Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Thermal Shock Effects On Larvae Of Caddis Fly Brachycentrus Americanus, Jack A. Salmela, Richard L. Anderson
Thermal Shock Effects On Larvae Of Caddis Fly Brachycentrus Americanus, Jack A. Salmela, Richard L. Anderson
Journal of the Minnesota Academy of Science
Wild-collected Brachycentrus americanus larvae were subjected to thermal shocks of 30-minute and 60-minute duration in June, September, and December of 1976. Temperatures at collection were 14.7 , 10.4 , and 1.2 C, respectively. The TL50's for both 30-minute and 60-minute shock durations ranged from 33.3 C to 34.0 C for each month, except for a 30-minute exposure in September, which had a TL 50 of 34.6 C. Larvae from a December exposure were held for 16 days to observe postexposure behavior. Feeding was reduced 50 percent among specimens exposed to temperatures 1.2 C below the 30-minute TL 50 and 3.6 …