Variations in lipid content and nutritional status during larval development of the marine shrimp Penaeus kerathurus
1995
Mourente, G. | Medina, A. | González, Sergio | Rodríguez, Antonio
13 páginas, 4 tablas.
Afficher plus [+] Moins [-]Lipid class and fatty acid contents, survival and nutritional status of Penaeus kerathurus larvae, reared on a mixture of the marine microalgae Tetraselmis chuii and Isochrysis galbana (clone T-ISO), the rotifer Brachionus plicatilis and Artemia (parthenogenetic strain from Cádiz, S.W. Spain), were studied throughout development. Dry weight and free sterol contents increased and correlated positively (r = 0.91, P < 0.05) during development, whereas the ratio of triacylglycerol/free sterol (an indicator of the nutritional status of the larvae) decreased as did survival. Fatty acid contents at different larval stages reflected fatty acid content of foods. The content of docosahexaenoic acid (22:6n - 3) remained constant during the mysis and first postlarval stage and a low bioconversion rate from its precursor, eicosapentaenoic acid (20:5n - 3) (very abundant in Artemia food) was observed.
Afficher plus [+] Moins [-]This work was supported by the Comisión Interministerial de Ciencia y Tecnología, Spain (CICYT projects MAR90-0767-C04-02 and AGF93-0173).
Afficher plus [+] Moins [-]Peer reviewed
Afficher plus [+] Moins [-]Mots clés AGROVOC
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