Net-chasing training improves the behavioral characteristics of hatchery-reared red sea bream (Pagrus major) juveniles
Net-chasing training improves the behavioral characteristics of hatchery-reared red sea bream (Pagrus major) juveniles
复制标题
追网训练改善了孵化场饲养的真鲷幼鱼的行为特征
DOI：
10.1139/cjfas-2017-0073
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发表时间：
2017
影响因子：
2.4
通讯作者：
Masuda R
中科院分区：
文献类型：
--
作者：
Takahashi K;Masuda R
释放用于种群增殖的鱼的低回报率通常归因于孵化场饲养的鱼具有较差的行为特征。采用围网法对真鲷幼鱼的行为特征进行改良。鱼提供了2分钟的净追逐，每天两次，为期3周，之后，他们的行为特征（从一个起始区域出现，回避反应新的刺激，觅食后，坦克之间的转移）分别进行了测试，并与对照组进行了比较。捕食者暴露试验，然后进行使用大理石岩鱼（arctiscus marmoratus）。与对照鱼相比，围网追逐鱼的羽化潜伏期更短，回避率更高，觅食时间更早，表明围网追逐处理可以提高对环境变化的适应性和对新事物的警觉性。网捕的鱼也表现出比对照鱼更好的存活率，优势比为6.76。我们认为，净追逐训练是一种简单而有效的方法，以改善鱼类的行为，以提高股票。
The low return rate of fish released for stock enhancement has often been attributed to hatchery-reared fish having inferior behavioral characteristics. We tried to improve the behavioral characteristic of red sea bream (Pagrus major) juveniles by using a net-chasing treatment. The fish were provided with 2 min of net chasing twice daily for 3 weeks, following which their behavioral characteristics (emergence from a start area, avoidance response to novel stimulus, and foraging following transfer between tanks) were individually tested and compared with a control group. A predator exposure test was then conducted using marbled rockfish (Sebastiscus marmoratus). Net-chased fish exhibited a shorter latency to emergence, a higher avoidance rate, and an earlier foraging time than the control fish, indicating that the net-chasing treatment may improve adaptability for environmental change and alertness to a novel object. The net-chased fish also exhibited a better survival rate than the control fish, with an odds ratio of 6.76. We suggest that net-chasing training represents an easy and efficient method for improving the behavior of fish for stock enhancement.