黄六一,高慧良,唐衍力,刘长东,许庆昌,孙鹏

• 1:中国海洋大学水产学院

摘要(Abstract)：

使用套网法在海州湾海域进行了坛子网3种网目尺寸(30、35和40mm)的网囊网目选择性试验。在分析渔获物组成的基础上,基于Logistic选择模型和数量生物量曲线(Abundance-biomass comparison curves,ABC曲线)法,获得了渔获物中主要经济品种小黄鱼(Pseudosciaena polyactis)、鹰爪虾(Trachypenaeus curvirostris)和口虾蛄(Oratosquilla oratoria de Haan)的选择性曲线和ABC曲线。结果表明,坛子网网囊网目尺寸为30、35和40mm时,小黄鱼的50%选择体长(L50)分别为7.920、9.503和11.229cm,选择范围(SR)分别为1.975、2.306和3.775cm;鹰爪虾的(L50)值分别为5.400、5.901和7.404cm,其SR值分别为1.283、1.376和1.709cm;口虾蛄的L50值分别为7.844、8.324和9.602cm,其SR值分别为2.680、2.719和2.973cm;随着网目尺寸逐渐增大,小黄鱼、鹰爪虾和口虾蛄选择性指标50%选择体长(L50)和选择范围SR值也随之逐渐增大。3种坛子网试验网囊内ABC曲线W值均小于0,表明针对海州湾目前整体生物群落,网囊网目尺寸需要进一步放大。本研究结果可为中国黄海区渔业资源可持续发展及张网网囊最小网目尺寸的确定提供科学参考。

关键词(KeyWords)： 坛子网;网囊网目;选择性;套网法;ABC曲线

Abstract:

Keywords:

基金项目(Foundation): 公益性行业(农业)科研专项经费项目(201203018;201303050-2)资助~~

作者(Author): 黄六一,高慧良,唐衍力,刘长东,许庆昌,孙鹏

DOI: 10.16441/j.cnki.hdxb.20150316

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