摘要
根据对网箱养殖许氏平 (Sebastesschlegeli)的生物学测定 ,得到其体重与体宽的回归方程为 :W =0 115 7L2 .190 6 ,R2 =0 92 6 6 ,并以其体宽为分级系统格栅间距确定的依据。在 4m× 4m×4m网箱内使用间距为 4 4mm的分离栅经过 10min分级 ,结果表明 ,允许被分离的小个体鱼类的平均分级率为 90 33% ;使用间距 4 4mm的分离栅在周长为 5 0m的网箱中分级后 ,分级网内大个体鱼类的体重比分级前平均重 0 13kg/尾。
Based on the biological measurement of Sebastes schlegeli farmed in net cages, the relation between body weight and body width can be calculated with a regression equation as follows: W=0.115 7L 2.190 6,R 2=0.926 6, which is the basis for designing the aperture size of the grading panel. A trial grading was carried out in a net cage with a grading panel of 44 mm in aperture width. The test results showed that 90.33% of all the small fish supposed to escape could swim through the opening of the panel after 10 minutes of grading operation. The average body weight of the big size fish remained in the grading net was 0.13 kg more than that of fish without sizing grade.
出处
《海洋水产研究》
CSCD
2004年第3期61-67,共7页
Marine Fisheries Research
基金
国家 8 63计划项目 (2 0 0 1AA62 30 1 0
2 0 0 3AA62 30 1 0 )资助
