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tickler chain
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tickler chain
Encyclopedia
农学
驱赶链
释
tickler chain
驱赶链
一条两端固接在拖网网板后端或翼网下端,拖网时在沉子纲前的铁链。俗称赶虾链、惊虾链。因最早在捕虾拖网中使用而得名。拖网时铁链紧贴海底,驱使栖息在海底或潜入海底泥沙内的鱼虾类受惊离底进入网中,提高捕获率。是双支架拖网普遍采用的一种属具。此种结构,在捕捞对海底有一定爬驻力的章鱼、乌贼拖网上,以及捕捞鲆鲽类的网板拖网和桁架拖网上也有使用。
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