SciELO - Scientific Electronic Library Online

vol.45 número1Effect of dietary chitin on digestive enzyme activity, growth and survival of Macrobrachium tenellum juvenile prawnsEcological distribution of Nematopalaemon schmitti and Exhippolysmata oplophoroides (Crustacea: Caridea) near an upwelling area off southeastern Brazil índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google


Latin american journal of aquatic research

versión On-line ISSN 0718-560X


ROMERO-FEREIRA, Patricia et al. Gametogenic cycle of the oyster, Pinctada imbricata, in suspended culture in the Gulf of Cariaco, Venezuela. Lat. Am. J. Aquat. Res. [online]. 2017, vol.45, n.1, pp.139-148. ISSN 0718-560X.

The pearl oyster, Pinctada imbricata is an indigenous species that can potentially be used for aquaculture in the Gulf of Cariaco. In this work we examined the monthly gonadal development of a juvenile cohort (27.38 ± 2.70 mm) of the pearl oyster in a hanging culture system. Gonadal development was recorded throughout the study period (April 2012-February 2013), reaching the first maximum sexual maturity within five months of fixation. The females showed a sustained decrease of the gonadal index from December associated to the upwelling period, whereas the males presented oscillations that correspond to partial spawning without completely emptying the gonads. The greater frequency of spawning during upwelling, when there is greater availability of food, suggests that he has an opportunistic reproductive strategy. The sex ratio remained unchanged in the study period with a tendency to have more males (53%) at the beginning of the culture, evidencing that the stage of sexual transition of sex change is experienced by a low proportion of the population. Gametogenic development, in turn, was associated with primary productivity (Chl-a) and the availability of organic particles (organic seston). In culture, the oyster reached a size of 43.85 ± 5.66 mm. The increase in shell size was high during the first five months, stopping associated with a partial spawning with high primary production, from which the increase of the shell decreased in exchange for higher gametes production.

Palabras clave : Pinctada imbricata; gonad histology; cohort; upwelling index; Gulf of Cariaco.

        · resumen en Español     · texto en Español     · Español ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons