Respiration rate and thermal tolerances of pinto abalone Haliotis kamtschatkana

Oxygen consumption rates were measured for pinto abalone, Haliotis kamtscha tkana, held at 0.5-26.5 degrees C. Thermal tolerances were inferred from re spiration data, behavior, and survival at the test temperatures. At 0.5 and 26.5 degrees C, pinto abalone were unable to maintain their attachment to surfaces and mortalities occurred. At 0.5 degrees C, the first mortality oc curred after 13 days, and by the end of 6 wk. 75% of the test animals had d ied. At 26.5 degrees C, the first death was on Day 6, and by Day 10, all an imals were dead. Between 2 and 24 degrees C, no evidence of respiratory str ess was evident and a linear relationship between oxygen consumption rate a nd temperature was observed.