Parasites of Fish from the Great Lakes - Great Lakes Fishery ...

Table 7. Jaccard coefficients of parasite-community similarity based on the presence of parasites
reported for five fish families from Lake Michigan during 1874-2010.
Fish family Cyprinidae Catostomidae Salmonidae Centrarchidae
Cyprinidae 1.0000 0.1250 0.0256 0.0416
Catostomidae 0.1250 1.0000 0.1714 0.1153
Salmonidae 0.0256 0.1714 1.0000 0.1081
Centrarchidae 0.0416 0.1153 0.1081 1.0000
Percidae 0.0434 0.2000 0.1851 0.1951
Parasite Species
LAKE SUPERIOR
Results
Thirty-five studies conducted during 1871-2010 have reported a parasite species infecting 1 or
more fish species in Lake Superior. Most studies were conducted during 1980-1999 (Table 4). A
total of 148 parasite species (4 Mastigophora, 5 Ciliophora, 8 Myxozoa, 19 adult Digenea, 12
larval/immature Digenea, 26 Monogenea, 18 adult Cestoda (not including Dibothrium
infundibuliforme), 6 larval/immature Cestoda, 18 adult Nematoda, 3 larval/immature Nematoda,
13 adult Acanthocephala, 4 Hirudinea, 11 Copepoda, 1 Mollusca) have been reported from Lake
Superior fish (Table 2). Although Bucephalus elegans, Bothriocephalus sp., Proteocephalus sp.,
Triaenophorus crassus, T. nodulosus, Hysterothylacium brachyurum, Camallanus oxycephalus,
Cystidicola farionis, Echinorhynchus sp., Neoechinorhynchus tumidus, Pomphorhynchus
bulbocolli, and Leptorhynchoides thecatus were represented in both adult and larval/immature
groups, they are listed in the adult category and only counted once. The parasites by taxonomic
group and family, infecting fish from Lake Superior, are listed in Table 8.
Protozoans
Only one genus of mastigophoran, Trypanosoma, possibly representing three or more species,
was found in the blood of Gymnocephalus cernuus and Cottus spp. Three species of ciliophorans
(Ichthyophthirius multifiliis, Scyphidia sp., Tetrahymena sp.) have been reported from G.
cernuus. Trichodina urinaria and Trichodina sp. infected Perca flavescens and Ambloplites
rupestris, respectively. Seven species of myxozoans in the Myxobolidae have been reported, with
most species occurring in one fish species or in one family. Thelohanellus notatus was found in
three species of cyprinids. All protozoans occurred in non-intestinal sites.
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