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

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in catostomids were protozoans (Myxobolus bibullatum), adult digenetic trematodes (Lissorchis<br />

attenuatus, Phyllodistomum lysteri), monogeneans (Acolpenteron catostomi, Anonchohaptor<br />

anomalus, Dactylogyrus ursus, Gyrodactylus spathulatus, Octomacrum lanceatum), adult<br />

cestodes (Hunterella nodulosa), larval cestodes (Ligula intestinalis), adult nematodes<br />

(Philometroides nodulosa, Rhabdochona milleri), adult acanthocephalans (Neoechinorhynchus<br />

crassus, N. cristatus, Octospinifer macilentus), and leeches (Actinobdella inequiannulata).<br />

<strong>Parasites</strong> only found in percids were protozoans (Trichodina urinaria, Henneguya doori), adult<br />

digenetic trematodes (Bunodera luciopercae, Crepidostomum canadense, C. cooperi,<br />

Rhipidocotyle papillosum, Sanguinicola occidentalis), larval digenetic trematodes (Apophallus<br />

venustus, Diplostomum adamsi, D. huronense, Neascus sp.), monogeneans (Aethycteron hargisi,<br />

A. malleus, Gyrodactylus e<strong>the</strong>ostomae, G. freemani, Urocleidus adspectus), adult cestodes<br />

(Bothriocephalus cuspidatus, Proteocephalus pearsei, Triaenophorus stizostedionis), adult<br />

nematodes (Philometra cylindracea), adult acanthocephalans (Neoechinorhynchus tenellus),<br />

copepods (Ergasilus confusus), and mollusks (Anodonta sp., Elliptio complanatus). <strong>Parasites</strong> only<br />

found in salmonids were adult digenetic trematodes (Phyllodistomum coregoni), larval/immature<br />

digenetic trematodes (Ichthyocotylurus intermedia), adult cestodes (Eubothrium salvelini,<br />

Proteocephalus exiguus, P. laruei), larval cestodes (Diphyllobothrium ditremum,<br />

Diphyllobothrium sp., “rhyncobothrid” cestode, Triaenophorus crassus), adult nematodes<br />

(Capillaria salvelini, Cystidicola farionis, Cystidicoloides ephemeridarum), adult<br />

acanthocephalans (Neoechinorhynchus tumidus), and copepods (Ach<strong>the</strong>res coregoni, Ergasilus<br />

nerkae, Salmincola extumescens).<br />

The numbers and percentages <strong>of</strong> autogenic and allogenic helminth species (in paren<strong>the</strong>ses) for <strong>the</strong><br />

fish families, respectively, were Centrarchidae (20 species, 77%, 6 species, 23%), Cyprinidae (13<br />

species, 62%, 8 species, 38%), Catostomidae (12 species, 86%, 2 species, 14%), Percidae (27<br />

species, 69%, 12 species, 31%), and Salmonidae (13 species, 76%, 4 species, 24%).<br />

Jaccard Coefficients <strong>of</strong> Parasite Communities—<strong>Fish</strong> Families<br />

The species involved in calculating Jaccard coefficients <strong>of</strong> parasite-community similarity in <strong>the</strong><br />

five major fish families were Centrarchidae (Ambloplites rupestris, Lepomis gibbosus, L.<br />

macrochirus, Micropterus dolomieu, M. salmoides, Pomoxis annularis, P. nigromaculatus),<br />

Cyprinidae (Couesius plumbeus, Cyprinus carpio, Luxilus cornutus, Notemigonus crysoleucas,<br />

Notropis a<strong>the</strong>rinoides, N. hudsonius, Phoxinus neogaeus, Pimephales notatus, P. promelas,<br />

Rhinichthys cataractae, R. obtusus, Semotilus atromaculatus), Catostomidae (Catostomus<br />

commersonii, Moxostoma erythrurum, M. macrolepidotum), Percidae (E<strong>the</strong>ostoma caeruleum, E.<br />

exile, E. nigrum, Perca flavescens, Percina caprodes, Sander vitreus), and Salmonidae<br />

(Coregonus artedi, C. clupeaformis, C. hoyi, C. kiyi, C. reighardi, Oncorhynchus kisutch, O.<br />

mykiss, Salvelinus fontinalis, S. namaycush).<br />

The Jaccard coefficients <strong>of</strong> parasite-community similarity were low for all fish-family<br />

comparisons (Table 29). These coefficients ranged <strong>from</strong> a low <strong>of</strong> 0.0227 (Salmonidae and<br />

Catostomidae) to to a high <strong>of</strong> 0.1588 (Centrarchidae and Percidae). The next highest coefficient<br />

involved <strong>the</strong> Percidae and Cyprinidae (0.1136).<br />

433

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