| 拖网网囊网目选择性能的解析 |
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| 引用本文： | 葛长字.拖网网囊网目选择性能的解析[J].南方水产,2005,1(4):30-35. |
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| 作者姓名： | 葛长字 |
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| 作者单位： | 中国海洋大学海洋生命科学与技术学部海洋渔业系,山东,青岛,266003 |
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| 摘 要： | 副渔获问题在拖网渔业中尤为严重,因此囊网的网目选择性一直倍受关注。网目选择性常以Logistic或Richards方程来描述。因方程所采用的变量不同而分为体长或主选择性曲线。研究过程中,常用套网法和比较作业法。针对这2种实验方法,作者综述了不同的解析方法以及不同实验间数据合并的条件。提出研究鱼类和渔具的作用,鱼类遭遇网渔具的影响因素以及如何建立合理的数学模型,推测主选择性曲线是渔具选择性研究的重点。
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| 关 键 词： | 网囊 网目选择性 解析方法 |
| 文章编号： | 1673-2227-(2005)04-0030-06 |
| 修稿时间： | 2005年4月25日 |
The review on the analysis of mesh size selectivity of trawl cod-end |
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| GE Chang-zi.The review on the analysis of mesh size selectivity of trawl cod-end[J].South China Fisheries Science,2005,1(4):30-35. |
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| Authors: | GE Chang-zi |
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| Abstract: | Mesh size selectivity of trawl cod-end is received more attentions because the by-catch is much serious in trawl fishery. The mesh size selectivity can be expressed by logistic or Richards equation. There are two kinds of selectivity cures, body length or master selectivity curve, because of the variables used in the selectivity equations. During studying the mesh size selectivity of trawl cod-end, cover net methods and compare fishing methods are usually used. The author reviewed different resolution methods and incorporative conditions aiming at above two methods. And the author advanced it is important to study the action between fish and gear, the factors influencing fish encountering gears, and how to found reasonable mathematical models using for estimating master selectivity curve in the study on gear selectivity. |
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| Keywords: | cod-end mesh-size selectivity resolution method |
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