新英格兰棉尾 (Sylvilagus transitionalis) 的环境压力通过高质量的息地得到缓解
Eaqan A Chaudhry1, Amanda E Cheeseman2, Jonathan B Cohen1
1Department of Environmental Biology, State University of New York College of Environmental Sciences and Forestry, Syracuse, New York, USA.
概括
新英格兰棉花的生理压力较小,当入侵的日本提供掩护时,特别是当东部棉花存在时. 这表明息地特征可以减轻危物种的压力.
科学领域:
- 生态生态学 生态生态学
- 野生动物保护 野生动物保护
- 生理学 生理学 生理学
背景情况:
- 生物体因环境变化而面临生理压力,这可能会影响身体健康.
- 科特-健身假设将持续的压力与负面的健身结果联系起来,并预测积极的压力-糖皮质激素关系.
- 对生理压力的非侵入性监测对于了解野生动物健康至关重要.
研究的目的:
- 评估与环境压力因素相关的新英格兰棉尾 (Sylvilagus transitionalis) 的生理压力.
- 调查息地质量,入侵竞争对手和入侵植物对压力水平的影响.
- 为了测试Cort-Fitness假设在一个临危险的哺乳动物中的预测.
主要方法:
- 收集便样本以非侵入性测量便葡萄糖皮质醇代谢物 (FGM) 度.
- 量化森林连续阶段作为息地质量的代理.
- 评估了东方棉尾 (Sylvilagus floridanus) 的存在,以及日本柏 (Berberis thunbergii) 的密度.
主要成果:
- 侵袭性植物的流行和东部棉尾的存在显示了对FGM度的小独立效应大小.
- 观察到一种相互作用效应:日式胡果密度的增加降低了FGM度在东部棉尾发病率高的地区.
- 这表明,在某些竞争环境中,日本可能缓解生理压力.
结论:
- 息地特征,特别是侵袭性日本,可以调节新英格兰cottontails的生理应激反应.
- 像覆盖面这样的优先资源的存在可能会减轻与竞争和息地退化相关的压力.
- 保护策略可以考虑特定植物物种在减轻危野生动物压力的作用.
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