温度对皱纹盘鲍稚鲍摄食与生长的影响

INFLUENCE OF TEMPERATURE ON FEEDING AND GROWTH OF THE YOUNG ABALONE

本文用试验的方法考察了温度对皱纹盘鲍Haliotis discus hannai Ino稚鲍摄食与生长的影响,试验于1986年11月—1987年12月分两批四次进行。结果表明:稚鲍摄食与生长的适温范围为15—22℃,最适水温为20℃左右;当水温高于20℃时,稚鲍的摄食量与生长量随水温的升高而减少,至26℃可减少约50%;当水温低于20℃时,稚鲍的摄食量与生长量随水温的下降而减少,10℃时可减少约50%,7℃时减少80—90%;至4℃时,稚鲍基本停止摄食与生长。与成鲍相比,稚鲍的摄食与生长适温范围稍狭窄些。

Temperature has an obvious influence on feeding and growth of young abalone Haliotis discus hannai Ino. The test was carried out in 1986-1987. The suitable temperature range and the optimal temperature are systematically studied by comparing the feeding rate, shell length and body weight of the young abalones of different groups at different temperatures ranging from 4 to 26℃. Results show that the suitable temperatures for the young abalone's growth are 15-22℃, optimum about 20℃. Above 20℃, the feeding and growth rates of the abalone decrease. The growth rates are 50% lower at 26℃ than that at 20℃. The growth rates decrease 50% at 10℃, 80-90% at 7℃; the feeding and growth stop at 4℃.The suitable temperature range for the young abalone is narrower than that for the mature abalone.