CYCLE GAMETOGENIC OF THE OYSTER, Pinctada imbricata, IN CULTURE SUSPENDED, GULF OF CARIACO, VENEZUELA

Patricia Helena Romero Fereira, Dwight Arrieche, Vanessa Acosta Balbas, Luis Pérez Blanco, Cesar Lodeiros

Submited: 2015-03-12 05:10:45 | Published: 2017-03-08 13:30:59

DOI: https://doi.org/10.3856/vol45-issue1-fulltext-13

Pinctada imbricata is an important aquaculture in the Gulf of Cariaco by rapid growth and continuous reproduction species throughout the year. In this work the gonads of 15 individuals collected monthly with the aim of studying the gonadal cycle were examined by histological techniques. In 11 months of culture (April 2012 - February 2013) oyster reached a size of 43.85 ± 5.66 mm DS. All specimens were sexually differentiated, predominance of males in the smaller sizes (27.38 ± 2.70 mm) showing a tendency to balance the sex ratio over time with increasing number of females in months. The monthly proportion of mature organisms was higher in males between August (40%) and November (53%) while females had a shorter release cycle synchronized gametes (September and October 67% 60%). The intense periods of spawning coincided in both sexes (October to January). The growth and reproduction were modulated by the chlorophyll a, the seston and temperature. This species constantly generated germ cells throughout the culture cycle, with stages of active development, maturity, partial spawning and postspawning. P. imbricata, presented sexual asynchrony between their individuals and continuous gonadal development in males and females that guarantees the fertilization of the species and obtaining seeds for culture development and repopulation of natural bank.


Romero Fereira P, Arrieche D, Acosta Balbas V, Pérez Blanco L, Lodeiros C. CYCLE GAMETOGENIC OF THE OYSTER, Pinctada imbricata, IN CULTURE SUSPENDED, GULF OF CARIACO, VENEZUELA. Lat. Am. J. Aquat. Res.. 2017;45(1). Available from: doi:10.3856/vol45-issue1-fulltext-13 [Accessed 22 Jan. 2019].
Romero Fereira, P., Arrieche, D., Acosta Balbas, V., Pérez Blanco, L., & Lodeiros, C. (2017). CYCLE GAMETOGENIC OF THE OYSTER, Pinctada imbricata, IN CULTURE SUSPENDED, GULF OF CARIACO, VENEZUELA. Latin American Journal of Aquatic Research, 45(1). doi:http://dx.doi.org/10.3856/vol45-issue1-fulltext-13