Estudio técnico para la producción de semilla de ostra (Crassostrea rhizophorae y Crassostrea gigas) en condiciones de laboratorio.

Abstract

Con el fin de evaluar la capacidad técnica en la producción de semilla de ostra en condiciones de laboratorio para abastecer la posible demanda que hubiera si el desarrollo de la ostricultura llegara a darse en Costa Rica se realizaron estudios en el laboratorio de Cultivos Marinos de la Universidad Nacional durante el periodo de 1991 a 1998. Estos fueron dirigidos hacia la producción de "semilla libre" de Crassostrea gigas y C. rhizophorae. Para ello se utilizaron reproductores de ambas especies cultivados en diferentes zonas y de C. rhizophorae extraída del banco natural Estero Vizcaya, Limón. La calidad de los reproductores no fue la esperada; en ambas especies. No se logró obtener larvas de organismos provenientes de las diferentes zonas de cultivo. Solamente once levantes larvales se lograron de un total de 59 inducciones a desove a partir de organismos de C. rhizophorae extraídos del banco natural.

In order to evaluate the technical capacity in the production of oyster seed under laboratory conditions to supply the possible demand that would exist if the development of oyster farming were to take place in Costa Rica, studies were carried out in the Marine Cultures Laboratory of the University National during the period from 1991 to 1998. These were directed towards the production of "free seed" of Crassostrea gigas and C. rhizophorae. For this, reproducers of both species grown in different areas and of C. rhizophorae extracted from the natural bank Estero Vizcaya, Limón, were used. The quality of the players was not as expected; in both species. It was not possible to obtain larvae of organisms from the different cultivation areas. Only eleven larval lifts were achieved out of a total of 59 spawning inductions from C. rhizophorae organisms extracted from the natural bank.