| rapid loss of lampricide from catfish and rainbow trout following routine treatment. | rainbow trout (oncorhynchus mykiss) and channel catfish (ictalurus punctatus) were exposed to 3-trifluoromethyl-4-nitrophenol (tfm) and bayluscide (niclosamide) during a sea lamprey control treatment of the ford river, located in the upper peninsula of michigan. caged fish were exposed to a nominal concentration of 0.02 mg/l of niclosamide for a period of approximately 12 h. samples of fillet tissue were collected from each fish species before treatment and at 6, 12, 18, 24, 48, 96, and 192 h fo ... | 2002 | 12405775 |
| relatively rapid loss of lampricide residues from fillet tissue of fish after routine treatment. | the selective sea lamprey (petromyzon marinus) larvicide 3-trifluoromethyl-4-nitrophenol (tfm) is currently used to control parasitic sea lampreys in tributaries to the great lakes basin. the concentration and persistence of tfm and its major metabolite, tfm glucuronide (tfm-glu), was determined in fillet tissue of fish after a typical stream application. rainbow trout (oncorhynchus mykiss) and channel catfish (ictalurus punctatus) were exposed to a nominal concentration of 12.6 nmol/ml tfm for ... | 2002 | 12405776 |
| 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 ± ... | 2012 | 22493115 |
| the bacterial community associated with the leech myzobdella lugubris leidy 1851 (hirudinea: piscicolidae) from lake erie, michigan, usa. | leeches are widespread in the great lakes basin, yet their potential to harbor disease-causing agents has not been investigated. the purpose of this study was to identify the bacterial community of the commonly occurring leech, myzobdella lugubris, within the lake erie watershed. leech samples were collected from the pectoral fins of channel catfish, ictalurus punctatus, and freshwater drum, aplodinotus grunniens, from lake erie in commercial trap nets and pooled into two samples based on host a ... | 2010 | 20597437 |
| bioaccumulation of polychlorinated dibenzo-p-dioxins, dibenzofurans, and dioxin-like polychlorinated biphenyls in fishes from the tittabawassee and saginaw rivers, michigan, usa. | characterizing biological factors associated with species-specific accumulation of contaminants is one of the major focuses in ecotoxicology and environmental chemistry studies. in this study, polychlorinated dibenzo-p-dioxins (pcdds), dibenzofurans (pcdfs), and non- and mono-ortho-substituted polychlorinated biphenyl (pcb) congeners were analyzed in various fish species from the tittabawassee and saginaw rivers (12 fish species; n=314 individuals), michigan, usa. due to their migratory habits, ... | 2010 | 20206964 |
| 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, ... | 2002 | 12197110 |
| effectiveness of a sediment time critical removal action-pcb reduction in fish tissue, surface water, and sediment via wet excavation. | documenting successful remediation of polychlorinated biphenyl (pcb)-contaminated sediments is limited; potentially due to inadequate monitoring methods, complexities associated with the environment, and selected remedial techniques. at some sites, absence of appropriate baseline and postremoval monitoring limits proper evaluation of remedial efficacy. accurate interpretation of interactions between media, space, time, species, lipid content, and remedial technique requires robust study design a ... | 2015 | 25070026 |