黑鲪生态生长效率周年变化的研究

于1983年12月-1984年5月和1990年6月-1991年1月以中国科学院海样研究所生物培育楼养殖黑为材料，进行黑周年的摄食-生长实验，以探讨其生态生长效率变化规律。结果表明，作为冷温性鱼，黑在4．0－27．3℃水温条件下都有摄食；平均日摄含量为2．4－10．0g，相对体重的百分比为1．1%-4.4%．单见，这二者的周年变化趋势基本一致；平均体重日增长量以4，6，7月和10－12月份较高。生态生长效率波动于6．5%-34．7%范围内，年平均为16．7％。

MONTHLY CHANGES OF ROCK FISH ECOLOGICAL GROWTH EFFICIENCY IN ONE YEAR

Feeding-growth experiments on rock fish (Sebastodes jusccsccns H-) were carriedout at 4.0-27.3C of seawater temperature during Dec., 1983-May, 1984 and Jun.,1990-Jan., 1991. The results were as follow:1. The mean daily food consumption (2.4-10.0g) and this consumption as aproportion of experiment fish body weight (l.1 %-4.4%) have remarkable monthlychanges and similar trends. The suitable feeding temperature of this fish is from8C to 25C and feeding intensity would be very low outside this range.2. The monthly changes of rock fish ecological growth efficiency range from6.5 %-34.7 % (16.7 % in average).3. The mean daily increments of body weight in April, June, July and Octo-ber-December were higher than that of the other months and the peak months ofrock fish feeding and growth were October-December.