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

The numbers and percentages of autogenic and allogenic helminth species (in parentheses) for
each fish family, respectively, were Centrarchidae (10 species, 71%, 4 species, 29%), Cyprinidae
(9 species, 50%, 9 species, 50%), Catostomidae (19 species, 86%, 3 species, 14%), Percidae (20
species, 77%, 6 species, 23%), and Salmonidae (28 species, 82%, 6 species, 18%).
Jaccard Coefficients of Parasite Communities—Fish Families
Jaccard coefficients of parasite-community similarity were calculated for the following fish
families and species: Centrarchidae (Ambloplites rupestris, Micropterus dolomieu), Cyprinidae
(Luxilus cornutus, Notropis hudsonius, Pimephales notatus, Rhinichthys cataractae),
Catostomidae (Catostomus catostomus, C. commersonii), Percidae (Gymnocephalus cernuus,
Perca flavescens, Sander vitreus), and Salmonidae (Coregonus alpenae, C. artedi, C.
clupeaformis, C. hoyi, C. kiyi, C. zenithecus, Oncorhynchus gorbuscha, O. kisutch, O. mykiss, O.
tshawytscha, Prosopium coulteri, P. cylindraceum, Salmo trutta, Salvelinus fontinalis, S.
namaycush). The coefficients were very low and ranged from 0.0377 (Catostomidae and
Centrarchidae) to 0.0923 (Salmonidae and Centrarchidae) and indicate that few parasite species
are shared among fish species in these fish families (Table 11).
Species or a specific genus of each major parasite group reported for two or more of the five fish
families (in parentheses) are: adult digenetic trematodes—Allocreadium lobatum (2),
Crepidostomum cornutum (2), Azygia angusticauda (2), larval/immature digenenetic
trematodes—Clinostomum complanatum (4), Diplostomum spathaceum (10), Posthodiplostomum
minimum (2), Ichthyocotylurus erraticus (2), Ichthyocotylurus pileatus (2), adult cestodes—
Cyathocephalus truncatus (2), larval/immature cestodes—Bothriocephalus sp. (2),
Diphyllobothrium latum (2), Ligula intestinalis (3), Proteocephalus ambloplitis (2),
Triaenophorus nodulosus (2), adult nematodes—Hysterothylacium brachyurum (4), Cystidicola
farionis (2), Cystidicola stigmatura (2), Rhabdochona canadensis (2), Spinitectus gracilis (4),
larval/immature nematodes—Raphidascaris acus (2), adult acanthocephalans-Acanthocephalus
dirus (8), Echinorhynchus lateralis (2), Echinorhynchus salmonis (8), Neoechinorhynchus
crassus (2), Neoechinorhynchus cylindratus (2), Neoechinorhynchus rutili (2),
Neoechinorhynchus tenellus (2), Pomphorhynchus bulbocolli (5), and Leptorhynchoides thecatus
(3).
Discussion
Lake Superior is the largest and deepest of the Great Lakes with an approximate length and width
of 563 km and 257 km, respectively (Herdendorf, 1982). Its surface area is approximately 82,100
km 2 and has a mean depth (maximum) of 149 m (405 m). The waters of Lake Superior flow into
Lake Huron through the St. Marys River.
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