Abstract
A sudden change in external temperature was followed in the lobster by a similar change in body temperature, which took 6 min in submerged animals but 1–2 h during aerial exposure. Submerged lobsters showed a ventilatory response to a sudden decrease in temperature but not to a sudden increase. Sudden changes in water temperature had no effect on haemolymph oxygen levels and acid‐base status. An abrupt change in air temperature after 3 h aerial exposure, led to a decline in haemolymph oxygen content and a disruption of acid‐base status, resulting in an uncompensated respiratory and metabolic acidosis with an increase in air temperature and a respiratory and metabolic alkalosis with a decrease in temperature.
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