fatty acid profile of palaemon serratus
(palaemonidae) eggs and larvae during embryonic and larval development using
different live diets
L.
Narciso, S. Morais-2001
Journal of Crustacean Biology, 21(3) : 566-574
Abstract:
Palaemon serratus (Pennant, 1777) is a shrimp with a
high market value. It can be extensively produced in salt marshes with good
survival rates, and it takes a reasonable period (8-10 months) to attain
marketable size. For these reasons, it seems to have a good aquaculture
potential. However, little is known about the nutritional requirements of
this species, especially at the larval stages, and this may impose
constraints to its successful rearing. This paper describes the changes
occurring in the fatty acid profile of four developmental stages of Palaemon
serratus eggs, newly hatched Zoea I larvae, and Zoea I starved for 24 and 48
hours, with the purpose of assessing larval fatty acid requirements. We also
studied the effects of eight diets composed of microalgae (Chlorella sp. and
Isochrysis galbana), rotifer (Brachionus plicatilis) and non-enriched or
enriched brine shrimp (Artemia franciscana) nauplii on the fatty acid
profiles of P. serratus postlarvae. Analysis of the P. serratus eggs
revealed a high PUFA and HUFA content, which confirms their nutritional
importance. The best results, in terms of postlarval fatty acid profile,
were achieved with a diet of Artemia nauplii enriched with Protein Selco®,
followed by a diet of B. plicatilis, Artemia nauplii, and Isochrysis
galbana. The results from the present study are compared with survival and
growth data from a previous study, and it is concluded that Protein Selco®
appears to be the best Artemia enrichment product for the larval rearing of
P. serratus.
(Departamento de Zoologia e Antropologia, Faculdade
de Ciências da Universidade de Lisboa, Laboratório Marítimo da Guia,
estrada do Guincho, Forte N.S. da Guia, 2750-642 Cascais, Portugal, e-mail :