Jean V Adams, PhD (Former Employee)
Science and Products
Filter Total Items: 79
Annual production of burrowing mayfly nymphs (Hexagenia spp.) in U.S. waters of Lake St. Clair
Burrowing mayfly nymphs (Hexagenia spp.) were sampled monthly, September through October 1995 and April through August 1996, with a standard Ponar grab (538 cm2 jaw opening) at 16 stations in U.S. waters of Lake St. Clair. Annual production (production, P) was 0 to 477 mg dry weight/m2 at three stations where pollution and sediment grain-size distribution limited the population, and was 738 to 5,2
Authors
Thomas A. Edsall, Robert C. Haas, Jean V. Adams
The fish community of a small impoundment in upstate New York
Moe Pond is a dimictic impoundment with surface area of 15.6 ha, a mean depth of 1.8 m, and an unexploited fish community of only two species: brown bullhead (Ameiurus nebulosus) and golden shiner (Notemigonus crysoleucas). The age-1 and older brown bullhead population was estimated to be 4,057 individuals, based on the Schnabel capture-recapture method of population estimation. Density and biomas
Authors
C. Mead McCoy, Charles P. Madenjian, Jean V. Adams, Willard N. Harman
Vateritic sagitta in wild and stocked lake trout: Applicability to stock origin
Aragonite is the normal form of calcium carbonate found in teleost otoliths, but it is sometimes replaced by vaterite, an alternate crystalline structure. We investigated the assumption that sagittal otoliths with vaterite replacement were unique to stocked lake trout Salvelinus namaycush in the Laurentian Great Lakes. Earlier studies had attributed these abnormalities to stocking stress, and prop
Authors
Charles A. Bowen, Charles R. Bronte, Ray L. Argyle, Jean V. Adams, James E. Johnson
The effect of temperature and ration size on the growth, body composition, and energy content of juvenile coho salmon
Juvenile (postsmolt) coho salmon (Oncorhynchus kitsuch) were held in fresh water in the laboratory at 5, 10, 15, and 18A?C for 8 weeks and fed freshly thawed, juvenile alewives (Alosa pseudoharengus) at rates equal to 1 and 2 % of their wet body weight/day, and also at the ad libitum or unrestricted ration rate. Most rapid growth in weight (1.2% wet body weight/day) occurred among fish fed the ad
Authors
Thomas A. Edsall, Anthony M. Frank, Donald V. Rottiers, Jean V. Adams
Seasonal migration and homing of channel catfish in the lower Wisconsin River, Wisconsin
A multiyear tag and recapture study was conducted to determine whether channel catfishIctalurus punctatus were migratory and if they had strong homing tendencies. Over 10,000 channel catfish were tagged from the lower Wisconsin River and adjacent waters of the upper Mississippi River during the 3-year sampling period. Data on movements were obtained from study recaptures and through tag returns an
Authors
Thomas D. Pellett, Gene J. Van Dyck, Jean V. Adams
Sieve efficiency in benthic sampling as related to chironomid head capsule width
The width of the head capsule in chironomid larvae is the most important morphometric character controlling retention of specimens in sieving devices. Knowledge of the range in size of these widths within any chironomid community is fundamental to sampling and interpreting the resulting data. We present the head capsule widths of 30 species of chironomids and relate their size distribution to loss
Authors
Patrick L. Hudson, Jean V. Adams
Assessing prey fish populations in Lake Michigan: Comparison of simultaneous acoustic-midwater trawling with bottom trawling
The Lake Michigan fish community has been monitored since the 1960s with bottom trawls, and since the late 1980s with acoustics and midwater trawls. These sampling tools are limited to different habitats: bottom trawls sample fish near bottom in areas with smooth substrates, and acoustic methods sample fish throughout the water column above all substrate types. We compared estimates of fish dens
Authors
Mary C. Fabrizio, Jean V. Adams, Gary L. Curtis
Science and Products
Filter Total Items: 79
Annual production of burrowing mayfly nymphs (Hexagenia spp.) in U.S. waters of Lake St. Clair
Burrowing mayfly nymphs (Hexagenia spp.) were sampled monthly, September through October 1995 and April through August 1996, with a standard Ponar grab (538 cm2 jaw opening) at 16 stations in U.S. waters of Lake St. Clair. Annual production (production, P) was 0 to 477 mg dry weight/m2 at three stations where pollution and sediment grain-size distribution limited the population, and was 738 to 5,2
Authors
Thomas A. Edsall, Robert C. Haas, Jean V. Adams
The fish community of a small impoundment in upstate New York
Moe Pond is a dimictic impoundment with surface area of 15.6 ha, a mean depth of 1.8 m, and an unexploited fish community of only two species: brown bullhead (Ameiurus nebulosus) and golden shiner (Notemigonus crysoleucas). The age-1 and older brown bullhead population was estimated to be 4,057 individuals, based on the Schnabel capture-recapture method of population estimation. Density and biomas
Authors
C. Mead McCoy, Charles P. Madenjian, Jean V. Adams, Willard N. Harman
Vateritic sagitta in wild and stocked lake trout: Applicability to stock origin
Aragonite is the normal form of calcium carbonate found in teleost otoliths, but it is sometimes replaced by vaterite, an alternate crystalline structure. We investigated the assumption that sagittal otoliths with vaterite replacement were unique to stocked lake trout Salvelinus namaycush in the Laurentian Great Lakes. Earlier studies had attributed these abnormalities to stocking stress, and prop
Authors
Charles A. Bowen, Charles R. Bronte, Ray L. Argyle, Jean V. Adams, James E. Johnson
The effect of temperature and ration size on the growth, body composition, and energy content of juvenile coho salmon
Juvenile (postsmolt) coho salmon (Oncorhynchus kitsuch) were held in fresh water in the laboratory at 5, 10, 15, and 18A?C for 8 weeks and fed freshly thawed, juvenile alewives (Alosa pseudoharengus) at rates equal to 1 and 2 % of their wet body weight/day, and also at the ad libitum or unrestricted ration rate. Most rapid growth in weight (1.2% wet body weight/day) occurred among fish fed the ad
Authors
Thomas A. Edsall, Anthony M. Frank, Donald V. Rottiers, Jean V. Adams
Seasonal migration and homing of channel catfish in the lower Wisconsin River, Wisconsin
A multiyear tag and recapture study was conducted to determine whether channel catfishIctalurus punctatus were migratory and if they had strong homing tendencies. Over 10,000 channel catfish were tagged from the lower Wisconsin River and adjacent waters of the upper Mississippi River during the 3-year sampling period. Data on movements were obtained from study recaptures and through tag returns an
Authors
Thomas D. Pellett, Gene J. Van Dyck, Jean V. Adams
Sieve efficiency in benthic sampling as related to chironomid head capsule width
The width of the head capsule in chironomid larvae is the most important morphometric character controlling retention of specimens in sieving devices. Knowledge of the range in size of these widths within any chironomid community is fundamental to sampling and interpreting the resulting data. We present the head capsule widths of 30 species of chironomids and relate their size distribution to loss
Authors
Patrick L. Hudson, Jean V. Adams
Assessing prey fish populations in Lake Michigan: Comparison of simultaneous acoustic-midwater trawling with bottom trawling
The Lake Michigan fish community has been monitored since the 1960s with bottom trawls, and since the late 1980s with acoustics and midwater trawls. These sampling tools are limited to different habitats: bottom trawls sample fish near bottom in areas with smooth substrates, and acoustic methods sample fish throughout the water column above all substrate types. We compared estimates of fish dens
Authors
Mary C. Fabrizio, Jean V. Adams, Gary L. Curtis