Efeito da astaxantina na desova da vieira Nodipecten nodosus (Linnaeus, 1759)

In worldwide aquaculture, scallops are important bivalve mollusks with high economic and nutritional value. In many countries scallop culture relies on seeds obtained from hatcheries. For this reason, broodstock conditioning is an important step for the production of spats. The experiment was conducted with an astaxanthin-enriched diet and a control diet. Accumulation of astaxanthin and sexual stage of the Nodipecten nodosus females gonads before and after spawning and larvae survival were evaluated. The astaxanthin-enriched diet showed a higher astaxanthin accumulation in the scallop gonad (18.73 ± 1.42 µg mL-1) and 100% of the animals in advanced prespawning stage before spawning. A positive effect on the spawning process of the scallop, as well as D-larvae (34.96 ± 1.55%) and pediveliger (4.28 ± 0.42%) survival for animals treated with astaxanthin-enriched diet was observed.