Publications

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first record of neoergasilus japonicus (poecilostomatoida: ergasilidae), a parasitic copepod new to the laurentian great lakes.the parasitic copepod neoergasilus japonicus, native to eastern asia, was first collected from 4 species of fish (fathead minnow, pimephales promelas; largemouth bass, micropterus salmoides; pumpkinseed sunfish, lepomis gibbosus; and yellow perch, perca flavescens) in july 1994 in saginaw bay, lake huron, michigan. further sampling in the bay in 2001 revealed infections on 7 additional species (bluegill, lepomis macrochirus; carp, cyprinus carpio; channel catfish, ictalurus punctatus; goldfish, ...200212197110
perfluorinated compounds in aquatic organisms at various trophic levels in a great lakes food chain.trophic transfer of perfluorooctanesulfonate (pfos) and other related perfluorinated compounds was examined in a great lakes benthic foodweb including water-algae-zebra mussel-round goby-smallmouth bass. in addition, perfluorinated compounds were measured in livers and eggs of chinook salmon and lake whitefish, in muscle tissue of carp, and in eggs of brown trout collected from michigan. similarly, green frog livers, snapping turtle plasma, mink livers, and bald eagle tissues were analyzed to de ...200515883668
heterogeneity in levels of serum neutralizing antibodies against viral hemorrhagic septicemia virus genotype ivb among fish species in lake st. clair, michigan, usa.the presence of neutralizing antibodies against viral hemorrhagic septicemia virus (vhsv-ivb) was investigated in sera of 13 fish species collected from lake st. clair, michigan, usa, a vhsv-endemic water body. we tested 297 sera collected may 2004-june of 2010, using a complement-dependent 50% plaque neutralization test (50% pnt). neutralizing antibodies were detected in 23% (67/297) of the samples. the highest overall antibody prevalence (85%, 34/40) and mean positive antibody titer (12,113 ± ...201222493115
concentrations and hazard assessment of organochlorine contaminants and mercury in smallmouth bass from a remote lake in the upper peninsula of michigan.concentrations of pcbs, ddts, toxaphene, chlordanes, dieldrin, and mercury were determined in smallmouth bass (micropterus dolomieui) collected from fumee lake, a remote lake in the upper peninsula of michigan. an ecological hazard assessment was conducted to determine potential impacts of contaminants on bald eagles and mink eating fish from this lake. concentrations of organochlorines, except toxaphene, and mercury in smallmouth bass were similar to those found in fish from lake superior, wher ...19989419276
occurrence of acanthocephalans in largemouth bass and smallmouth bass (centrarchidae) from gull lake, michigan.a total of 65 largemouth bass, micropterus salmoides, and 27 smallmouth bass, m. dolomieu, collected in april-september 2000 and april-july 2001 from gull lake, michigan, were examined for acanthocephalans. leptorhynchoides thecatus and neoechinorhynchus cylindratus infected all the bass examined. leptorhynchoides thecatus had the highest mean intensity (258.2 +/- 185.4 in 2000 and 145.0 +/- 61.0 in 2001) of the species infecting smallmouth bass. although n. cylindratus had higher mean intensiti ...200415270122
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