在北方毛中,生态驱动性体型变异的生态驱动因素
Rudolf Reiner1, Luca Corlatti2,3
1Berchtesgaden National Park Berchtesgaden Germany.
Ecology and evolution
|October 8, 2024
概括
北方山羊的性大小变异 (SSD) 随着人口密度的增加而增加,这是由于女性体质减少所致. 与预期相反,森林覆盖没有影响SSD.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 动物学 动物学
背景情况:
- 雄性偏差性体型变异 (SSD) 在类动物中很普遍,通常与息地开放性,较大的群体规模和雄性竞争有关.
- 固态硬件的适应性变化也可能源于个人对环境因素的塑料反应.
研究的目的:
- 调查环境变量,特别是森林覆盖面和地质基质对北方松鼠 (Rupicapra rupicapra) 中SSD表达的影响.
- 通过对群体大小和性选择的影响,测试息地开放性驱动SSD的假设.
主要方法:
- 利用了来自奥地利阿尔卑斯山狩猎的北方的161,948个体重记录的大数据集.
- 分析了来自28个山脉的数据,森林覆盖面,地质基板和人口密度各不相同.
- 采用单分子模型来适应特定人群的生长曲线,并使用日志转换的男性和女性非对称体质的比率计算SSD.
主要成果:
- 人口密度对SSD产生了积极的影响,主要是由于女性体重减少.
- 基板与SSD的减少有关,这与男性人体质量减少有关.
- 森林覆盖与两性人体质量有负面关联,但没有显著影响SSD变化.
结论:
- 环境因素,特别是人口密度和地质基质,在北方子中塑造SSD方面发挥着重要作用.
- 这些发现表明,附近的环境因素可以调解SSD的表达,可能独立于息地开放性和性选择强度.
- 森林覆盖与SSD缺乏关联,凸显了影响类动物性二重形的因素的复杂性.
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