在沙漠河的支流中,个体回归模式的产卵花嘴吸嘴鸟 (Catostomus latipinnis) 在沙漠河的支流
Sophia M Bonjour1,2, Keith B Gido3, Charles N Cathcart4
1U.S. Geological Survey, Columbia Environmental Research Center, 4200 E New Haven Rd, Columbia, MO, 65201, USA. sbonjour@usgs.gov.
Scientific reports
|November 4, 2024
概括
弗兰尼尔口吸水者表现出高的支流忠诚度产卵,男性迁移更频繁. 然而,如果人类活动降低了关键的产卵支流,这个网站的忠诚度可能是有害的.
科学领域:
- 生态生态学 生态生态学
- 鱼类学 鱼类学 鱼类学
- 保护生物学 保护生物学
背景情况:
- 支流提供了河流网络中的重要息地异质性,对鱼类生命史至关重要.
- 附属忠诚可以通过减少搜索时间和能源支出来增强产卵迁移.
- 人类对河流系统的影响可能会破坏或消除支流忠诚的好处.
研究的目的:
- 估计在麦克埃尔莫溪 (McElmo Creek) 迁移产卵的法兰口吸虫的比例.
- 评估性别和环境因素对迁移概率和地点忠实性的影响.
- 评估产卵迁移时间的长期一致性.
主要方法:
- 利用多状态模型分析从2013年到2023年的被动集成响应器 (PIT) 标签检测数据.
- 估计的迁移概率,存活率和法兰口吸虫的到达时间.
- 相关的迁移模式与春季排放和支流停留时间的年度变化.
主要成果:
- 迁移概率很高,每年从0.875到0.999不等,这表明网站忠实度很强.
- 与女性 (0.90) 相比,男性的迁移概率略高 (0.93).
- 个体鱼类表现出一致的到达时间,特别是在春季排放较高和支流居住时间较长的年份.
结论:
- 成功的支流产卵很可能对维持圣胡安河的法兰尼口吸种群至关重要.
- 高位点忠实度虽然是有益的,但在易受人为退化影响的支流中可能会变得不适应.
- 保护工作应考虑支流通道和迁徙鱼群健康的重要性.
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