Data/hora: 11/06/2024 10:58:31

Provedor de dados: | 5
País: | France
Título: | Influence of one selected Tisochrysis lutea strain rich in lipids on Crassostrea gigas larval development and biochemical composition
Autores: | Da Costa, F.; Petton, Bruno; Mingant, Christian; Bougaran, Gael; Rouxel, Catherine; Quere, Claudie; Wikfors, G. H.; Soudant, P.; Robert, Rene.
Data: | 2016-08
Ano: | 2016
Palavras-chave: | Larvae; Lipids; Oyster; Tisochrysis lutea.
Resumo: | Effects of a remarkably high overall lipid Tisochrysis lutea strain (T+) upon gross biochemical composition, fatty acid (FA), sterol and lipid class composition of Crassostrea gigas larvae were evaluated and compared with a normal strain of Tisochrysis lutea (T) and the diatom Chaetoceros neogracile (Cg). In a first experiment, the influence of different single diets (T, T+ and Cg) and a bispecific diet (TCg) was studied, whereas, effects of monospecific diets (T and T+) and bispecific diets (TCg and T+Cg) were evaluated in a second experiment. The strain T+ was very rich in triglycerides (TAG: 93–95% of total neutral lipids), saturated FA (45%), monounsaturated FA (31–33%) and total fatty acids (4.0–4.7 pg cell−1). Larval oyster survival and growth rate were positively correlated with 18:1n-7 and 20:1n-7, in storage lipids (SL), and negatively related to 14:0, 18:1n-9, 20:1n-9, 20:4n-6 and trans-22-dehydrocholesterol in membrane lipids (ML). Surprisingly, only the essential fatty acid 20:5n-3 in SL was correlated positively with larval survival. Correlations suggest that physiological disruption by overabundance of TAG, FFA and certain fatty acids in larvae fed T+ was largely responsible for the poor performance of these larvae. ‘High-lipid’ strains of microalgae, without regard to qualitative lipid composition, do not always improve bivalve larval performance.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00251/36258/36063.pdf

DOI:10.1111/anu.12301

https://archimer.ifremer.fr/doc/00251/36258/

Editor: | Wiley-blackwell
Relação: | info:eu-repo/grantAgreement/EC/FP7/245119/EU//REPROSEED
Formato: | application/pdf
Fonte: | Aquaculture Nutrition (1353-5773) (Wiley-blackwell), 2016-08 , Vol. 22 , N. 4 , P. 813-836

Fonte:

2015 John Wiley &amp; Sons Ltd

info:eu-repo/semantics/openAccess

restricted use