DIFFERENCES IN LIPID CLASS AND FATTY ACID COMPOSITIONS IN MIDGUT GLAND AND OVARY BETWEEN WILD CAUGHT AND POND REARED FEMALES OF PENAEUS KERATHURUS (FORSKAL) THROUGHOUT SEXUAL MATURATION

Diaz-Salvag, E., G. Mourente

Successful maturation of penaeid shrimps in captivity has key role for a sustainable aquaculture. Since lipids play an important role as structural and fuel energy reserves during oogenesis, a study was designed to compare gross biochemical composition, lipid classes and total lipid fatty acid contents throughout sexual maturation and spent, in midgut gland and ovary, between wild-caught and pond-reared females. As cultured animals failed in achieving a proper maturation, the evaluation of the evolution of either structural lipids such as phosphoglycerides and free cholesterol, reserve lipids such as triacylglycerols, sterol esters or free fatty acids or essential fatty acids such as eicosapentaenoic acid (EPA; 20:5(n-3)) and docosahexaenoic acid (DHA; 22:6(n-3)), during maturation was used to investigate the transference of lipids from midgut gland to ovary in both populations.

(Departamento de Biologia Animal, Vegetal y Ecologia, Universidad de Cadiz, E-11510 Puerto Real, Cadiz, Spain)

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