摘要
对新引进的红拟石首鱼Sciaenopsocellatus进行咸水池养生长特性与饲养技术研究 ,结果表明 ,其生长旺盛期在 2龄。应用vonBertalanffy方程求得人工饲养条件下其体长、体重生长方程分别为Lt =656.2 72 2 [1 -e- 0 .5998(t+0 .0 82 3) ]和Wt =41 93.90 2 1 [1 -e- 0 .5998(t+0 .0 82 3) ]2 883 4。体重生长拐点于 1 7龄处。面积为 6 5hm2 池塘的单养 ,经 365d ,最高单产 1 860 0kg·hm- 2 ,净产 1 1 0 2 5kg·hm- 2 ;面积为 1 0 1 7hm2 池塘以拟石首鱼为主养对象的混养 ,经 540— 560d ,最高单产 1 8640kg·hm- 2 ,净产 1 82 2 5kg·hm- 2 。投入产出比 1∶1 2。
Growth characteristics of pond reared Sciaenops ocellatus and its culture technique are studied.The growth peak of pond reared Sciaenops ocellatus is at the age of two years.According to von Bertalanffy equation,the growth equations of its length and weight under artificial culture condition can be expressed as L t =656.272 2[1-e -0.599 8(t+0.082 3 ) ]; W t =4 193.902 1 [1-e -0.599 8(t+0.082 3 ) ] 2.883 4 .The growth inflection point of body weight is at 1.7 year.The highest output of its monoculture is 18 600kg·hm -2 after 365 days in the rearing ponds of 6.5hm 2 and the average net output is 11 025kg·hm -2 .As to the polyculture in the rearing ponds of 10.17hm -2 ,with Sciaenops ocellatus as dominant species,the highest output is 18 640kg·hm -2 after 540—560 days,and the average net output is 18 225kg·hm -2 ,the ratio of input to output is 1∶1 2.
出处
《热带海洋》
CSCD
2000年第1期90-96,共7页
关键词
珠江口
红拟石首鱼
池养
生长
饲养
Sciaenops ocellatus
culture technique
growth characteristics
