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Variation in the free amino acid concentrations of the supralittoral rockpool copepod crustacean Tigriopus brevicornis during osmotic stress

Published online by Cambridge University Press:  19 September 2003

Rob McAllen
Rob McAllen*
Affiliation:
Department of Zoology, Ecology and Plant Science, University College Cork, Lee Maltings, Cork, Ireland. E-mail: [email protected]
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Abstract

Changes in the intracellular free amino acid (FAA) concentrations of Tigriopus brevicornis when subjected to hypoosmotic (5 psu), normal seawater (35 psu) and hyperosmotic (70 psu) conditions for a three day acclimation period were investigated. Proline, alanine and lysine were the major contributors to the intracellular FAA pool. Under hypoosmotic conditions, alanine was the dominant osmolyte with proline concentration at its lowest. This trend was reversed under hyperosmotic conditions. However, the total FAA pool was at its highest concentration under normal seawater conditions, with the total FAA concentrations being reduced during hypo- and hyper-osmotic conditions.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 83 , Issue 5 , October 2003 , pp. 921 - 922
Copyright
Copyright © Marine Biological Association of the United Kingdom 2003

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