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Can encapsulated embryos of Crepidula fornicata (L.) use extracapsular dissolved organic matter? An experimental study with a 13C-enriched amino acid ArchiMer
Leroy, Fanny; Comtet, Thierry; Brante, Antonio; Leroux, Cedric; Riera, Pascal.
Many marine gastropod species brood their embryos in thin-walled capsules to protect them during development. Despite its beneficial effects, encapsulation has two major constraints, nutrition and oxygen supply, which affect embryo development and larval survival. Developing embryos usually rely on intracapsular food sources provided by the mother, in the form of yolk, nurse eggs and intracapsular fluid. However, it is still not clear if they are able to feed on extracapsular sources that may cross the capsule wall. We investigated this possibility in the calyptraeid species Crepidula fornicata. In this species, the internal capsule wall thickness sharply decreases during embryonic development, which might change wall permeability to small organic...
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Ano: 2012 URL: https://archimer.ifremer.fr/doc/00374/48507/48774.pdf
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