[Variation in the level of free amino acids during larva development of Penaeus japonicus (Crustacea, Decapoda, Penaeidae].
Variations of free amino-acids (FAA) content during the larval development of Penaeus japonicus have been studied. FAA content increases from 83 to 687 mumoles/g dry weight from egg to post-larval (20 days old: P20) development. There is a sharp increase between zoe and mysis stages, and another one between one day post-larvae (P1) and P20. After the mysis stage, free essential and non essential amino-acids evolve in a different way: the non essential FAA content, mainly glycine, increases continuously, whereas essential FAA content decreases (about 40%) from the mysis stage to metamorphosis in post-larvae (P1). FAA content evolution during larval development exhibits the same trend as the variation of the digestive enzyme activity.
Marangos
C
C
Laboratoire de Biochimie et Ecologie des Invertébrés marins (E.P.H.E.), Centre d'Océanologie de Marseille, France.
Araujo Barbosa
A C
AC
Ceccaldi
H J
HJ
D000596:Amino Acids / Q000032:analysis*; D000601:Amino Acids, Essential / Q000032:analysis*; D000818:Animals; D007814:Larva / Q000378:metabolism; D033561:Penaeidae / Q000254:growth & development* / Q000378:metabolism
D000596:Amino Acids; D000601:Amino Acids, Essential
Variations des concentrations des acides aminés libres au cours du développement larvaire de Penaeus japonicus Bate (Crustacea, Decapoda, Penaeidae).