Hostname: page-component-848d4c4894-x5gtn Total loading time: 0 Render date: 2024-05-15T02:07:26.063Z Has data issue: false hasContentIssue false
  • English
  • Français

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: r.mcallen@ucc.ie
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Atkinson, D.A., 1977. Cellular energy metabolism and its regulation. New York: Academic Press.Google Scholar
Burton, R.S., 1986. Incorporation of 14C-bicarbonate into the free amino acid pool during hyperosmotic stress in an intertidal copepod. Journal of Experimental Zoology, 238, 55–61.Google Scholar
Burton, R.S. & Feldman, M.W., 1982. Changes in free amino acid concentrations during osmotic response in the intertidal copepod Tigriopus californicus. Comparative Biochemistry and Physiology, 73A, 441–445.Google Scholar
Damgaard, R.M. & Davenport, J.D., 1994. Salinity tolerance, salinity preference and temperature tolerance in the high shore copepod Tigriopus brevicornis. Marine Biology, 118, 443–449.Google Scholar
Goolish, E.M. & Burton, R.S., 1989. Energetics of osmoregula-tion in an intertidal copepod; effects of anoxia and lipid reserves on the pattern of free amino acid accumulation. Functional Ecology, 3, 81–89.CrossRefGoogle Scholar
McAllen, R. & Taylor, A.C., 2001. The effect of salinity change on the oxygen consumption and swimming activity of the high-shore rockpool copepod Tigriopus brevicornis. Journal of Experimental Marine Biology and Ecology, 263, 227–240.Google Scholar
McAllen, R., Taylor, A.C. & Davenport, J.D., 1998. Osmotic and body density response in the harpacticoid copepod Tigriopus brevicornis in supralittoral rockpools. Journal of the Marine Biological Association of the United Kingdom, 78, 1143–1153.Google Scholar
Schoffeniels, E. & Gilles, R., 1970. Osmoregulation in aquatic arthropods. In Chemical zoology, vol. V (ed. M. Florkin and B.T. Scheer), pp. 255–286. New York: Academic Press.Google Scholar