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Issue:ISSN 1000-7083
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Your Position :Home->Past Journals Catalog->2009 Vol.28 No.4

Preliminary Observations on Physiological Thermoregulation in Exopalaemon carinicauda
Author of the article:LIU Chong-Bin, WU Bo
Author's Workplace:(College of Basic Medicine, Wenzhou Medical College, Wenzhou 325035)
Key Words: body temperature; heart rate; thermoregulation; circulatory system; Exopalaemon carinicauda
Abstract:
Different heart rates during heating and cooling (heart rate ‘hysteresis’) are an important thermoregulatory mechanism in reptiles. This phenomenon occurs in a lineage of crustaceans with vascularised circulatory systems,which is phylogenetically distant from reptiles. We measured the heart rate in response to convective heat transfer in the crustacean Exopalaemon carinicauda. The heart rate during convective heating (from 20 to 30℃) was significantly faster than during cooling for any given body temperature. The heart rate declined rapidly immediately following the removal of the heat source, despite only negligible losses in body temperature. This presumed to confer thermoregulatory benefits particularly given the thermal sensitivity of many physiological rate functions in crustaceans.
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