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重新引入的白 (Ciconia ciconia) 与它们的野生同类有相似的饮食
Şeniz Mustafa1, Connor T Panter1,2, Laura Vaughan-Hirsch3
1School of Applied Sciences University of Brighton Brighton UK.
Ecology and evolution
|April 14, 2025
概括
在Knepp庄园重新引入的白表现出成功的适应,野生群体消耗自然猎物,如甲虫和虫,类似于其他野生种群. 颗粒分析证实了野生和养鸟类之间的饮食差异.
科学领域:
- 生态生态学 生态生态学
- 野生动物生物学 野生动物生物学
- 保护科学 保护科学
背景情况:
- 饮食分析是了解物种生态和重新引入成功的关键.
- 白 (Ciconia ciconia) 是一个受保护兴趣的物种,其重新引入计划旨在建立自给自足的种群.
研究的目的:
- 量化评估重新引入的白的饮食.
- 为了比较自由飞行 (野生) 和囚禁群体之间的饮食组成和颗粒形态.
- 通过将野的饮食与已建立的种群进行比较,评估重新引入努力的有效性.
主要方法:
- 在2023年繁殖季收集和分析了23颗白颗粒.
- 野生和被囚禁群体之间的颗粒重量和生物质组成 (自然 vs 补充猎物) 的比较.
- 在野生群体的饮食中确定了占主导地位的猎物,重点是无脊椎动物.
主要成果:
- 野生群体颗粒的重量明显更重 (12.7 ± 9.2 g),而不是囚禁群体颗粒 (5.2 ± 2.1 g).
- 额外的猎物占捕获颗粒生物质的88.4%,与野生颗粒的52.9%相比.
- 野生白主要食用甲虫 (Coleoptera) 和地 (Clitellata).
结论:
- 在Knepp Estate重新引入的白的饮食成分与其他地方观察到的自然饮食保持一致.
- 结果表明,在重新引入的种群中,成功的释放后适应和食能力.
- 这项研究为英格兰南部重新引入的白提供了第一个定量饮食数据.
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