The effect of dietary arachidonic acid during the Artemia feeding period on larval growth and skeletogenesis in Senegalese sole, Solea senegalensis - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Journal of Applied Ichthyology Année : 2012

The effect of dietary arachidonic acid during the Artemia feeding period on larval growth and skeletogenesis in Senegalese sole, Solea senegalensis

Résumé

To improve the understanding of the incidence of skeletaldeformities in Senegalese sole (Solea senegalensis), a feedingtrial was carried out to evaluate the effect of increasing dietaryarachidonic acid (ARA) levels during theArtemiafeedingperiod on larval growth and skeletogenesis. Larvae were fedfrom 8 to 50 days post hatching (dph) withArtemianaupliienriched with three different levels of ARA: ARA-Low, ARA-Medium and ARA-High (1.0, 4.5 and 7.0% ARA of total fattyacids, respectively). Increasing levels of dietary ARA did notaffect significantly the survival. However, it influenced growth;larvae from the ARA-M group presented the highest values offinal standard length and dry weight (11.36 ± 0.47 mm and5.86 ± 1.06 mg at 50 dph, respectively) and larvae from theARA-H group the lowest ones (9.53 ± 0.27 mm and2.47 ± 0.26 mg at 50 dph). The skeleton of larvae fed theARA-M diet tended to be more calcified at 15 dph than that oflarvae fed ARA-L and ARA-H diets. Larvae from the ARA-M group tended to show a higher incidence of fusion ofhypurals 3 and 4 (34.4 ± 3.1%) at 50 dph than the larvaefrom the other groups (18.7 ± 1.6%, in average). The latterresults reflected a trend to a higher degree of skeletaldevelopment rather than a deformity, this being in agreementwith the higher larval growth of this group. Besides, ARAlevels did not affect significantly the incidence of total skeletaldeformities (41.4 ± 1.5% in average). Larvae from all dietarytreatments mostly displayed fusions of the vertebra 43 and 44(32.2 ± 1.3% in average). The amount of 4.5% of total fattyacid of dietary ARA duringArtemiafeeding period promotedthe best growth and proper skeletogenesis in Senegalese sole larvae.

Dates et versions

hal-03081873 , version 1 (18-12-2020)

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A. Boglino, M. Darias, A. Estevez, K. Andrée, E. Gisbert. The effect of dietary arachidonic acid during the Artemia feeding period on larval growth and skeletogenesis in Senegalese sole, Solea senegalensis. Journal of Applied Ichthyology, 2012, 28 (3), pp.411-418. ⟨10.1111/j.1439-0426.2012.01977.x⟩. ⟨hal-03081873⟩
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