae) were the only parasites found. The first 3 species occurred as larval stages. Diplostomum sp. and Contracaecum sp. had similar prevalences, mean intensities, and mean abundances (72%, 2.2, and 1.6 and 71%, 2.1, 1.5, respectively) in walleye fingerlings. A headlamp technique used by the Wisconsin Department of Natural Resources personnel generated a prevalence of Diplostomum sp. in the lens that overestimated the prevalence of Diplostomum sp. found in a random subsample of 100 fingerlings examined with a microscope. Proteocephalus sp. and B. cuspidatus infected 14 and 12 fingerlings, respectively.
Muzzall
Patrick M
PM
Department of Zoology, Michigan State University, East Lansing, Michigan 48824, USA. muzzall@msu.edu
Eggold
Bradley T
BT
Fahey
Robert J
RJ
D000818:Animals; D017191:Ascaridida Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary; D001199:Ascaridoidea / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification; D002589:Cestoda / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification; D002590:Cestode Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary; D015822:Eye Infections, Parasitic / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary; D005260:Female; D005393:Fish Diseases / Q000453:epidemiology / Q000469:parasitology*; D005398:Fisheries; D006374:Helminthiasis, Animal / Q000453:epidemiology / Q000469:parasitology*; D006376:Helminths / Q000145:classification* / Q000254:growth & development / Q000302:isolation & purification; D008297:Male; D010471:Perches / Q000469:parasitology*; D015995:Prevalence; D014200:Trematoda / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification; D014201:Trematode Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary; D014922:Wisconsin / Q000453:epidemiology