CAJ | 학술논문

采用实验生态学方法,以半刺厚唇鱼( Acrossocheilius hemispinus)仔鱼为试验对象,探讨在25．4~29．5℃水温条件下延迟投饵对其摄食、生长与存活的影响。结果表明,半刺厚唇鱼仔鱼开口当天投饵及延迟投饵1~12 d,投饵后3 h内仔鱼的摄食率分别为0、33．33%、100%(6~11日龄)、85．71%、76．92%、46．67%和28．57%,延迟投饵12 d仔鱼的摄食率为0；仔鱼最高初次摄食率出现在6~11日龄,初次摄食期仔鱼的PNR发生在14日龄,仔鱼具有摄食能力的时间长达11 d；延迟投饵0~2 d的30日龄仔鱼全长无显著差异(P >0．05),而与其它组仔鱼的全长则差异显著(P <0．05)；延迟投饵0~5 d仔鱼的存活率均达到100%,但延迟7 d以上仔鱼的存活率急剧下降,延迟投饵9 d仔鱼的存活率为0。综合仔鱼的摄食、生长与存活表现,开始投饵的适宜时间在仔鱼开口后的2d之内。
채용실험생태학방법,이반자후진어( Acrossocheilius hemispinus)자어위시험대상,탐토재25．4~29．5℃수온조건하연지투이대기섭식、생장여존활적영향。결과표명,반자후진어자어개구당천투이급연지투이1~12 d,투이후3 h내자어적섭식솔분별위0、33．33%、100%(6~11일령)、85．71%、76．92%、46．67%화28．57%,연지투이12 d자어적섭식솔위0；자어최고초차섭식솔출현재6~11일령,초차섭식기자어적PNR발생재14일령,자어구유섭식능력적시간장체11 d；연지투이0~2 d적30일령자어전장무현저차이(P >0．05),이여기타조자어적전장칙차이현저(P <0．05)；연지투이0~5 d자어적존활솔균체도100%,단연지7 d이상자어적존활솔급극하강,연지투이9 d자어적존활솔위0。종합자어적섭식、생장여존활표현,개시투이적괄의시간재자어개구후적2d지내。
The effects of delayed initial feeding on foraging, growth and survival development of Acrossocheili-us hemispinus larvae were investigated in the 25. 4~29. 5℃ of water temperature using experimental ecological method. The results showed that: In the opening day, feeding and delayed feeding of 1~12 days, 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 days 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 that larvae with feeding ability is for up to 11 days; It has no significant difference ( P>0. 05 ) delayed feeding of 0~2 days for 30 days of age lar-vae, but has significant difference with other groups of larvae ( P <0. 05 ); Larval survival rate reached 100% which delayed feeding for 0~5 days, but the survival rate decreased rapidly which delayed for more than 7 days, and larval survival rate was 0 when delayed feeding for 9 days. Considering the comprehensive performance of feeding, growth and survival, the fit time to feed the larvae is within 2 days after opening.