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Physiology of Crustacea from difficult environments

Published online by Cambridge University Press:  03 November 2011

A. P. M. Lockwood  and
S. R. L. Bolt
A. P. M. Lockwood
Affiliation:
Department of Oceanography, University of Southampton, Southampton SO9 5NH, U.K.
S. R. L. Bolt
Affiliation:
Department of Oceanography, University of Southampton, Southampton SO9 5NH, U.K.
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Abstract

Examples of the mechanisms involved in body fluid regulation by present-day crustaceans inhabiting variable salinity habitats are described using amphipod gammarids and the isopod Mesidotea (Saduria) entomon as models. Appropriately the species inhabiting the most demanding habitats have the greatest range and most sophisticated regulatory responses. Behaviour, micromorphology and physiology are all involved to a variable degree and, in the examples discussed, responses to salinity change seem finely tuned to countering the problems generated by particular environments. This applies both in the rapid responses to sudden alteration in salinity and to the longer term changes associated with acclimation to a new steady state condition. The isolation of populations and features of derived freshwater races are considered and the implications for the presumed physiological mechanisms of fossil forms discussed.

Keywords

AmphipodaCrustaceagill physiologyIsopodaosmoregulationpermeabilityphysiological responses to salinity changeracial differences
Type
Physiological adaptations in some recent and fossil organisms
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 80 , Issue 3-4: Environments and Physiology of Fossil Organisms , 1989 , pp. 285 - 292
Copyright
Copyright © Royal Society of Edinburgh 1989

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