The oyster Crassostrea gigas (Thunberg 1795) culture in an artisanal breeding pond, La Arena, Casma.

• Published in: Revista Peruana de Biología
• Main Authors: Baltazar, Paul, Bermúdez, Pablo, Rivera, Willian
• Format: Article in Journal/Newspaper
• Language: Spanish
• Published: Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas 1999
• Subjects: Crassostrea gigas; maricultura; Viveros artesanales; desarrollo larval; ostra; mariculture; artisan breeding ground; larval development; oyster; Pacific; Pacific oyster
• Online Access: https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/8306; https://doi.org/10.15381/rpb.v6i2.8306

This paper describes the methodology used for the culture of Pacific oyster Crassostrea gigas in an artisanal breeding pond in the La Arena acuicola center, in Casma. Reproducers at gonadal maturity phase from the culture lines of the center were used. They were prepared in fiber glass tanksi of 1000 L capacity with unfiltered sea water at 27 ± 0,9 oC, and fed with maize fecula and microalgae collected from site. In one group spawning was induced by thermal stimulation (30 to 31 oC), in the other one hydrogen peroxide was added, obtaining different responses. 20 minutes after fertilization the polar body was defined in 100% of fertilized eggs; veliger larvae were visible 24 hours after fertilization. Larvae reached the pediveliger stage 20 days after culture, with average sizes of 237 ± 10 µm. Ground shells (300pm), sandpapered black plastic and oyster valvas were used for settlement of larvae. To the 33rd day, larva seeds had an average size of 1262 ± 204 µm. Then, they were introduced in pearl net for development in the sea. 30 days after sowing larvae in the sea, the average length of postlarvae was 13,4 ± 3,4 mm. This work showed the benefits of this methodology in the massive production of seeds in an artisan breeding pond. El presente trabajo describe la metodología empleada para el cultivo de la ostra del Pacífico Crassostrea gigas en un vivero artesanal, en el Centro Acuícola La Arena, Casma. Se utilizó reproductores en fase intermedia de madurez gonádica procedentes de líneas de cultivo del Centro Acuícola. El acondicionamiento se realizó en tanques de fibra de vidrio de 1000 L, con agua de mar sin filtrar a una temperatura de 27 ± 0,9 oC; adicionalmente se les alimentó con fécula de maíz y microalgas obtenidas en el lugar y cultivadas al aire libre. El desove se indujo para un grupo sólo por estimulación térmica (30 a 31 oC) y para el otro se añadió además peróxido de hidrógeno, a lo cual se presentaron respuestas diferentes. A los 20 minutos después de la fertilización se observó, en el 100% de ...