在鱼长渔业中探索鱼类掠食率
Eric Gilman1, Milani Chaloupka2, Aude Pacini3
1Fisheries Research Group, United States of America.
PloS one
|March 28, 2024
概括
在长渔业捕捞的鱼类上,鱼 (牙) 的掠夺是罕见的,但对某些鱼类有选择性. 了解这些策略是开发有效缓解人类与野生动物冲突方法的关键.
科学领域:
- 海洋生物学 海洋生物学
- 渔业 科学 渔业 科学
- 保护生物学 保护生物学
背景情况:
- 牙 (牙) 种与渔具相互作用,导致捕捞和副捕捞的掠夺.
- 这种相互作用导致渔业的重大经济损失.
- 目前缺乏有效,无害和商业上可行的缓解方法,以缓解鱼类长渔业中鱼类掠食的危害.
研究的目的:
- 了解夏威夷的金枪鱼长渔业中的虫掠夺策略.
- 量化特定物种的掠夺率,为缓解策略提供信息.
- 解决人类与野生动物之间的冲突. odontocetes和渔业.
主要方法:
- 基于夏威夷的金枪鱼长渔业观察员数据的分析.
- 贝叶斯双项概率估计器与贝叶斯-拉普拉斯先验的应用.
- 计算特勒奥斯特和弹性枝状物种的后部虫掠夺率的平均值.
主要成果:
- 掠夺发生在约6%的群体中,在远物种中,速率有显著的变化.
- 短鱼的掠夺率最高 (1.2%),而蓝的掠夺率非常低 (0.002%).
- 奥登托切特选择性地掠夺了某些远物种,这可能是基于能量价值和身体大小等因素,而不是中位数长度.
结论:
- 在这种渔业中,虫捕食捕捞是一种罕见但有选择性的事件.
- 这些发现支持开发有针对性,有效和商业上可行的缓解方法.
- 对虫掠夺策略的进一步研究可以帮助减少副捕获和经济损失.
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