Jean V Adams, PhD (Former Employee)
Science and Products
Filter Total Items: 79
Factors affecting bottom trawl catches: Implications for monitoring the fishes of Lake Superior
An annual daytime bottom trawl survey of the Lake Superior fish community designed in 1978 does not adequately assess the entire community. Whereas recent studies have recommended that pelagic species be surveyed with a combination of acoustic and midwater trawling methods (AC-MT), we used bottom trawling to study the effects of depth, diel period, and season on biomass estimates and the sizes of
Authors
D.L. Yule, J.V. Adams, J.D. Stockwell, O. T. Gorman
Vertical distribution of fish biomass in Lake Superior: Implications for day bottom trawl surveys
Evaluation of the biases in sampling methodology is essential for understanding the limitations of abundance and biomass estimates of fish populations. Estimates from surveys that rely solely on bottom trawls may be particularly vulnerable to bias if pelagic fish are numerous. We evaluated the variability in the vertical distribution of fish biomass during the U.S. Geological Survey's annual sprin
Authors
J.D. Stockwell, D.L. Yule, T.R. Hrabik, J.V. Adams, O. T. Gorman, B.V. Holbrook
Using multiple gears to assess acoustic detectability and biomass of fish species in lake superior
Recent predator demand and prey supply studies suggest that an annual daytime bottom trawl survey of Lake Superior underestimates prey fish biomass. A multiple-gear (acoustics, bottom trawl, and midwater trawl) nighttime survey has been recommended, but before abandoning a long-term daytime survey the effectiveness of night sampling of important prey species must be verified. We sampled three bott
Authors
D.L. Yule, J.V. Adams, J.D. Stockwell, O. T. Gorman
Temporal trends of young-of-year fishes in Lake Erie and comparison of diel sampling periods
We explored temporal trends of young-of-year (YOY) fishes caught in bottom trawl hauls at an established offshore monitoring site in Lake Erie in fall during 1961–2001. Sampling was conducted during morning, afternoon, and night in each year. Catches per hour (CPH) of alewife (Alosa pseudoharengus) YOY were relatively low and exhibited no temporal trend. This result was consistent with the species
Authors
M.A. Stapanian, M.T. Bur, J.V. Adams
Shell-free biomass and population dynamics of dreissenids in offshore Lake Michigan, 2001-2003
The USGS-Great Lakes Science Center has collected dreissenid mussels annually from Lake Michigan since zebra mussels (Dreissena polymorpha) became a significant portion of the bottom-trawl catch in 1999. For this study, we investigated dreissenid distribution, body mass, and recruitment at different depths in Lake Michigan during 2001-2003. The highest densities of dreissenid biomass were observed
Authors
J. R. P. French, J.V. Adams, J. Craig, R.G. Stickel, S. J. Nichols, G.W. Fleischer
Improving the design of acoustic and midwater trawl surveys through stratification, with an application to Lake Michigan prey fishes
Reliable estimates of fish biomass are vital to the management of aquatic ecosystems and their associated fisheries. Acoustic and midwater trawl surveys are an efficient sampling method for estimating fish biomass in large bodies of water. To improve the precision of biomass estimates from combined acoustic and midwater trawl surveys, sampling effort should be optimally allocated within each stage
Authors
J.V. Adams, R.L. Argyle, G.W. Fleischer, G.L. Curtis, R.G. Stickel
Effects of selected polybrominated diphenyl ether flame retardants on lake trout (Salvelinus namaycush) thymocyte viability, apoptosis, and necrosis
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 teste
Authors
Kelly L. Birchmeier, Kimberly A. Smith, Dora R. Passino-Reader, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Geneva M. Omann
Embryonic developmental progression in lake trout (Salvelinus namaycush) (Walbaum, 1792) and its relation to lake temperature
Developmental progression of lake trout (Salvelinus namaycush) embryos was examined with light and scanning electron microscopy. From this examination, key developmental stages were described in detail. The key developmental stages were then applied to individual lake trout egg lots incubated in constant temperatures of 2, 4, 6, 8, and 10°C. We used Belehradek's, Thermodynamic, and Power models, a
Authors
Jeffrey D. Allen, Glenn K. Walker, Jean V. Adams, S. Jerrine Nichols, Carol C. Edsall
Modeling the suppression of sea lamprey populations by use of the male sex pheromone
The suppression of sea lamprey populations, Petromyzon marinus (Linnaeus), was modeled using four different applications of the male sex pheromone: (1) pheromone-baited traps that remove females from the spawning population, (2) pheromone-baited decoys that exhaust females before they are able to spawn, (3) pheromone-enhanced sterile males that increase the proportion of non-fertile matings, and (
Authors
Waldemar Klassen, Jean V. Adams, Michael B. Twohey
Occurrence of Cyathocephalus truncatus (Cestoda) in fishes of the Great Lakes with emphasis on its occurrence in round gobies (Neogobius melanostomus) from Lake Huron
Cyathocephalus truncatus is a pathogenic cestode that is common in many Laurentian Great Lakes fish species, but the depth distribution of this cestode has not been studied. Cyathocephalus truncatus has been reported from 21 fish species and one hybrid representing seven orders and nine families in Lakes Superior, Michigan, Huron, and Ontario. We examined the intestinal contents of six species of
Authors
John R. P. French, Patrick M. Muzzall, Jean V. Adams, Kendra L. Johnson, Angela E. Flores, Andrea M. Winkel
Modeling the suppression of sea lamprey populations by the release of sterile males or sterile females
The suppressive effects of trapping adult sea lampreys, Petromyzon marinus Linnaeus, and releasing sterile males (SMRT) or females (SFRT) into a closed system were expressed in deterministic models. Suppression was modeled as a function of the proportion of the population removed by trapping, the number of sterile animals released, the reproductive rate and sex ratio of the population, and (for th
Authors
Waldemar Klassen, Jean V. Adams, Michael B. Twohey
Comparison of spring measures of length, weight, and condition factor for predicting metamorphosis in two populations of sea lampreys (Petromyzon marinus) larvae
The ability to predict when sea lampreys (Petromyzon marinus) will metamorphose from the larval phase to the parasitic phase is essential to the operation of the sea lamprey control program. During the spring of 1994, two populations of sea lamprey larvae from two rivers were captured, measured, weighed, implanted with coded wire tags, and returned to the same sites in the streams from which they
Authors
Mary P. Henson, Roger A. Bergstedt, Jean V. Adams
Science and Products
Filter Total Items: 79
Factors affecting bottom trawl catches: Implications for monitoring the fishes of Lake Superior
An annual daytime bottom trawl survey of the Lake Superior fish community designed in 1978 does not adequately assess the entire community. Whereas recent studies have recommended that pelagic species be surveyed with a combination of acoustic and midwater trawling methods (AC-MT), we used bottom trawling to study the effects of depth, diel period, and season on biomass estimates and the sizes of
Authors
D.L. Yule, J.V. Adams, J.D. Stockwell, O. T. Gorman
Vertical distribution of fish biomass in Lake Superior: Implications for day bottom trawl surveys
Evaluation of the biases in sampling methodology is essential for understanding the limitations of abundance and biomass estimates of fish populations. Estimates from surveys that rely solely on bottom trawls may be particularly vulnerable to bias if pelagic fish are numerous. We evaluated the variability in the vertical distribution of fish biomass during the U.S. Geological Survey's annual sprin
Authors
J.D. Stockwell, D.L. Yule, T.R. Hrabik, J.V. Adams, O. T. Gorman, B.V. Holbrook
Using multiple gears to assess acoustic detectability and biomass of fish species in lake superior
Recent predator demand and prey supply studies suggest that an annual daytime bottom trawl survey of Lake Superior underestimates prey fish biomass. A multiple-gear (acoustics, bottom trawl, and midwater trawl) nighttime survey has been recommended, but before abandoning a long-term daytime survey the effectiveness of night sampling of important prey species must be verified. We sampled three bott
Authors
D.L. Yule, J.V. Adams, J.D. Stockwell, O. T. Gorman
Temporal trends of young-of-year fishes in Lake Erie and comparison of diel sampling periods
We explored temporal trends of young-of-year (YOY) fishes caught in bottom trawl hauls at an established offshore monitoring site in Lake Erie in fall during 1961–2001. Sampling was conducted during morning, afternoon, and night in each year. Catches per hour (CPH) of alewife (Alosa pseudoharengus) YOY were relatively low and exhibited no temporal trend. This result was consistent with the species
Authors
M.A. Stapanian, M.T. Bur, J.V. Adams
Shell-free biomass and population dynamics of dreissenids in offshore Lake Michigan, 2001-2003
The USGS-Great Lakes Science Center has collected dreissenid mussels annually from Lake Michigan since zebra mussels (Dreissena polymorpha) became a significant portion of the bottom-trawl catch in 1999. For this study, we investigated dreissenid distribution, body mass, and recruitment at different depths in Lake Michigan during 2001-2003. The highest densities of dreissenid biomass were observed
Authors
J. R. P. French, J.V. Adams, J. Craig, R.G. Stickel, S. J. Nichols, G.W. Fleischer
Improving the design of acoustic and midwater trawl surveys through stratification, with an application to Lake Michigan prey fishes
Reliable estimates of fish biomass are vital to the management of aquatic ecosystems and their associated fisheries. Acoustic and midwater trawl surveys are an efficient sampling method for estimating fish biomass in large bodies of water. To improve the precision of biomass estimates from combined acoustic and midwater trawl surveys, sampling effort should be optimally allocated within each stage
Authors
J.V. Adams, R.L. Argyle, G.W. Fleischer, G.L. Curtis, R.G. Stickel
Effects of selected polybrominated diphenyl ether flame retardants on lake trout (Salvelinus namaycush) thymocyte viability, apoptosis, and necrosis
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 teste
Authors
Kelly L. Birchmeier, Kimberly A. Smith, Dora R. Passino-Reader, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Geneva M. Omann
Embryonic developmental progression in lake trout (Salvelinus namaycush) (Walbaum, 1792) and its relation to lake temperature
Developmental progression of lake trout (Salvelinus namaycush) embryos was examined with light and scanning electron microscopy. From this examination, key developmental stages were described in detail. The key developmental stages were then applied to individual lake trout egg lots incubated in constant temperatures of 2, 4, 6, 8, and 10°C. We used Belehradek's, Thermodynamic, and Power models, a
Authors
Jeffrey D. Allen, Glenn K. Walker, Jean V. Adams, S. Jerrine Nichols, Carol C. Edsall
Modeling the suppression of sea lamprey populations by use of the male sex pheromone
The suppression of sea lamprey populations, Petromyzon marinus (Linnaeus), was modeled using four different applications of the male sex pheromone: (1) pheromone-baited traps that remove females from the spawning population, (2) pheromone-baited decoys that exhaust females before they are able to spawn, (3) pheromone-enhanced sterile males that increase the proportion of non-fertile matings, and (
Authors
Waldemar Klassen, Jean V. Adams, Michael B. Twohey
Occurrence of Cyathocephalus truncatus (Cestoda) in fishes of the Great Lakes with emphasis on its occurrence in round gobies (Neogobius melanostomus) from Lake Huron
Cyathocephalus truncatus is a pathogenic cestode that is common in many Laurentian Great Lakes fish species, but the depth distribution of this cestode has not been studied. Cyathocephalus truncatus has been reported from 21 fish species and one hybrid representing seven orders and nine families in Lakes Superior, Michigan, Huron, and Ontario. We examined the intestinal contents of six species of
Authors
John R. P. French, Patrick M. Muzzall, Jean V. Adams, Kendra L. Johnson, Angela E. Flores, Andrea M. Winkel
Modeling the suppression of sea lamprey populations by the release of sterile males or sterile females
The suppressive effects of trapping adult sea lampreys, Petromyzon marinus Linnaeus, and releasing sterile males (SMRT) or females (SFRT) into a closed system were expressed in deterministic models. Suppression was modeled as a function of the proportion of the population removed by trapping, the number of sterile animals released, the reproductive rate and sex ratio of the population, and (for th
Authors
Waldemar Klassen, Jean V. Adams, Michael B. Twohey
Comparison of spring measures of length, weight, and condition factor for predicting metamorphosis in two populations of sea lampreys (Petromyzon marinus) larvae
The ability to predict when sea lampreys (Petromyzon marinus) will metamorphose from the larval phase to the parasitic phase is essential to the operation of the sea lamprey control program. During the spring of 1994, two populations of sea lamprey larvae from two rivers were captured, measured, weighed, implanted with coded wire tags, and returned to the same sites in the streams from which they
Authors
Mary P. Henson, Roger A. Bergstedt, Jean V. Adams