Christine Custer
Christine Custer
Science and Products
Filter Total Items: 93
Mercury and other element exposure to tree swallows (Tachycineta bicolor) nesting on Lostwood National Wildlife Refuge, North Dakota Mercury and other element exposure to tree swallows (Tachycineta bicolor) nesting on Lostwood National Wildlife Refuge, North Dakota
Elevated mercury concentrations in water were reported in the prairie wetlands at Lostwood National Wildlife Refuge, ND. In order to determine whether wildlife associated with these wetlands was exposed to and then accumulated higher mercury concentrations than wildlife living near more permanent wetlands (e.g. lakes), tree swallow (Tachycineta bicolor) eggs and nestlings were collected...
Authors
T. W. Custer, Christine M. Custer, K. M. Johnson, D. J. Hoffman
Corticosterone stress response in tree swallows nesting near polychlorinated biphenyl- and dioxin-contaminated rivers Corticosterone stress response in tree swallows nesting near polychlorinated biphenyl- and dioxin-contaminated rivers
We assayed baseline and stress-induced corticosterone concentrations from adult female and nestling tree swallows, Tachycineta bicolor, from New England, USA, sites with different levels of contamination with polychlorinated biphenyls (PCBs) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Corticosterone was compared over 2 years from a highly contaminated PCB site along the Housatonic...
Authors
M.D. Franceschini, Christine M. Custer, T. W. Custer, J.M. Reed, L.M. Romero
Water level management and contaminant exposure to tree swallows nesting on the Upper Mississippi River Water level management and contaminant exposure to tree swallows nesting on the Upper Mississippi River
The U.S. Army Corps of Engineers conducted a water drawdown on Navigation Pool 8 of the Upper Mississippi River during the summers of 2001 and 2002 to increase aquatic vegetation production and thereby improve fish and wildlife habitat. Flooding of previously dried wetlands, however, may increase the rate of mercury methylation and make mercury more available to terrestrial vertebrates...
Authors
T. W. Custer, P.M. Dummer, Christine M. Custer, A.U. Li, D. Warburton, M. J. Melancon, D. J. Hoffman, C. W. Matson, J. W. Bickham
Adult tree swallow (Tachycineta bicolor) survival on the polychlorinated biphenyl-contaminated Housatonic River, Massachusetts, USA Adult tree swallow (Tachycineta bicolor) survival on the polychlorinated biphenyl-contaminated Housatonic River, Massachusetts, USA
Tree swallows (Tachycineta bicolor) were captured and banded at six sites that differed in polychlorinated biphenyl (PCB) contamination levels in the Housatonic River watershed, western Massachusetts, USA, from 2000 through 2004 to test the prediction that apparent survival rates of females in more contaminated areas were lower than those from less contaminated areas. We also tested...
Authors
Christine M. Custer, T. W. Custer, J.E. Hines, J.D. Nichols, P.M. Dummer
Relationships of cadmium, mercury, and selenium with nutrient reserves of female lesser scaup (Aythya affinis) during winter and spring migration Relationships of cadmium, mercury, and selenium with nutrient reserves of female lesser scaup (Aythya affinis) during winter and spring migration
Trace elements may have important effects on body condition of ducks during spring migration, because individuals are experiencing energetically costly events (e.g., migration, nutrient reserve accumulation, pair formation, feather molt, and ovarian follicle development). We examined relationships among hepatic cadmium, mercury, and selenium concentrations (microg/g dry wt) and nutrient...
Authors
M.J. Anteau, A. D. Afton, Christine M. Custer, T. W. Custer
Mercury exposure and effects on cavity-nesting birds from the Carson River, Nevada Mercury exposure and effects on cavity-nesting birds from the Carson River, Nevada
Mercury (Hg) concentrations were 15-40 times higher in the eggs and livers of tree swallows (Tachycineta bicolor) and house wrens (Troglodytes aedon) that nested along the Carson River at and below Dayton, Nevada than in the same species above the mining-impacted areas. Hg contamination was mainly the result of processing mills in the 1800s that used Hg to separate gold and silver from...
Authors
Christine M. Custer, T. W. Custer, E. F. Hill
Science and Products
Filter Total Items: 93
Mercury and other element exposure to tree swallows (Tachycineta bicolor) nesting on Lostwood National Wildlife Refuge, North Dakota Mercury and other element exposure to tree swallows (Tachycineta bicolor) nesting on Lostwood National Wildlife Refuge, North Dakota
Elevated mercury concentrations in water were reported in the prairie wetlands at Lostwood National Wildlife Refuge, ND. In order to determine whether wildlife associated with these wetlands was exposed to and then accumulated higher mercury concentrations than wildlife living near more permanent wetlands (e.g. lakes), tree swallow (Tachycineta bicolor) eggs and nestlings were collected...
Authors
T. W. Custer, Christine M. Custer, K. M. Johnson, D. J. Hoffman
Corticosterone stress response in tree swallows nesting near polychlorinated biphenyl- and dioxin-contaminated rivers Corticosterone stress response in tree swallows nesting near polychlorinated biphenyl- and dioxin-contaminated rivers
We assayed baseline and stress-induced corticosterone concentrations from adult female and nestling tree swallows, Tachycineta bicolor, from New England, USA, sites with different levels of contamination with polychlorinated biphenyls (PCBs) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Corticosterone was compared over 2 years from a highly contaminated PCB site along the Housatonic...
Authors
M.D. Franceschini, Christine M. Custer, T. W. Custer, J.M. Reed, L.M. Romero
Water level management and contaminant exposure to tree swallows nesting on the Upper Mississippi River Water level management and contaminant exposure to tree swallows nesting on the Upper Mississippi River
The U.S. Army Corps of Engineers conducted a water drawdown on Navigation Pool 8 of the Upper Mississippi River during the summers of 2001 and 2002 to increase aquatic vegetation production and thereby improve fish and wildlife habitat. Flooding of previously dried wetlands, however, may increase the rate of mercury methylation and make mercury more available to terrestrial vertebrates...
Authors
T. W. Custer, P.M. Dummer, Christine M. Custer, A.U. Li, D. Warburton, M. J. Melancon, D. J. Hoffman, C. W. Matson, J. W. Bickham
Adult tree swallow (Tachycineta bicolor) survival on the polychlorinated biphenyl-contaminated Housatonic River, Massachusetts, USA Adult tree swallow (Tachycineta bicolor) survival on the polychlorinated biphenyl-contaminated Housatonic River, Massachusetts, USA
Tree swallows (Tachycineta bicolor) were captured and banded at six sites that differed in polychlorinated biphenyl (PCB) contamination levels in the Housatonic River watershed, western Massachusetts, USA, from 2000 through 2004 to test the prediction that apparent survival rates of females in more contaminated areas were lower than those from less contaminated areas. We also tested...
Authors
Christine M. Custer, T. W. Custer, J.E. Hines, J.D. Nichols, P.M. Dummer
Relationships of cadmium, mercury, and selenium with nutrient reserves of female lesser scaup (Aythya affinis) during winter and spring migration Relationships of cadmium, mercury, and selenium with nutrient reserves of female lesser scaup (Aythya affinis) during winter and spring migration
Trace elements may have important effects on body condition of ducks during spring migration, because individuals are experiencing energetically costly events (e.g., migration, nutrient reserve accumulation, pair formation, feather molt, and ovarian follicle development). We examined relationships among hepatic cadmium, mercury, and selenium concentrations (microg/g dry wt) and nutrient...
Authors
M.J. Anteau, A. D. Afton, Christine M. Custer, T. W. Custer
Mercury exposure and effects on cavity-nesting birds from the Carson River, Nevada Mercury exposure and effects on cavity-nesting birds from the Carson River, Nevada
Mercury (Hg) concentrations were 15-40 times higher in the eggs and livers of tree swallows (Tachycineta bicolor) and house wrens (Troglodytes aedon) that nested along the Carson River at and below Dayton, Nevada than in the same species above the mining-impacted areas. Hg contamination was mainly the result of processing mills in the 1800s that used Hg to separate gold and silver from...
Authors
Christine M. Custer, T. W. Custer, E. F. Hill