Thomas Custer (Former Employee)
Science and Products
Filter Total Items: 166
Do polychlorinated biphenyls contribute to reproduction effects in fish-eating birds? Do polychlorinated biphenyls contribute to reproduction effects in fish-eating birds?
No abstract available.
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, S. Gutreuter, K. L. Stromborg, P. David Allen, M. J. Melancon
Polycyclic aromatic hydrocarbons, aliphatic hydrocarbons, trace elements and monooxygenase activity in birds nesting on the North Platte River, Casper, Wyoming, USA Polycyclic aromatic hydrocarbons, aliphatic hydrocarbons, trace elements and monooxygenase activity in birds nesting on the North Platte River, Casper, Wyoming, USA
Tree swallow (Tachycineta bicolor) and house wren (Troglodytes aedon) eggs and chicks were collected near a refinery site on the North Platte River, Casper, Wyoming, USA and at a reference site 10 km upstream. Total polycylic aromatic hydrocarbon (PAH) concentrations in swallow and wren chicks were higher at the refinery site than at the reference site. Polycylic aromatic hydrocarbon
Authors
T. W. Custer, Christine M. Custer, K. Dickerson, K. Allen, M. J. Melancon, L.J. Schmidt
Organochlorine contaminants and biomarker response in double-crested cormorants nesting in Green Bay and Lake Michigan, Wisconsin, USA Organochlorine contaminants and biomarker response in double-crested cormorants nesting in Green Bay and Lake Michigan, Wisconsin, USA
Double-crested cormorant (Phalacrocorax auritus) eggs at pipping and sibling 10-day-old chicks were collected from two colonies in Green Bay, WI, one colony in Lake Michigan, WI, and reference colonies in South Dakota and Minnesota. Egg contents and chicks were analyzed for organochlorine contaminants including polychlorinated biphenyl (PCB) congeners. Livers of embryos and chicks were...
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, K. L. Stromborg, P. David Allen, M. J. Melancon, D.S. Henshel
Cytochrome b sequences in black-crowned night-herons (Nycticorax nycticorax) from heronries exposed to genotoxic contaminants Cytochrome b sequences in black-crowned night-herons (Nycticorax nycticorax) from heronries exposed to genotoxic contaminants
DNA sequence analysis of a 215 base-pair region of the mitochondrial cytochrome b gene was used to examine genetic variation and search for evidence of an increased mutation rate in black-crowned night-herons. We examined five populations exposed to environmental contamination (primarily PAHs and PCBs) and one reference population from the eastern U.S. There was no evidence of a high...
Authors
Christopher R. Dahl, John W. Bickham, Jeffery K. Wickliffe, Thomas W. Custer
Conservation of herons Conservation of herons
Abstract not submitted to date
Authors
H. Hafner, R.V. Lansdown, J.A. Kushlan, Robert W. Butler, T. W. Custer, I.J. Davidson, R.M. Erwin, J.A. Hancock, A.M. Lyles, M. Maddock, L. Marion, G. Morales, T. Mundkur, C. Perennou, O. Pineau, D. Turner, P. Ulenaers, J. VanVessem, L. Young
Conservation of herons Conservation of herons
No abstract available.
Authors
H. Hafner, R.V. Lansdown, J.A. Kushlan, Robert W. Butler, T. W. Custer, I.J. Davidson, R.M. Erwin, J.A. Hancock, A.M. Lyles, M. Maddock, L. Marion, G. Morales, T. Mundkur, C. Perennou, O. Pineau, D. Turner, P. Ulenaers, J. van Vessem, L. Young
Environmental contaminants Environmental contaminants
Throughout the world, individuals and populations of herons are affected by environmental contaminants, leading to direct mortality, decreased reproductive success, or degradation of feeding habitat. Contaminants suspected or known to affect herons include organochlorine compounds, organophosphorus insecticides, trace elements, and petroleum (Parnell et al. 1988).General reviews on the...
Authors
T. W. Custer
Herons as indicators Herons as indicators
Abstract not submitted to date
Authors
R.M. Erwin, T. W. Custer
Trace elements, organochlorines, polycyclic aromatic hydrocarbons, dioxins, and furans in lesser scaup wintering on the Indiana Harbor Canal Trace elements, organochlorines, polycyclic aromatic hydrocarbons, dioxins, and furans in lesser scaup wintering on the Indiana Harbor Canal
During the winter of 1993a??94, male lesser scaup (Aythya affinis) were collected on the heavily polluted Indiana Harbor Canal (IHC), East Chicago, IN, USA, and examined for tissue contaminant levels. Lesser scaup collected on the IHC had higher concentrations of cadmium (Cd), mercury (Hg), selenium (Se), polychlorinated biphenyls (PCBs), selected organchlorine pesticides...
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, D. W. Sparks
Organochlorine and trace element contamination in wintering and migrating diving ducks in the southern Great Lakes, USA, since the zebra mussel invasion Organochlorine and trace element contamination in wintering and migrating diving ducks in the southern Great Lakes, USA, since the zebra mussel invasion
Because of the potential for increased trophic transfer of contaminants by zebra mussels (Dreissena sp.) to higher trophic levels, we collected four species of waterfowl (n = 65 ducks) from four locations in Lake Erie, Lake St. Clair, and Lake Michigan, USA, between 1991 and 1993 for organochlorine contaminant and trace element analyses. Geometric mean concentrations of total...
Authors
Christine M. Custer, T. W. Custer
Mixed-function oxygenases, oxidative stress, and chromosomal damage measured in lesser scaup wintering on the Indiana Harbor Canal Mixed-function oxygenases, oxidative stress, and chromosomal damage measured in lesser scaup wintering on the Indiana Harbor Canal
During the winter of 1993-1994, male lesser scaup (Aythya alfinis) were collected on the heavily polluted Indiana Harbor Canal, East Chicago, Indiana, and examined for several bioindicators of chemical exposure. Livers were analyzed for activities of three cytochrome P450-associated monooxygenases and four measures of oxidative stress. Blood and spleen were analyzed by flow cytometry for
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, D. W. Sparks, M. J. Melancon, D. J. Hoffman, J. W. Bickham, J.K. Wickliffe
Science and Products
Filter Total Items: 166
Do polychlorinated biphenyls contribute to reproduction effects in fish-eating birds? Do polychlorinated biphenyls contribute to reproduction effects in fish-eating birds?
No abstract available.
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, S. Gutreuter, K. L. Stromborg, P. David Allen, M. J. Melancon
Polycyclic aromatic hydrocarbons, aliphatic hydrocarbons, trace elements and monooxygenase activity in birds nesting on the North Platte River, Casper, Wyoming, USA Polycyclic aromatic hydrocarbons, aliphatic hydrocarbons, trace elements and monooxygenase activity in birds nesting on the North Platte River, Casper, Wyoming, USA
Tree swallow (Tachycineta bicolor) and house wren (Troglodytes aedon) eggs and chicks were collected near a refinery site on the North Platte River, Casper, Wyoming, USA and at a reference site 10 km upstream. Total polycylic aromatic hydrocarbon (PAH) concentrations in swallow and wren chicks were higher at the refinery site than at the reference site. Polycylic aromatic hydrocarbon
Authors
T. W. Custer, Christine M. Custer, K. Dickerson, K. Allen, M. J. Melancon, L.J. Schmidt
Organochlorine contaminants and biomarker response in double-crested cormorants nesting in Green Bay and Lake Michigan, Wisconsin, USA Organochlorine contaminants and biomarker response in double-crested cormorants nesting in Green Bay and Lake Michigan, Wisconsin, USA
Double-crested cormorant (Phalacrocorax auritus) eggs at pipping and sibling 10-day-old chicks were collected from two colonies in Green Bay, WI, one colony in Lake Michigan, WI, and reference colonies in South Dakota and Minnesota. Egg contents and chicks were analyzed for organochlorine contaminants including polychlorinated biphenyl (PCB) congeners. Livers of embryos and chicks were...
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, K. L. Stromborg, P. David Allen, M. J. Melancon, D.S. Henshel
Cytochrome b sequences in black-crowned night-herons (Nycticorax nycticorax) from heronries exposed to genotoxic contaminants Cytochrome b sequences in black-crowned night-herons (Nycticorax nycticorax) from heronries exposed to genotoxic contaminants
DNA sequence analysis of a 215 base-pair region of the mitochondrial cytochrome b gene was used to examine genetic variation and search for evidence of an increased mutation rate in black-crowned night-herons. We examined five populations exposed to environmental contamination (primarily PAHs and PCBs) and one reference population from the eastern U.S. There was no evidence of a high...
Authors
Christopher R. Dahl, John W. Bickham, Jeffery K. Wickliffe, Thomas W. Custer
Conservation of herons Conservation of herons
Abstract not submitted to date
Authors
H. Hafner, R.V. Lansdown, J.A. Kushlan, Robert W. Butler, T. W. Custer, I.J. Davidson, R.M. Erwin, J.A. Hancock, A.M. Lyles, M. Maddock, L. Marion, G. Morales, T. Mundkur, C. Perennou, O. Pineau, D. Turner, P. Ulenaers, J. VanVessem, L. Young
Conservation of herons Conservation of herons
No abstract available.
Authors
H. Hafner, R.V. Lansdown, J.A. Kushlan, Robert W. Butler, T. W. Custer, I.J. Davidson, R.M. Erwin, J.A. Hancock, A.M. Lyles, M. Maddock, L. Marion, G. Morales, T. Mundkur, C. Perennou, O. Pineau, D. Turner, P. Ulenaers, J. van Vessem, L. Young
Environmental contaminants Environmental contaminants
Throughout the world, individuals and populations of herons are affected by environmental contaminants, leading to direct mortality, decreased reproductive success, or degradation of feeding habitat. Contaminants suspected or known to affect herons include organochlorine compounds, organophosphorus insecticides, trace elements, and petroleum (Parnell et al. 1988).General reviews on the...
Authors
T. W. Custer
Herons as indicators Herons as indicators
Abstract not submitted to date
Authors
R.M. Erwin, T. W. Custer
Trace elements, organochlorines, polycyclic aromatic hydrocarbons, dioxins, and furans in lesser scaup wintering on the Indiana Harbor Canal Trace elements, organochlorines, polycyclic aromatic hydrocarbons, dioxins, and furans in lesser scaup wintering on the Indiana Harbor Canal
During the winter of 1993a??94, male lesser scaup (Aythya affinis) were collected on the heavily polluted Indiana Harbor Canal (IHC), East Chicago, IN, USA, and examined for tissue contaminant levels. Lesser scaup collected on the IHC had higher concentrations of cadmium (Cd), mercury (Hg), selenium (Se), polychlorinated biphenyls (PCBs), selected organchlorine pesticides...
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, D. W. Sparks
Organochlorine and trace element contamination in wintering and migrating diving ducks in the southern Great Lakes, USA, since the zebra mussel invasion Organochlorine and trace element contamination in wintering and migrating diving ducks in the southern Great Lakes, USA, since the zebra mussel invasion
Because of the potential for increased trophic transfer of contaminants by zebra mussels (Dreissena sp.) to higher trophic levels, we collected four species of waterfowl (n = 65 ducks) from four locations in Lake Erie, Lake St. Clair, and Lake Michigan, USA, between 1991 and 1993 for organochlorine contaminant and trace element analyses. Geometric mean concentrations of total...
Authors
Christine M. Custer, T. W. Custer
Mixed-function oxygenases, oxidative stress, and chromosomal damage measured in lesser scaup wintering on the Indiana Harbor Canal Mixed-function oxygenases, oxidative stress, and chromosomal damage measured in lesser scaup wintering on the Indiana Harbor Canal
During the winter of 1993-1994, male lesser scaup (Aythya alfinis) were collected on the heavily polluted Indiana Harbor Canal, East Chicago, Indiana, and examined for several bioindicators of chemical exposure. Livers were analyzed for activities of three cytochrome P450-associated monooxygenases and four measures of oxidative stress. Blood and spleen were analyzed by flow cytometry for
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, D. W. Sparks, M. J. Melancon, D. J. Hoffman, J. W. Bickham, J.K. Wickliffe