Colleen Caldwell, PhD (Former Employee)
Science and Products
Filter Total Items: 34
Physiological effects of potassium chloride, formalin and handling stress on bonytail Physiological effects of potassium chloride, formalin and handling stress on bonytail
We characterized the sublethal physiological changes in bonytail Gila elegans subjected to consecutive 750-mg/L potassium chloride (KCl) and 25-mg/L formalin treatments for the removal of zebra mussel Dreissena polymorpha and quagga mussel D. bugensis veligers. Plasma cortisol, glucose, and osmolality were measured over 24 h and at 14 d posthandling after exposing bonytail to KCl and one...
Authors
Catherine L. Sykes, Colleen A. Caldwell, William R. Gould
Assessment of exposure risk of polychlorinated biphenyls to interior least terns (Sterna antillarum) Assessment of exposure risk of polychlorinated biphenyls to interior least terns (Sterna antillarum)
Risk of polychlorinated biphenyl (PCB) exposure and effects were assessed for a colony of federally endangered interior least terns (Sterna antillarum) nesting on the Bitter Lake National Wildlife Refuge (NM, USA). The colony feeds from an area on the Refuge (Hunter Marsh/Oxbow Complex) wherein fish with elevated concentrations of total PCBs have been documented. Concentrations of total...
Authors
B.C. Sanchez, C.A. Caldwell
Relative susceptibility and effects on performance of Rio Grande cutthroat trout and rainbow trout challenged with Myxobolus cerebralis Relative susceptibility and effects on performance of Rio Grande cutthroat trout and rainbow trout challenged with Myxobolus cerebralis
We evaluated the susceptibility of Rio Grande cutthroat trout (RGCT) Oncorhynchus clarkii virginalis to infection by Myxobolus cerebralis in a laboratory experiment. In the same experiment, rainbow trout (RBT) O. mykiss were similarly exposed to M. cerebralis as a reference of known sensitivity to the parasite. Treatments consisting of six parasite concentrations (0, 50, 100, 250, 500...
Authors
R.J. DuBey, C.A. Caldwell, W.R. Gould
Concentration and dry deposition of mercury species in arid south central New Mexico (2001-2002) Concentration and dry deposition of mercury species in arid south central New Mexico (2001-2002)
This research was initiated to characterize atmospheric deposition of reactive gaseous mercury (RGM), particulate mercury (HgP;
Authors
Colleen A. Caldwell, Philip Swartzendruber, Eric Prestbo
Effects of depleted uranium on survival, growth, and metamorphosis in the african clawed frog (Xenopus laevis) Effects of depleted uranium on survival, growth, and metamorphosis in the african clawed frog (Xenopus laevis)
Embryos (stage 8-47, Nieuwkoop and Faber) of the African clawed frog (Xenopus laevis) were subjected to water-borne depleted uranium (DU) concentrations that ranged from 4.8 to 77.7 mg/Lusing an acute 96-h frog embryo teratogenesis assay-Xenopus (FETAX). In a chronic 64-d assay, X. laevis (from embryo through metamorphosis; stages 8-66) were subjected to concentrations of DU that ranged...
Authors
S.E. Mitchell, C.A. Caldwell, G. Gonzales, W.R. Gould, R. Arimoto
Seasonal changes in 17-ß estradiol of the Rio Grande Chub (Gila pandora) in south-central New Mexico Seasonal changes in 17-ß estradiol of the Rio Grande Chub (Gila pandora) in south-central New Mexico
Timing of gametogensis and thus spawning can be inferred through changes in plasma concentrations of gonadal hormones. In preparation for ovulation and spawning, mean concentrations of 17ß-estradiol in a population of Rio Grande chub (Gila pandora) occupying the Rio Bonito, New Mexico, peaked at 37.6 ng/mL on 16 June and declined to 1.50 ng/mL by 11 August. Similarly, the gonadal somatic...
Authors
Colleen A. Caldwell, S. Adam Fuller, William R. Gould, Paul R. Turner, Dennis M. Hallford
Science and Products
Filter Total Items: 34
Physiological effects of potassium chloride, formalin and handling stress on bonytail Physiological effects of potassium chloride, formalin and handling stress on bonytail
We characterized the sublethal physiological changes in bonytail Gila elegans subjected to consecutive 750-mg/L potassium chloride (KCl) and 25-mg/L formalin treatments for the removal of zebra mussel Dreissena polymorpha and quagga mussel D. bugensis veligers. Plasma cortisol, glucose, and osmolality were measured over 24 h and at 14 d posthandling after exposing bonytail to KCl and one...
Authors
Catherine L. Sykes, Colleen A. Caldwell, William R. Gould
Assessment of exposure risk of polychlorinated biphenyls to interior least terns (Sterna antillarum) Assessment of exposure risk of polychlorinated biphenyls to interior least terns (Sterna antillarum)
Risk of polychlorinated biphenyl (PCB) exposure and effects were assessed for a colony of federally endangered interior least terns (Sterna antillarum) nesting on the Bitter Lake National Wildlife Refuge (NM, USA). The colony feeds from an area on the Refuge (Hunter Marsh/Oxbow Complex) wherein fish with elevated concentrations of total PCBs have been documented. Concentrations of total...
Authors
B.C. Sanchez, C.A. Caldwell
Relative susceptibility and effects on performance of Rio Grande cutthroat trout and rainbow trout challenged with Myxobolus cerebralis Relative susceptibility and effects on performance of Rio Grande cutthroat trout and rainbow trout challenged with Myxobolus cerebralis
We evaluated the susceptibility of Rio Grande cutthroat trout (RGCT) Oncorhynchus clarkii virginalis to infection by Myxobolus cerebralis in a laboratory experiment. In the same experiment, rainbow trout (RBT) O. mykiss were similarly exposed to M. cerebralis as a reference of known sensitivity to the parasite. Treatments consisting of six parasite concentrations (0, 50, 100, 250, 500...
Authors
R.J. DuBey, C.A. Caldwell, W.R. Gould
Concentration and dry deposition of mercury species in arid south central New Mexico (2001-2002) Concentration and dry deposition of mercury species in arid south central New Mexico (2001-2002)
This research was initiated to characterize atmospheric deposition of reactive gaseous mercury (RGM), particulate mercury (HgP;
Authors
Colleen A. Caldwell, Philip Swartzendruber, Eric Prestbo
Effects of depleted uranium on survival, growth, and metamorphosis in the african clawed frog (Xenopus laevis) Effects of depleted uranium on survival, growth, and metamorphosis in the african clawed frog (Xenopus laevis)
Embryos (stage 8-47, Nieuwkoop and Faber) of the African clawed frog (Xenopus laevis) were subjected to water-borne depleted uranium (DU) concentrations that ranged from 4.8 to 77.7 mg/Lusing an acute 96-h frog embryo teratogenesis assay-Xenopus (FETAX). In a chronic 64-d assay, X. laevis (from embryo through metamorphosis; stages 8-66) were subjected to concentrations of DU that ranged...
Authors
S.E. Mitchell, C.A. Caldwell, G. Gonzales, W.R. Gould, R. Arimoto
Seasonal changes in 17-ß estradiol of the Rio Grande Chub (Gila pandora) in south-central New Mexico Seasonal changes in 17-ß estradiol of the Rio Grande Chub (Gila pandora) in south-central New Mexico
Timing of gametogensis and thus spawning can be inferred through changes in plasma concentrations of gonadal hormones. In preparation for ovulation and spawning, mean concentrations of 17ß-estradiol in a population of Rio Grande chub (Gila pandora) occupying the Rio Bonito, New Mexico, peaked at 37.6 ng/mL on 16 June and declined to 1.50 ng/mL by 11 August. Similarly, the gonadal somatic...
Authors
Colleen A. Caldwell, S. Adam Fuller, William R. Gould, Paul R. Turner, Dennis M. Hallford