Variations des concentrations des acides amines libres des muscles abdominaux de Penaeus japonicus et Crangon crangon au cours d'acclimatations thermiques

Variations of free amino acid concentrations in abdominal muscle of Penaeus japonicus and Crangon crangon have been studied after rapid changes of environmental temperature. During acclimatization at 16^o, C. crangon exhibits a higher adaptability than P. japonicus. Total free amino acids increased ...respectively from 242 to 252 μM/g live weight from C. crangon and from 278 to 336 μM for the other species after 12 days of acclimatization. By contrast, during acclimatization at 26^o, P. japonicus shows higher adaptation activity. Total free amino acid content is the same as the control, while in C. crangon, free amino acid content is 34% higher after 12 days of acclimatization. The free amino acids involved in osmoregulation during thermal acclimatizations are glycine, alanine, glutamine and glutamic acid. Variations of these amino acids show differences according to acclimatization temperatures and the species studied. The changes in essential amino acid/non-essential amino acid ratios show that protein synthesis is more important at 16^o for C. crangon and at 26^o for P. japonicus. Ausführliche Beschreibung Beschreibung ausblenden

1. Person:	Marangos, C.
Weitere Personen:	Ceccaldi, H.J.
Quelle:	in Biochemical Systematics and Ecology Vol. 16, No. 3 (1988), p. 333-341 Weitere Artikel
Format:	Online-Artikel
Genre:	Penaeus japonicus, Crangon crangon, Crustacea, thermal acclimatization, free amino acids
Sprache:	French
Veröffentlicht:	1988
Beschreibung:	Online-Ressource
Online Zugang:	Online
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Anmerkung:	Copyright: Copyright (c) 2002 Elsevier Science Ltd