Dehydration in Southern Toads (Anaxyrus terrestris): Metabolic Costs and Effects of Temperature Selection
نویسندگان
چکیده
................................................................................................ 2 Introduction ........................................................................................... 2 Methods and Materials.......................................................................... 5 Experimental Animals ...................................................................................................5 Preparation for Metabolic Rate and Thermal Gradient Experiments ............................5 Metabolic Rate Experiment ...........................................................................................7 Thermal Gradient Experiment .......................................................................................8 Statistics .......................................................................................................................10 Results ................................................................................................. 10 Discussion ........................................................................................... 12 Literature Cited ................................................................................... 18
منابع مشابه
Metabolic measures of male southern toads (Bufo terrestris) exposed to coal combustion waste.
Southern toads (Bufo terrestris) are found in coal fly ash collection basins associated with coal-burning electrical power plants. These basins contain large amounts of trace metals and organisms found in these basins are known to accumulate large quantities of metals. Studies on a variety of organisms exposed to trace metals found that they experience a significant increase in standard metabol...
متن کاملFailed recruitment of southern toads (Bufo terrestris) in a trace element-contaminated breeding habitat: direct and indirect effects that may lead to a local population sink.
We conducted a transplant study in which embryonic southern toads (Bufo terrestris) were held in a site polluted with coal ash (site AB; containing As, Cd, Cr, Cu, Se, and other elements) and a reference site (site R) through hatching and early larval development. To examine the remainder of the larval period, surviving larvae in AB were then transplanted to R and back-transplanted to AB, where...
متن کاملCharacterization and quantification of corticosteroid-binding globulin in a southern toad, Bufo terrestris, exposed to coal-combustion-waste.
Corticosteroid-binding globulin (CBG) is a plasma protein that binds corticosterone and may regulate access of hormone to tissues. The role of CBG during a stress response is not clear. At least two hypotheses have been proposed: 1) CBG levels may increase in response to a stressor, thereby decreasing the amount of circulating free corticosterone, or 2) CBG levels may decline, making corticoste...
متن کاملIncreased circulating levels of testosterone and corticosterone in southern toads, Bufo terrestris, exposed to coal combustion waste.
This study describes an interrenal stress response in adult toads, Bufo terrestris, after exposure to coal combustion waste (characterized by a variety of trace elements). In the first portion of this study, free-ranging male toads captured at the coal ash polluted site exhibited significantly higher circulating levels of corticosterone (B) in both June/July and August than conspecifics capture...
متن کاملChronic exposure to coal fly ash causes minimal changes in corticosterone and testosterone concentrations in male southern toads Bufo terrestris.
More than 50% of the electricity in the United States is produced by coal-burning power plants. The byproduct of coal-burning plants is coal fly ash, which contains increased concentrations of trace metals and is disposed of in collection basins. Southern toads (Bufo terrestris) frequently use these basins for reproduction. Male toads were collected in spring 2001 and 2002 from an ash basin and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015