有证据表明,在金枪鱼渔业中,渔民设计的解决方案是对曼塔鱼和沙龙鱼的副捕获
Melissa R Cronin1,2,3,4, Jefferson Murua5, Donald A Croll6
1Department of Fisheries Oceanography, University of Massachusetts Dartmouth, New Bedford, Massachusetts, USA.
概括
一个新的分类网装置有效地释放了在金枪鱼渔业中作为副捕获捕获的大型鱼和魔鬼鱼 (mobulids). 这项创新有助于保护,通过快速,安全地释放受威胁的虫物种.
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:
- 在热带金枪鱼鱼渔业中,受到威胁的曼塔鱼和魔鬼鱼 (mobulids) 的副捕获导致了大量的死亡.
- 有效,可行和安全的释放方法对于mobulid的保护至关重要.
研究的目的:
- 评估新型移动式附带捕捞释放装置 (分类网格) 的可行性和有效性.
- 为了比较分类网的性能与现有的释放方法关于个体大小和释放持续时间.
主要方法:
- 与金枪鱼捕捞渔船船长和船员合作.
- 在12艘船只和41个捕获事件中使用分类网格评估了mobulid释放.
- 通过分类网格释放的机动车的尺寸和处理时间与其他方法的比较.
主要成果:
- 与其他方法相比,分类网成功释放出明显更大的移动物质.
- 使用分类网格释放的平均处理时间很短 (约3分钟).
- 该设备使即使是最大的个体也能够快速释放.
结论:
- 莫布利德分类网是一个有效和可行的工具,用于减少副捕获死亡率.
- 广泛采用可以大大促进受威胁的mobulid光的保护目标.
- 标准化使用,可能是通过渔业管理组织,可以提高全球移动鱼的生存率.
相关概念视频
01:11Testing a Claim about Mean: Known Population SD
3.2K
A complete procedure of testing the hypothesis about a population mean is explained here.
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...
3.2K
01:06Fixed Action Patterns
17.4K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
17.4K