Aldridge, D.W., B.S. Payne, and A.C. Miller, 1995.  Oxygen Consumption, Nitrogenous Excretion, and Filtration Rates of Dreissena polymorpha at Acclimation Temperature Between 20 and 32° C, North Carolina Agricultural and Technical State University, U.S Army Engineer Waterways Experiment Station

Reprinted from Canadian Journal of Fisheries and Aquatic Sciences 52 (8):1761-1767 (1995)

Oxygen Consumption, Nitrogenous Excretion, and Filtration Rates of Dreissena polymorpha at Acclimation Temperature Between 20 and 32° C

Abstract
Mussels were acclimated to each of four experimental temperatures (20, 24, 28, and 32°C) for 30 days. Mussels averaged 10.29 mg tissue dry weight. Oxygen consumption rates at 32°C were 3.65 times larger than consumption rates at 20°C (p < 0.01). Ammonia excretion rates at 32°C were 4.9 times greater than those at 20°C (p < 0.01). O:N ratios were >60 at 20 and 24°C but declined (p < 0.01) at 28 and 32°C to <40. Filtration rates, an estimate of feeding rates, were not significantly different at 20 and 24°C (p > 0.50) but declined at 28 and 32°C (p < 0.01). Filtration rates at 32°C were only 27% of the rates at 20°C. These results indicate that (i) the metabolic expenditure of Dreissena polymorpha rose 265% as the temperature rose from 20 to 32°C, (ii) metabolism relied more heavily on lipids and carbohydrates at 20 and 24°C while protein catabolism increased at 28 and 32°C, and (iii) the potential feeding rates of D. polymorpha declined by 73% as temperature rose from 20 to 32°C. Above 28°C D. polymorpha was unable to match energy expenditures with concurrent food intake and forced to rely on stored fuels.

Entire Paper
Contact: D.W. Aldridge, Department of Biology, North Carolina Agricultural and Technical State University, Greensboro NC 27411, USA
Keywords: Zebra_mussel, Basic_biology, Physical_control
Product Type: Research, Basic_biology
User Type: General