Bioenergetics of acclimation to permethrin (NRDC-143) by rainbow trout.
Metabolic rates associated with sustained, prolonged and critical swimming speeds were examined in 10 g trout exposed to 5% 96 hr LC50 (0.75 microgram X l-1) and 10% 96 hr LC50 (1.50 micrograms X l-1) at 12 degrees C. Permethrin did not influence the metabolic cost for swimming at sustained and prolonged speeds. Basal metabolic rate increased on initial exposure to permethrin reaching maximum values after 7 days and declined to the control level after 13 days in 5% and after 32 days in 10% 96 hr LC50. Critical swimming speeds were adversely affected in a manner reflective of the effects of permethrin on basal metabolic rate. Elevation in basal metabolic rate in fish exposed to permethrin was a result of increased energy requirements due to physiological stress, detoxication and tissue repair.
D000222:Adaptation, Physiological; D000818:Animals; D004734:Energy Metabolism / Q000187:drug effects*; D007700:Kinetics; D009994:Osmolar Concentration; D010101:Oxygen Consumption / Q000187:drug effects; D026023:Permethrin; D011722:Pyrethrins / Q000633:toxicity*; D012487:Salmonidae / Q000378:metabolism*; D013550:Swimming; D013997:Time Factors; D014337:Trout / Q000378:metabolism*; D014873:Water Pollutants / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D011722:Pyrethrins; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D026023:Permethrin