Effects of rapid changes in temperature on two estuarine crustaceans |
| |
Authors: | Dennis T. Burton Thomas P. Capizzi Stuart L. Margrey W. Waldo Wakefield |
| |
Affiliation: | Academy of Natural Sciences of Philadelphia, Benedict Estuarine Research Laboratory, Benedict, Maryland 20612, USA |
| |
Abstract: | Weight specific oxygen consumption (QO2) patterns of the amphipod, Gammarus sp. (acclimated to 5°, 15° and 25°C) and of juvenile blue crabs, Callinectes sapidus (15° and 25°C) were used to evaluate the potential effect of exposure to rapid temperature changes simulating once-through power plant pumped entrainment. Amphipods at all acclimation temperatures and blue crabs at 15°C responded to the temperature changes by increasing QO2 above pre-exposure levels after the thermal increase and then returning to pre-exposure levels. The response was judged to be a normal physiological compensation response, not a thermal stress response, as suggested by some investigators. Significant differences were found among seasonal QO2, patterns in both species; QO2, increased with increasing acclimation temperature. However, no seasonal stress effects were found as a result of exposure to the temperature changes. This implies that the effects of ΔT's up to 10°C from power plants of this design should have no significant impact on these organisms. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|