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食物的可用性对带蛇的结构生长和身体储备有直接和延迟的影响
Carli R Dinsmore1, Anne Bronikowski2, Amanda M Sparkman3
1Department of Ecosystem Science and Management, Pennsylvania State University, University Park, Pennsylvania, USA.
Ecology
|January 21, 2025
概括
生命早期的资源可用性塑造了带蛇的生长和生存. 生活缓慢的蛇表现出更好的补偿生长,而身体状况取决于猎物,性别和生态型.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 类学 类学 类学 类学
背景情况:
- 现型可塑性允许生物适应不断变化的资源可用性,影响生存和繁殖.
- 生命早期的条件显著影响长期生长,繁殖成功和生存,特别是在ectotherms.
- 西部陆地带蛇 (Thamnophis elegans) 呈现出明显的快速和缓慢生活的生态型,为研究生命史适应提供了一个模型.
研究的目的:
- 调查早期生活和年度猎物可用性如何影响不同带蛇生态型的生长模式.
- 分析资源可用性对身体状况在性别和生殖状况方面的影响.
- 了解生活节奏策略在调解对环境变化的反应中的作用.
主要方法:
- 利用了17年来对Thamnophis elegans种群的标记回收数据.
- 应用了调整的·伯塔兰菲生长函数来建模结构生长模式.
- 采用线性预测器来评估身体状况,以响应猎物的可用性和生态型.
主要成果:
- 蛇在生命早期经历资源稀缺的情况是预先准备好以后从高猎物条件中受益.
- 缓慢生活的蛇表现出一种优越的补偿生长能力.
- 身体状况受到猎物可用性,生态型,性别和生殖状态 (非怀孕的雌性) 的复杂相互作用的影响.
结论:
- 生命早期的环境极大地影响着生物体的一生健身轨迹.
- 生活节奏策略影响了对环境波动的缓冲能力.
- 评估人口特征需要考虑取决于背景的早期生活影响和性别特定的生殖需求.
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