Publications

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seasonal patterns in the biology of eubothrium salvelini infecting brook trout in a creek in lower michigan.a total of 392 brook trout, salvelinus fontinalis, and 211 slimy sculpin, cottus cognatus, was examined for eubothrium salvelini (cestoda) from may 1995 through september 1996 from sweetwater creek, michigan. no seasonal pattern in prevalence, intensity, and abundance of parasites in trout and sculpin was determined. however a seasonal pattern in the length and percent gravid e. salvelini in brook trout suggests that recruitment of this parasite occurs during late summer and early fall. during t ...19989920300
parasites of juvenile brook trout (salvelinus fontinalis) from hunt creek, michigan.four parasite species (crepidostomum cooperi, cystidicoloides ephemeridarum, acanthocephalus dirus, salmincola edwardsii) infected 215 juvenile brook trout (105 young-of-year; 110, 1-yr-old) from hunt creek, michigan, in 2003, 2004, and 2005. prevalences of these species in 2004 (main study year) varied from 29 to 37%. crepidostomnum cooperi had the highest mean intensity and mean abundance, followed by c. ephemeridarum. the number of fish infected with each parasite species was significantly hi ...200717539413
polyphasic characterization of aeromonas salmonicida isolates recovered from salmonid and non-salmonid fish.michigan's fisheries rely primarily upon the hatchery propagation of salmonid fish for release in public waters. one limitation on the success of these efforts is the presence of bacterial pathogens, including aeromonas salmonicida, the causative agent of furunculosis. this study was undertaken to determine the prevalence of a. salmonicida in michigan fish, as well as to determine whether biochemical or gene sequence variability exists among michigan isolates. a total of 2202 wild, feral and hat ...201323444966
flavobacterium psychrophilum infections in salmonid broodstock and hatchery-propagated stocks of the great lakes basin.bacterial coldwater disease (bcwd), caused by flavobacterium psychrophilum, threatens wild and propagated salmonids worldwide and leads to substantial economic losses. in addition to being horizontally transmitted, f. psychrophilum can be passed from infected parents to their progeny, furthering the negative impacts of this pathogen. in michigan, both feral and captive salmonid broodstocks are the gamete sources used in fishery propagation efforts. a 5-year study was initiated to follow the prev ...201526636411
congener patterns of persistent organic pollutants establish the extent of contaminant biotransport by pacific salmon in the great lakes.in the great lakes, introduced pacific salmon (oncorhynchus spp.) can transport persistent organic pollutants (pops), such as polychlorinated biphenyls (pcbs) and polybrominated diphenyl ethers (pbdes), to new environments during their spawning migrations. to explore the nature and extent of pop biotransport by salmon, we compared 58 pcb and 6 pbde congeners found in spawning salmon directly to those in resident stream fish. we hypothesized that stream fish exposed to salmon spawners would have ...201626641658
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