Study on the effects of different microalgae diets Chaetoceros muelleri and Isochrysis galbana on growth and survival rate of pearl oyster spat Pinctada margaritifera

Subject Areas : New Technologies in Aquaculture Development

Received: 2021-02-13 Accepted : 2021-02-13 Published : 2015-08-23

Keywords: growth rate, Isochrysis galbana, Keywords: Pinctada margaritifera, Chaetoceros muelleri,

Abstract :

Abstract[1] The effectiveness of different feeding regimes for black lip pearl oyster spat(Pinctada margaritifera) based on a concentrated diet of microalgae Isochrysis galbana and Chaetoceros muelleri (singly or mixed) cultured with f/2 medium were evaluated for 30 days under laboratory conditions. Five distinct food cases (3 replications), use for testing the impact of microalgae as a concentrated form on growth and survival of pearl oyster spat. The results of present study showed that pearl oyster spatfed on mixed microalgae had relatively greater growth rate and equal survival rate compared to those fed exclusively on C. muelleri or I. galbana either when microalgae were used a concentrate diet and in particular with mixed algae when microalga I. galbana was used as a main part of diets (70% I. galbana + 30% C. muelleri). The overall growth performance clearly showed that P. margaritifera spat were successfully reared using microalgae diets tested and the pearl oyster spatfed on mixed microalgae (I. galbana + C. muelleri) showed better growth and survival rate than those that were fed on single microalgal diet.   * Corresponding Authors; Email: [e-mail]