摘要
根据大黄鱼的生物学特性和渔具选择性原理,以体重300g为分级标准,设计并制作出网箱养殖大黄鱼柔性分级装置,该装置分级栅的平均间距为33.6mm。在方形网箱中进行12次分级试验,结果表明:(1)该装置能对方形网箱内所有鱼一次性完成分级;(2)该装置适用于小型网箱养殖鱼类的分级,操作方便、对鱼惊扰较少;(3)分级效果与分级前所有鱼的体重分布、生物学参数有关;(4)分级时间在1h以上,分级效果较好。
Based on the biological characteristics of selectivity, the flexible standard 300 g. Twelve grading cage-cultured large yellow croakers and fishing gear device was built. The size of the spacing was 33.6 mm in term of the grading experiments were carried out in small size square net using the flexible grading device, all fish in small size square net cage can be cage. The results showed： （1） that graded once; （2） that the flexible grading device can be used to grade the fishes cultured in the small size square cage. The handling was convenient and less disturbance to the fish; （3） that of unmarketable fish and the biological parameter lhour, the grading effect was better. grading effect were related to the percentage of individuals of fish; （4） that when the grading duration was more than
出处
《浙江海洋学院学报（自然科学版）》
CAS
2009年第2期170-175,182,共7页
Journal of Zhejiang Ocean University(Natural Science Edition)
基金
温州市科技发展计划项目(S2004B024)
上海市重点学科建设项目(S30702)
浙江省平阳县南麂岛开发有限公司项目(技04-49)
关键词
大黄鱼
柔性分级装置
分级效果
网箱养殖
Pseudosciaena crocea
flexible grading device
grading effect
cage-culture
