Dora R Reader (Former Employee)
Science and Products
Publications by this scientist
Filter Total Items: 33
Toxicity of arsenate and DDT to the cladoceran Bosmina longirostris
No abstract available.
Authors
Dora R. May Passino, Alexander J. Novak
New continuous-flow bioassay technique using small crustaceans
No abstract available.
Authors
Alexander J. Novak, Duane F. Berry, Beverly S. Walters, Dora R. May Passino
Subcellular distribution of mercury in liver of lake trout (Salvelinus namaycush)
Mercury was found primarily (80%) in the submicroscopic material (magnification x < 7700) of environmentally exposed adult lake trout from Lake Michigan, USA.
Authors
D.R. May Passino, J. Matsumoto Kramer
Biochemistry and metabolism of lake trout: laboratory and field studies on the effects of contaminants
To evaluate the effects of ambient and higher concentrations of PCB's (Aroclor 1254) and DDE in food and water on fry of lake trout (Salvelinus namaycush) from Lake Michigan, I measured several biochemical indicators of stress in exposed and unexposed (control) fry. No differences between treatments were observed in oxygen consumption rates or lactate concentrations of unexercised fry...
Authors
Dora R. May Passino
Introduction and summary: Chlorinated hydrocarbons as a factor in the reproduction and survival of lake trout (Salvelinus namaycush) in Lake Michigan
Although lake trout (Salvelinus namaycush) were considered extinct in Lake Michigan by the mid 1950's, control of the parasitic sea lamprey (Petromyzon marinus) and extensive restocking resulted in an abundance of hatchery-produced lake trout in the lake by the early 1970's. However, no naturally produced yearling or older lake trout have been found in the lake during nearly a decade of...
Authors
Wayne A. Willford, Roger A. Bergstedt, William H. Berlin, Neal R. Foster, Robert J. Hesselberg, Michael J. Mac, Dora R. May Passino, Robert E. Reinert, Donald V. Rottiers
Enzymes and other biochemical indicators of toxicant effects in fishes
No abstract available.
Authors
Dora R. May Passino
Toxicity of arsenic and PCBs to fry of deepwater ciscoes (Coregonus)
No abstract available.
Authors
Dora R. May Passino, Janet Matsumoto Kramer
Allantoinase in lake trout (Salvelinus namaycush): In vitro effects of PCBs, DDT and metals
1. Allantoinase, an enzyme in the purine-urea cycle, was found in livers of Salvelinus namaycush (Osteichthyes: Salmoniformes).2. The enzyme was active from pH 6.6 to 8.2 at 37°C and from pH 7.4 to 9.0 at 10°C and had an Arrhenius energy was activation of 11.0 kcal/mol and a temperature quotient of 2.0. The Km of the enzyme homogenate was 8.4 mM allantoin.3. The concentrations of...
Authors
Dora R. May Passino, Carol A. Cotant
Allantoinase in the marine polychaete Eudistylia vancouveri
Allantoinase, an enzyme in the purine-urea cycle, was found in Eudistylia vancouveri (Polychaeta). The enzyme had a pH optimum at 7.6. The Km was 0.012 M allantoin, and the Arrhenius energy of activation was 12.6 to 14.6 kcal/mol.
Authors
Dora R. May Passino, G.W. Brown
Science and Products
Publications by this scientist
Filter Total Items: 33
Toxicity of arsenate and DDT to the cladoceran Bosmina longirostris
No abstract available.
Authors
Dora R. May Passino, Alexander J. Novak
New continuous-flow bioassay technique using small crustaceans
No abstract available.
Authors
Alexander J. Novak, Duane F. Berry, Beverly S. Walters, Dora R. May Passino
Subcellular distribution of mercury in liver of lake trout (Salvelinus namaycush)
Mercury was found primarily (80%) in the submicroscopic material (magnification x < 7700) of environmentally exposed adult lake trout from Lake Michigan, USA.
Authors
D.R. May Passino, J. Matsumoto Kramer
Biochemistry and metabolism of lake trout: laboratory and field studies on the effects of contaminants
To evaluate the effects of ambient and higher concentrations of PCB's (Aroclor 1254) and DDE in food and water on fry of lake trout (Salvelinus namaycush) from Lake Michigan, I measured several biochemical indicators of stress in exposed and unexposed (control) fry. No differences between treatments were observed in oxygen consumption rates or lactate concentrations of unexercised fry...
Authors
Dora R. May Passino
Introduction and summary: Chlorinated hydrocarbons as a factor in the reproduction and survival of lake trout (Salvelinus namaycush) in Lake Michigan
Although lake trout (Salvelinus namaycush) were considered extinct in Lake Michigan by the mid 1950's, control of the parasitic sea lamprey (Petromyzon marinus) and extensive restocking resulted in an abundance of hatchery-produced lake trout in the lake by the early 1970's. However, no naturally produced yearling or older lake trout have been found in the lake during nearly a decade of...
Authors
Wayne A. Willford, Roger A. Bergstedt, William H. Berlin, Neal R. Foster, Robert J. Hesselberg, Michael J. Mac, Dora R. May Passino, Robert E. Reinert, Donald V. Rottiers
Enzymes and other biochemical indicators of toxicant effects in fishes
No abstract available.
Authors
Dora R. May Passino
Toxicity of arsenic and PCBs to fry of deepwater ciscoes (Coregonus)
No abstract available.
Authors
Dora R. May Passino, Janet Matsumoto Kramer
Allantoinase in lake trout (Salvelinus namaycush): In vitro effects of PCBs, DDT and metals
1. Allantoinase, an enzyme in the purine-urea cycle, was found in livers of Salvelinus namaycush (Osteichthyes: Salmoniformes).2. The enzyme was active from pH 6.6 to 8.2 at 37°C and from pH 7.4 to 9.0 at 10°C and had an Arrhenius energy was activation of 11.0 kcal/mol and a temperature quotient of 2.0. The Km of the enzyme homogenate was 8.4 mM allantoin.3. The concentrations of...
Authors
Dora R. May Passino, Carol A. Cotant
Allantoinase in the marine polychaete Eudistylia vancouveri
Allantoinase, an enzyme in the purine-urea cycle, was found in Eudistylia vancouveri (Polychaeta). The enzyme had a pH optimum at 7.6. The Km was 0.012 M allantoin, and the Arrhenius energy of activation was 12.6 to 14.6 kcal/mol.
Authors
Dora R. May Passino, G.W. Brown