Sensitivity of restrained skipjack tuna ( Katsuwonus pelamis) to abrupt increases in temperature

1. 1. Restrained skipjack tuna ( Katsuwonus pelamis) signaled by deceleration of heart rate that they could perceive abrupt temperature increases (1°C/sec) as small as 1°C. 2. 2. A thermal stimulus directed into the oral-branchial cavity was more effective in eliciting responses than stimuli deliver...

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