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| Gourtay, Clemence; Chabot, Denis; Audet, Celine; Le Delliou, Herve; Quazuguel, Patrick; Claireaux, Guy; Zambonino-infante, Jose-luis. |
| Global climate changes have led to a depletion in omega-3 polyunsaturated fatty acids (n-3 PUFA) in marine phytoplankton that—with food web transfers—could negatively impact fish performance. The aim of this study was to assess the effect of a reduction in the dietary availability of n-3 PUFA on growth performance, organ allometry, and fatty acid composition in juvenile European sea bass (Dicentrarchus labrax) raised at two different temperatures: 15 °C (natural conditions) and 20 °C (global warming scenario). Fish were fed for 5 months with two isoenergetic and isoproteic diets: a reference diet (RD; 1.65% n-3 PUFA on a dry matter basis, DM) used as a proxy of trophic networks where n-3 PUFA were plentiful, and a lower n-3 PUFA diet (LD; 0.73% n-3 PUFA on... |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56543/58335.pdf |
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| Seychelles, Laurent H.; Doiron, Kim; Audet, Celine; Tremblay, Rejean; Pernet, Fabrice; Lemarchand, Karine. |
| Rotifers (Brachionus plicatilis), commonly used at first feeding in commercial fish hatcheries, carry a large bacteria load. Because they are relatively poor in essential fatty acids, it is common practice to enrich them with fatty acids, including arachidonic acid (AA). This study aims to determine whether prey enrichment with AA may act as a prebiotic and modify the microbial community composition either in AA-enriched rotifer cultures or in larval-rearing water using winter flounder (Pseudopleuronectes americanus) as a larval fish model. AA enrichment modified the bacterial community composition in both the rotifer culture tanks and the larval-rearing tanks. We observed an increase in the number of cultivable bacteria on TCBS (thiosulfate-citrate-bile... |
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Palavras-chave: Communauté bactérienne; Rotifères; Enrichissement en acide arachidonique; Vibrio sp.; Prébiotique; Bacterial community; Rotifers; Arachidonic acid enrichment; Vibrio sp.; Prebiotic. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00137/24778/25189.pdf |
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