Capture technique and fish personality: angling targets timid bluegill sunfish, Lepomis macrochirus
Capture technique and fish personality: angling targets timid bluegill sunfish, Lepomis macrochirus
复制标题
捕捉技术和鱼类性格：钓鱼目标是胆小的翻车鱼、Lepomis macrochirus
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
J. Godin
中科院分区：
文献类型：
--
作者：
Alexander D. M. Wilson;T. Binder;Keegan P. McGrath;S. Cooke;J. Godin
与商业和休闲捕鱼做法相关的大小选择性捕捞已被证明通过一种被称为捕鱼诱导进化的现象改变了生活史特征。这种现象可能是通过与行为特征的相关性直接或间接地针对生活史特征的选择途径的结果。在这里，我们报告了个体行为差异与捕获技术(海滩围网与垂钓)之间的关系，在野外捕获的幼鱼蓝鳍太阳鱼(Lepomis Macchirus)。在标准化的实验室条件下，对使用围网捕获的鱼(围网)和使用诱饵捕获的鱼(垂钓)分别进行大胆、水柱使用和一般活动的测试。观察到的个体间的大胆差异与野外捕获方法密切相关。垂钓捕获的鱼比使用围网捕获的鱼更胆小，体外寄生虫更少。然而，这种关系并没有延续到在一个大型户外池塘中进行的实验，实验对象是围网捕捞的、单独标记的野鱼，根据之前评估的大胆分数，在远离避难所的开阔水域中，胆大的人比胆小的人更有可能上钩。我们的研究既新颖又重要，因为它描述了捕获技术与自然种群大胆之间的关系，并强调了行为生物学家、种群生物学家和保护生物学家与动物捕获方法相关的抽样偏差的潜在风险。
Size-selective harvesting associated with commercial and recreational fishing practices has been shown to alter life history traits through a phenomenon known as fishing-induced evolution. This phenomenon may be a result of selection pathways targeting life-history traits directly or indirectly through correlations with behavioral traits. Here, we report on the relationship between individual differences in behavior and capture technique (beach seining versus angling) in wild-caught juvenile bluegill sunfish (Lepomis macrochirus). Both fish caught by using a seine net (seined) and fish caught by using a lure (angled) were individually tested under standardized laboratory conditions for their boldness, water-column use, and general activity. Observed inter-individual differences in boldness were strongly correlated with method of capture in the wild. Fish caught by angling were more timid and had fewer ectoparasites than fish caught using a seine net. However, this relationship did not carry over to an experiment in a large outdoor pool with seine-caught, individually tagged wild fish, where bolder individuals were more likely to be angled in open water away from refuges than more timid individuals, based on their previously assessed boldness scores. Our study is both novel and important, as it describes the relationship between capture technique and boldness in a natural population and underscores the potential risk of sampling biases associated with method of animal capture for behavioral, population, and conservation biologists.