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首页> 外文期刊>Fisheries Research >Catching efficiency of gill nets and trammel nets for penaeid prawns
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Catching efficiency of gill nets and trammel nets for penaeid prawns

机译：对虾网刺网和网纹网的捕捞效率

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摘要

Fishing experiments were carried out with gill nets and trammel nets off Cochin, India, from June to August 1991 to determine the relative catching efficiency of these nets to penaeid prawns. A fleet of nets consisting of two sets of gill nets of polyamide (PA) monofilament and PA multifilament; and one set of PA multifilament trammel nets, each of four units of mesh sizes 34.0, 38.0, 40.0 and 50.0 mm was used. The relative efficiency of gill nets and trammel nets with regard to material and mesh size was compared. PA monofilament was 1.5 times more efficient than PA multifilament as a gill net material. Of the four mesh sizes used, 38.0 mm gave higher catch rates than the other mesh sizes for the exploitation of Penaeus indicus of the 100-160 rum length group. Trammel nets caught on average two times more prawns than monofilament gill nets.
机译：1991年6月至8月在印度科钦附近的刺网和and虫网进行了捕捞试验，以确定这些网对虾的相对捕捞效率。一组网，由两套聚酰胺（PA）单丝和PA复丝刺网组成;并使用一组PA复丝膜，分别使用34.0、38.0、40.0和50.0 mm四个单元。比较了刺网和网状网相对于材料和网眼尺寸的相对效率。作为mono网材料，PA单丝的效率是PA复丝的1.5倍。在使用的四种网目尺寸中，38.0毫米的捕获率高于其他网眼尺寸，用于开发100-160朗姆酒长度组的印度对虾。筛网捕捞的虾平均比单丝刺网多两倍。

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