Opposite selection on behavioural types by active and passive fishing gears in a simulated guppy Poecilia reticulata fishery
Opposite selection on behavioural types by active and passive fishing gears in a simulated guppy Poecilia reticulata fishery
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DOI：
10.1111/jfb.12620
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发表时间：
2015-03-01
影响因子：
2
通讯作者：
Utne-Palm, A. C.
中科院分区：
文献类型：
--
作者：
Diaz Pauli, B.;Wiech, M.;Utne-Palm, A. C.
这项研究评估了渔具在行为特征上是否具有选择性，比如大胆和活跃，以及这与生产力特征（生长）之间的关系。雌性孔雀鱼（Poecilia reticulata）在害羞-大胆轴上的行为和活动被筛选，然后测试它们被被动和主动渔具捕获的方式是否不同，这里以陷阱和拖网为代表。两个齿轮都对大胆度有选择性；大胆的个体更快地被陷阱捕获，但更经常地逃脱拖网。大胆度和齿轮脆弱性与经济活动和经济增长的相关性较弱。研究结果使人们注意到捕鱼行为维度的重要性：对行为特征的选择性捕捞将改变种群的特征组成，并可能最终影响复原力和渔业生产力。(C) 2015年不列颠群岛渔业协会
This study assessed whether fishing gear was selective on behavioural traits, such as boldness and activity, and how this was related with a productivity trait, growth. Female guppies Poecilia reticulata were screened for their behaviour on the shy-bold axis and activity, and then tested whether they were captured differently by passive and active fishing gear, here represented by a trap and a trawl. Both gears were selective on boldness; bold individuals were caught faster by the trap, but escaped the trawl more often. Boldness and gear vulnerability showed weak correlations with activity and growth. The results draw attention to the importance of the behavioural dimension of fishing: selective fishing on behavioural traits will change the trait composition of the population, and might eventually affect resilience and fishery productivity. (C) 2015 The Fisheries Society of the British Isles