CRESCIMENTO E SOBREVIVÊNCIA DE JUVENIS DO LINGUADO Paralichthys orbignyanus: EFEITOS DO ENRIQUECIMENTO DA ARTEMIA SP. COM N-3 HUFA

Abstract

RESUMOO linguado Paralichthys orbignyanus é um forte candidato para a aquicultura na América do Sul e a produção de juvenis é uma das etapas cruciais para a sua produção em larga escala. Sabe-se que o enriquecimento da Artemia com ácidos graxos altamente insaturados (n-3 HUFA) pode otimizar a produção de muitos peixes marinhos. Portanto, o objetivo deste trabalho foi verificar os benefícios do enriquecimento da Artemia com n-3 HUFA para a produção de juvenis de P. orbignyanus. Juvenis recém-assentados de linguado foram transferidos para seis unidades experimentais, onde foram alimentados com náuplios de Artemia ou Artemia enriquecida. Os peixes foram alimentados ad libitum à temperatura e salinidade de 24°C e 32, respectivamente. Os linguados alimentados com Artemia enriquecida cresceram significativamente mais e tiveram maior sobrevivência (P<0,05) que os linguados alimentados com Artemia não enriquecida. Contudo, a taxa de pigmentação foi similar entre linguados alimentados com Artemia enriquecida e não enriquecida. Conclui-se que a produção de juvenis de P. orbignyanus pode ser otimizada através do enriquecimento da Artemia com emulsões comerciais ricas em n-3 HUFA.PALAVRAS CHAVE: piscicultura marinha, ácidos graxos, linguado ABSTRACT Growth and survival of juvenile Brazilian flounder Paralichthys orbignyanus: effects of N-3 HUFA Artemia sp. enrichment The Brazilian flounder Paralichthys orbignyanus is a candidate for aquaculture in South America and the healthy juvenile production is the major bottleneck for its mass production. Enrichment of Artemia with highly unsaturated fatty acids (n-3 HUFA) improves the output of most marine fish larviculture. Therefore, the aim of this work was to verify the benefits of using enriched Artemia on the production of P. orbignyanus. Early juvenile flounder were transferred from a larviculture tank to six experimental units, where they were fed either enriched or non-enriched Artemia. Fish were fed ad libitum at temperature and salinity 24°C and 32, respectively. Furthermore, flounder fed enriched Artemia had significantly (P<0.05) higher survival and growth. However, the percentage of well pigmented flounder was similar when they were fed Artemia nauplii or enriched Artemia. In conclusion, the production of Brazilian flounder juveniles can be improved through the enrichment of Artemia with commercial emulsions of n-3 HUFA.

Artemia enriched with hydrolyzed yeast improves growth and stress resistance of marine pejerrey Odontesthes argentinensis larvae

“…Artemia is an important starter feed used in larviculture; however, it is deficient in certain important nutrients, and enrichment is thus common with nutrients and functional additives such as immunostimulants (Lanes et al, 2012;Lavens and Sorgeloos, 1996;Rodrigues et al, 2012).…”

Genetic and morphometric analyzes ofParalichthysspecies confirm the presence ofP. brasiliensisin the Uruguayan waters

“…Paralichthys species have high commercial value and constitute a much-appreciated resource for the artisanal and industrial demersal fisheries in the Southwestern Atlantic Ocean [7][8][9][10][11][12]. Additionally Paralichthys orbignyanus has been the subject of numerous studies related to the development of aquaculture [13][14][15][16][17][18][19]. Accurate identification and the knowledge of differences between species is relevant from the biological point of view, particularly in aquaculture and breeding programs, because invasion risks of hybrids into natural environments [20][21][22].…”