青少年供应可以预测未来大量的大型珊瑚鱼吗?
Shaun K Wilson1, Martial Depczynski2, Christopher J Fulton2
1Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Crawley, Western Australia, Australia; Oceans Institute, Indian Ocean Marine Research Centre, The University of Western Australia, Crawley, Western Australia, Australia; Marine Science Program, Department of Biodiversity, Conservation and Attractions, Kensington, Western Australia, Australia.
Marine environmental research
|June 16, 2024
概括
宁加鲁礁的年轻鱼类丰富性预测了1至2岁的年轻鱼类种群,特别是在更温暖的拉尼娜年份. 然而,由于定居后的因素,预测年龄较大的鱼是具有挑战性的.
科学领域:
- 海洋生态海洋生态学
- 渔业科学 渔业科学
- 人口动态 人口动态
背景情况:
- 鱼种群对宁礁的生态系统至关重要.
- 预测未来的鱼类丰富性对于有效的渔业管理至关重要.
- 了解幼鱼群和成年鱼群之间的联系,有助于保护工作.
研究的目的:
- 评估青少年莱特里尼德丰富的预测力对未来的成年人群在宁礁.
- 调查青少年和成年人之间关系的区域差异.
- 为了确定影响莱特里尼德鱼类生存和繁殖的因素.
主要方法:
- 分析了连续13年收集的尺寸频率数据.
- 青少年 (总长度<5厘米) 和随后的成年人群之间的相关性分析.
- 北部和南部宁加卢地区之间的预测关系的比较.
主要成果:
- 在拉尼纳年期间,年年幼的莱特里尼德丰富度在宁加卢北部最高.
- 年轻的丰富性解释了1~2岁Lethrinus nebulosus丰富性的35%的变异.
- 青少年的丰富性与南宁加卢的1-2岁的Lethrinus atkinsoni有积极的相关性,但预测的鱼类年龄大于2岁.
结论:
- 青春期莱特里尼德丰富度是1-2岁鱼类的有用预测指标,北方的关系更为强烈.
- 定居后的过程显著影响了2岁以上的莱特里尼德种群.
- 由于复杂的生态因素,在两年以后,准确量化未来的莱特里尼德种群仍然具有挑战性.
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