Growth, weight gain and survival of the mangrove oyster Crassostrea rhizophorae Guilding, 1828 on Cubagua Island, Venezuela

Abstract:

Mangrove oyster (Crassostrea rhizophorae) spats collected in La Restinga, a coastal hipersaline lagoon (> 40‰) located in Margarita island, Venezuela, were cultured for six months in a 13 m2 raft in Cubagua island (salinity 36‰). The oysters were cultured at two densities (60 and 120 individuals for basket) and two depths (1 and 6 m). Water temperature, salinity, dissolved oxygen, particulated organic matter, chlorophyl 'a', ammonia, nitrite, nitrate, phosphate, and oyster growth were measured monthly for six months. The average growth was 5.9 ± 0.7 cm, with an average increase of 0.4 ± 0.25 cm/month. The condition index average was 24.9 ± 12.9%. ANOVA analysis of size showed a slight time variability. There was no significant difference between growing data at the two culture depths and densitier. The results indicate that it is possible to culture the mangrove oyster in Cubagua island along the whole water column.

Año de publicación:

1998

Keywords:

Fuente:

scopus