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Variation in the free amino acid concentrations of the supralittoral rockpool copepod crustacean Tigriopus brevicornis during osmotic stress
McAllen, R. (2003). Variation in the free amino acid concentrations of the supralittoral rockpool copepod crustacean Tigriopus brevicornis during osmotic stress. J. Mar. Biol. Ass. U.K. 83(5): 921-922
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keywords
    Amino acids; Marine crustaceans; Osmotic pressure; Copepoda [WoRMS]; Crustacea [WoRMS]; Tigriopus brevicornis (Müller O.F., 1776) [WoRMS]; Marine

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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.

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