关键词: 半刺厚唇鱼, 仔鱼, 延迟投饵, 摄食, 生长, 存活, Acrossocheilius hemispinus, larvae, delayed initial feeding, foraging, growth, survival

Abstract: The effects of delayed initial feeding on foraging, growth and survival development of Acrossocheilius hemispinus larvae were investigated in the 25.4℃~29.5℃ of temperature using experimental ecological method. The results showed that: In the opening day, feeding and delayed feeding of 1~12 D, the rate respectively is 0, 33.33%, 100% (6~11 days), 85.71%, 76.92%, 46.67% and 28.57% after the feeding of larvae feeding within 3 h, While the delayed feeding 12 D larval feeding rate was 0; The highest initial feeding rate of larval emergence at 6~11 days of age, and larvae of PNR occurred at 14 days of age. It showed that the larval have strong ability of tolerance hunger performance which with feeding ability is about 11 D; It has no significant difference (P>0.05) delayed feeding of 0~2 D for 30 days of age larvae, but has significant difference with other groups of larvae (P<0.05); Larval survival rate reached 100% which delayed feeding for 0~5 D, but the survival rate decreased rapidly which delayed for more than 7 D, and larval survival rate was 0 when delayed feeding for 9 D. Considering the comprehensive performance of feeding, growth and survival, the fit time to feed the larvae is within 2 D after opening.