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The pressure tolerance of deep sea amphipods collected at their ambient high pressure

, : The pressure tolerance of deep sea amphipods collected at their ambient high pressure. Comparative Biochemistry & Physiology A 71(2): 349-352

Deep sea benthic amphipods were collected at their normal ambient pressure of 394-442 atm from depths .apprx. 4000 m (Paralicella caperesca, Orchomene sp., etc.). Their activity at normal pressure and temperature was observed and the responses to a standard pressure test were noted. Contrary to a prediction derived from the responses of similar animals from lesser depths, the 4000 m amphipods did not convulse at high pressure although they exhibited mild hyperexcitability at > 400 atm followed by a progressive inhibition of activity starting at .apprx. 700 atm. In failing to convulse at high pressure the amphipods from 4000 m differ radically in their pressure tolerance from those which live at depths down to 2700 m.

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Accession: 006740072

DOI: 10.1016/0300-9629(82)90415-7

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