Assessment of stocking density on growth and survival of Peruvian grunt Anisotremus scapularis (Tschudi, 1846) larvae in laboratory

Castro Fuentes A.; Cota N.; Montes M.; Carrera L. · Marine and Fishery Sciences (2022) · DOI: 10.47193/mafis.3512022010102

Resumen

Marine fish larviculture under laboratory condition is influenced by factors such as stocking density, nutrition, water quality, which affect directly growth and survival. This study was aimed to determine the effect of stocking density on growth, survival and condition factor of Peruvian grunt Anisotremus scapularis larvae reared in laboratory conditions. Fish larvae were obtained by natural spawning of broodstock keep under controlled conditions. Four culture densities of 5, 10, 15 and 20 larvae l-1 were tested. Larvae rearing were carried out for 60 d at 19 °C in a static system consisting of 12 tanks with a capacity of 100 l each. Results showed significant differences in the condition factor (K) and survival, but no such differences were detected in the specific growth rate. Stocking density of 10 larvae l-1 obtained the highest K value (2.14 ± 0.31) during the experiment; therefore, this value is suggested as the initial stocking density for Peruvian grunt.