Sobrevivencia, metamorfosis y crecimiento de larvas del camarón Penaeus californiensis (Decapoda: Peneidae) alimentadas con differentes microalgas

Abstract

The effect of three microalgae, Chaetoceros gracilis, Isochrysis galbana, and Dunalliella sp. on the larval development of yellowleg shrimp Penaeus californiensis, was evaluated in the Oyster Production Center of Bahia Kino, Sonora, México. The effects of each microalgae (1) individually, (2) combined and (3) mixed with Artemia nauplii (from zoea III stage), were considered. Twenty four exp]erimental units (three 16.0 1 plastic bottles per treatment) were used. During the experiment temperature was maintained around 25°C, and salinity around 35 ppt. The stocking density of nauplii was 50/1. The best survival was obtained with C. gracilis (55%), followed by the combination of C. gracilis and Dunalliella sp (48%). The worst survival was obtained in the treatment with Dunalliella sp. An evident delay in the metamorphosis times was observed in treatments without C. gracilis. Significant differences (p<0.05) in growth from zoea II stage were recorded in those treatments.