[Variation in the free amino acid content of ovary, hepatopancreas and hemolymph of Penaeus schmitti during ovarian maturation (Crustacea, Decapoda, Penaeidae)].
Quantitative and qualitative variations of free-amino-acids contents (FAA) of ovaries, hepatopancreas and haemolymph have been studied in the course of ovarian maturation in Penaeus schmitti. In the ovary, FAA content, expressed as microM/g ovary fresh weight, decreases from 56.2 to 23.6 microM between gonadosomatic index (GSI) 0.8 and GSI 7.1. There is an increase of hepatopancreas FAA content of 33.4% till GSI 4. Haemolymph FAA content increases from 0.32 to 1.76 microM/ml, with maximal values of 3.74 microM/ml when GSI are between 3 and 4. FAA content of ovaries, expressed as microM/g of animal, is 3.2 fold higher at the end of maturation, with a main increase in the first stages of ovogenesis. Maturation process has a quantitative effect on all FAA, but, on a qualitative point of view, it concerns mainly lysine, arginine and glycine. The main variations of AA composition (expressed as percentage of total FAA) are observed in haemolymph.
Marangos
C
C
Centre d'Océanologie de Marseille, U.S. C.N.R.S. 41, Station Marine d'Endoume.
Ramos
L
L
Oliva
M
M
D000596:Amino Acids / Q000378:metabolism*; D000818:Animals; D005260:Female; D006458:Hemolymph / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D010053:Ovary / Q000254:growth & development / Q000378:metabolism; D010179:Pancreas / Q000378:metabolism; D033561:Penaeidae / Q000254:growth & development / Q000378:metabolism*
D000596:Amino Acids
Variations des teneurs en acides aminés libres de l'ovaire, de l'hépatopancréas et de l'hémolymphe de Penaeus schmitti au cours de la maturation ovarienne (Crustacea, Decapoda, Penaeidae).