John B. French, Jr., Ph.D. (Former Employee)
Science and Products
Filter Total Items: 30
Effects of pre- and postnatal polychlorinated biphenyl exposure on metabolic rate and thyroid hormones of white-footed mice Effects of pre- and postnatal polychlorinated biphenyl exposure on metabolic rate and thyroid hormones of white-footed mice
Energy budgets have proven to be a valuable tool for predicting life history from physiological data in terrestrial vertebrates, yet these concepts have not been applied to the physiological effects of contaminants. Contaminants might affect energy budgets by imposing an additional metabolic cost or by reducing the overall amount of energy taken in; either process will reduce the energy...
Authors
J.B. French, M.B. Voltura, T.E. Tomasi
Maternal steroids and contaminants in common tern eggs: A mechanism of endocrine disruption? Maternal steroids and contaminants in common tern eggs: A mechanism of endocrine disruption?
We looked for evidence for the hypothesis that exposure of female birds to polychlorinated biphenyls (PCBs) results in alteration of blood steroid hormone concentrations and alters subsequent hormone transfer of steroids to eggs. Eggs of three-egg clutches were collected from a PCB-exposed common tern (Sterna hirundo) colony (Ram Island, Buzzards Bay, MA, USA) and from a relatively clean...
Authors
J.B. French, I.C.T. Nisbet, H. Schwabl
Effects of dietary polychlorinated biphenyl exposure on energetics of white-footed mouse, Peromyscus leucopus Effects of dietary polychlorinated biphenyl exposure on energetics of white-footed mouse, Peromyscus leucopus
Energy budgets have provided physiological ecologists with a vital link between environmental variables and individual performance and should also prove useful to ecotoxicologists in understanding the effects of sublethal exposure in the field. Exposure to toxic compounds is likely to be metabolically expensive and may result in a trade-off between energy spent to detoxify and excrete...
Authors
M.B. Voltura, J.B. French
Group A discussions of endpoint selection, study design, and extrapolation Group A discussions of endpoint selection, study design, and extrapolation
No abstract available.
Authors
J.B. French, S.P. Bradbury, H. Krueger, E. McGee, Bradley E. Sample
Evaluation of the immunological and hematological effects of chronic exposure of adult Peromyscus leucopus to Aroclor 1254 at concentrations equivalent to those at contaminated sites Evaluation of the immunological and hematological effects of chronic exposure of adult Peromyscus leucopus to Aroclor 1254 at concentrations equivalent to those at contaminated sites
Polychlorinated biphenyls are known to cause adverse health effects to biological systems; however, limited data is available on their effects on the immune system of wild species. Previous work by our lab found that 4 and 6-week old white-footed mice (Perornyscus leucopus) born from dams injected with a single dose (300 mg/kg) of Aroclor 1254, had altered immunological, hematological...
Authors
S.R. Arena, M. Segre, J.B. French
Energetic cost of dietary exposure to polychlorinated biphenyls (PCBS) for white-footed mice, Peromyscus leucopus Energetic cost of dietary exposure to polychlorinated biphenyls (PCBS) for white-footed mice, Peromyscus leucopus
No abstract available.
Authors
M.B. Voltura, J.B. French
Science and Products
Filter Total Items: 30
Effects of pre- and postnatal polychlorinated biphenyl exposure on metabolic rate and thyroid hormones of white-footed mice Effects of pre- and postnatal polychlorinated biphenyl exposure on metabolic rate and thyroid hormones of white-footed mice
Energy budgets have proven to be a valuable tool for predicting life history from physiological data in terrestrial vertebrates, yet these concepts have not been applied to the physiological effects of contaminants. Contaminants might affect energy budgets by imposing an additional metabolic cost or by reducing the overall amount of energy taken in; either process will reduce the energy...
Authors
J.B. French, M.B. Voltura, T.E. Tomasi
Maternal steroids and contaminants in common tern eggs: A mechanism of endocrine disruption? Maternal steroids and contaminants in common tern eggs: A mechanism of endocrine disruption?
We looked for evidence for the hypothesis that exposure of female birds to polychlorinated biphenyls (PCBs) results in alteration of blood steroid hormone concentrations and alters subsequent hormone transfer of steroids to eggs. Eggs of three-egg clutches were collected from a PCB-exposed common tern (Sterna hirundo) colony (Ram Island, Buzzards Bay, MA, USA) and from a relatively clean...
Authors
J.B. French, I.C.T. Nisbet, H. Schwabl
Effects of dietary polychlorinated biphenyl exposure on energetics of white-footed mouse, Peromyscus leucopus Effects of dietary polychlorinated biphenyl exposure on energetics of white-footed mouse, Peromyscus leucopus
Energy budgets have provided physiological ecologists with a vital link between environmental variables and individual performance and should also prove useful to ecotoxicologists in understanding the effects of sublethal exposure in the field. Exposure to toxic compounds is likely to be metabolically expensive and may result in a trade-off between energy spent to detoxify and excrete...
Authors
M.B. Voltura, J.B. French
Group A discussions of endpoint selection, study design, and extrapolation Group A discussions of endpoint selection, study design, and extrapolation
No abstract available.
Authors
J.B. French, S.P. Bradbury, H. Krueger, E. McGee, Bradley E. Sample
Evaluation of the immunological and hematological effects of chronic exposure of adult Peromyscus leucopus to Aroclor 1254 at concentrations equivalent to those at contaminated sites Evaluation of the immunological and hematological effects of chronic exposure of adult Peromyscus leucopus to Aroclor 1254 at concentrations equivalent to those at contaminated sites
Polychlorinated biphenyls are known to cause adverse health effects to biological systems; however, limited data is available on their effects on the immune system of wild species. Previous work by our lab found that 4 and 6-week old white-footed mice (Perornyscus leucopus) born from dams injected with a single dose (300 mg/kg) of Aroclor 1254, had altered immunological, hematological...
Authors
S.R. Arena, M. Segre, J.B. French
Energetic cost of dietary exposure to polychlorinated biphenyls (PCBS) for white-footed mice, Peromyscus leucopus Energetic cost of dietary exposure to polychlorinated biphenyls (PCBS) for white-footed mice, Peromyscus leucopus
No abstract available.
Authors
M.B. Voltura, J.B. French