The Experts below are selected from a list of 3993 Experts worldwide ranked by ideXlab platform
Geneva M. Omann - One of the best experts on this subject based on the ideXlab platform.
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effects of selected polybrominated diphenyl ether flame retardants on lake trout Salvelinus namaycush thymocyte viability apoptosis and necrosis
Environmental Toxicology and Chemistry, 2005Co-Authors: Kelly L. Birchmeier, Kimberly A. Smith, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Dora R Passinoreader, Geneva M. OmannAbstract:Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (<1 mg/L), effects of the tested PBDEs on thymocytes were negligible. However, at 100 mg/L, major effects were seen for congener brominated diphenyl ether 47 (BDE-47) and minor effects were seen for congener BDE-99.
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Effects of selected polybrominated diphenyl ether flame retardants on lake trout (Salvelinus namaycush) thymocyte viability, apoptosis, and necrosis
Environmental Toxicology and Chemistry, 2005Co-Authors: Kelly L. Birchmeier, Kimberly A. Smith, Dora R. Passino-reader, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Geneva M. OmannAbstract:Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (
Charles C. Krueger - One of the best experts on this subject based on the ideXlab platform.
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Evidence of sound production by spawning lake trout (Salvelinus namaycush) in lakes Huron and Champlain
Canadian Journal of Fisheries and Aquatic Sciences, 2018Co-Authors: Nicholas S. Johnson, Dennis M. Higgs, Thomas R. Binder, J. Ellen Marsden, Tyler J. Buchinger, Linnea Brege, Tyler Bruning, Steve A. Farha, Charles C. KruegerAbstract:Two sounds associated with spawning lake trout (Salvelinus namaycush) in lakes Huron and Champlain were characterized by comparing sound recordings with behavioral data collected using acoustic telemetry and video. These sounds were named “growls” and “snaps” and were heard on lake trout spawning reefs, but not on a nonspawning reef, and were more common at night than during the day. Growls also occurred more often during the spawning period than the prespawning period, while the trend for snaps was reversed. In a laboratory flume, sounds occurred when male lake trout were displaying spawning behaviors: growls when males were quivering and parallel swimming and snaps when males moved their jaw. Combining our results with the observation of possible sound production by spawning splake (Salvelinus fontinalis × Salvelinus namaycush hybrid) provides rare evidence for spawning-related sound production by a salmonid or any other fish in the superorder Protacanthopterygii. Further characterization of these sound...
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Spawning site fidelity of wild and hatchery lake trout (Salvelinus namaycush) in northern Lake Huron
Canadian Journal of Fisheries and Aquatic Sciences, 2016Co-Authors: Thomas R. Binder, Stephen C. Riley, Christopher M. Holbrook, Michael J. Hansen, Roger A. Bergstedt, Charles R. Bronte, Charles C. KruegerAbstract:Fidelity to high-quality spawning sites helps ensure that adults repeatedly spawn at sites that maximize reproductive success. Fidelity is also an important behavioural characteristic to consider when hatchery-reared individuals are stocked for species restoration, because artificial rearing environments may interfere with cues that guide appropriate spawning site selection. Acoustic telemetry was used in conjunction with Cormack–Jolly–Seber capture–recapture models to compare degree of spawning site fidelity of wild and hatchery-reared lake trout (Salvelinus namaycush) in northern Lake Huron. Annual survival was estimated to be between 77% and 81% and did not differ among wild and hatchery males and females. Site fidelity estimates were high in both wild and hatchery-reared lake trout (ranging from 0.78 to 0.94, depending on group and time filter), but were slightly lower in hatchery-reared fish than in wild fish. The ecological implication of the small difference in site fidelity between wild and hatche...
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Atypical swimbladders of lake charr, Salvelinus namaycush, from Great Slave Lake, Northwest Territories, Canada
Environmental Biology of Fishes, 2007Co-Authors: Randy L. Eshenroder, E. Don Stevens, Mara S. Zimmerman, Charles C. KruegerAbstract:Swimbladder walls of lake charr, Salvelinus namaycush, from Great Slave Lake (GSL), Northwest Territories, Canada, were unusually thick for the species. The thinnest sections of the GSL bladders (mean = 2.44mm, range = 1.1–4.4mm) were significantly thicker (P = 0.001) than lake charr swimbladders collected from two small Province of Ontario lakes (means = 0.65 and 0.92mm), whose populations were assumed to be representative of the species. Variance in wall thickness was also greater in GSL lake charr than in charr from two small lakes (P < 0.02). Within individuals, some of the GSL bladder walls were markedly irregular in thickness, but whether these anomalies exist in situ or were artifacts of preservation remains uncertain. The bulk of the tissue in the thickest sections of the GSL swimbladders was in the tunica serosa (outer layer). The extent of the modification of the GSL swimbladders is extraordinary for northern fishes in postglacial lakes.
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mitochondrial dna variation among lake trout Salvelinus namaycush strains stocked into lake ontario
Canadian Journal of Fisheries and Aquatic Sciences, 1993Co-Authors: Peter M. Grewe, Charles C. Krueger, Charles F Aquadro, Eldredge Bermingham, Harold L Kincaid, Bernie MayAbstract:Mitochondrial DNA (mtDNA) variation was examined in 492 fish representing six lake trout (Salvelinus namaycush) strains used for stocking and restoring populations in Lake Ontario. mtDNA was extracted from 432 fish by a total DNA isolation protocol (CTAB). mtDNA was also extracted from 60 additional fish using the purification method of CsCl ultracentrifugation. The more rapid CTAB protocol made feasible analysis of sample sizes (n ≥ 80 per strain) required as baseline data for future mixed-stock analysis (MSA). Restriction enzymes AvaI, BamHI, HinfI, and TaqI resolved seven mtDNA haplotypes and were used to characterize fish from each of six strains (Clearwater, Jenny, Killala, Manitou, Seneca, and Superior). Frequencies of these haplotypes were significantly different among the six strains (p < 0.001). Differences between haplotype frequencies of the Killala and Superior strains were striking and permit greater discrimination of these strains than allozyme data. The level of differentiation observed amo...
Sergei M. Chernyak - One of the best experts on this subject based on the ideXlab platform.
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effects of selected polybrominated diphenyl ether flame retardants on lake trout Salvelinus namaycush thymocyte viability apoptosis and necrosis
Environmental Toxicology and Chemistry, 2005Co-Authors: Kelly L. Birchmeier, Kimberly A. Smith, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Dora R Passinoreader, Geneva M. OmannAbstract:Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (<1 mg/L), effects of the tested PBDEs on thymocytes were negligible. However, at 100 mg/L, major effects were seen for congener brominated diphenyl ether 47 (BDE-47) and minor effects were seen for congener BDE-99.
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Effects of selected polybrominated diphenyl ether flame retardants on lake trout (Salvelinus namaycush) thymocyte viability, apoptosis, and necrosis
Environmental Toxicology and Chemistry, 2005Co-Authors: Kelly L. Birchmeier, Kimberly A. Smith, Dora R. Passino-reader, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Geneva M. OmannAbstract:Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (
Dora R Passinoreader - One of the best experts on this subject based on the ideXlab platform.
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effects of selected polybrominated diphenyl ether flame retardants on lake trout Salvelinus namaycush thymocyte viability apoptosis and necrosis
Environmental Toxicology and Chemistry, 2005Co-Authors: Kelly L. Birchmeier, Kimberly A. Smith, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Dora R Passinoreader, Geneva M. OmannAbstract:Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (<1 mg/L), effects of the tested PBDEs on thymocytes were negligible. However, at 100 mg/L, major effects were seen for congener brominated diphenyl ether 47 (BDE-47) and minor effects were seen for congener BDE-99.
Kelly L. Birchmeier - One of the best experts on this subject based on the ideXlab platform.
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effects of selected polybrominated diphenyl ether flame retardants on lake trout Salvelinus namaycush thymocyte viability apoptosis and necrosis
Environmental Toxicology and Chemistry, 2005Co-Authors: Kelly L. Birchmeier, Kimberly A. Smith, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Dora R Passinoreader, Geneva M. OmannAbstract:Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (<1 mg/L), effects of the tested PBDEs on thymocytes were negligible. However, at 100 mg/L, major effects were seen for congener brominated diphenyl ether 47 (BDE-47) and minor effects were seen for congener BDE-99.
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Effects of selected polybrominated diphenyl ether flame retardants on lake trout (Salvelinus namaycush) thymocyte viability, apoptosis, and necrosis
Environmental Toxicology and Chemistry, 2005Co-Authors: Kelly L. Birchmeier, Kimberly A. Smith, Dora R. Passino-reader, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Geneva M. OmannAbstract:Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (
