石同位素追踪了泰国黑猩猩中雌性分散的轨迹
Renee D Boucher1, Roman M Wittig2,3, Sylvain R T Lemoine4
1Department of Anthropology, University of California, Santa Cruz, California, USA.
American journal of biological anthropology
|June 3, 2024
概括
同位素 (87Sr/86Sr) 分析成功地确定了骨藏品中的移民雌性黑猩猩,使得分散模式的历史追踪成为可能. 这种方法有助于了解雌性黑猩猩在社区内的运动.
科学领域:
- 灵长类生态学灵长类生态学
- 古生态学 古生态学
- 同位素地球化学 同位素地球化学
背景情况:
- 黑猩猩表现出守护性的社会系统,雄性留在他们的出生群体中,雌性分散.
- 了解雌性分散的起源对于灵长类动物的行为生态学至关重要,但很难确定.
- 骨收藏提供了一个历史窗口,进入黑猩猩种群,但个人的起源往往是未知的.
研究的目的:
- 评估87Sr/86Sr分析在区分出生和移民雌性黑猩猩的有效性.
- 在泰国国家公园的黑猩猩地区建立局部 (Sr) 基线差异.
- 为了确定邻近的黑猩猩社区内未知来源的雌性动物的起源.
主要方法:
- 在泰国国家公园收集了环境和黑猩猩骨样本 (n=69).
- 使用质谱分析分析了同位素比率 (87Sr/86Sr).
- 用通用线性混合模型 (GLMMs) 来统计评估同位素比的差异,并确定分散模式.
主要成果:
- 为研究区域开发了一个局部的同位图,其根-平方平均误差为0.0048.
- 在出生和未知起源的黑猩猩群体之间发现了87Sr/86Sr比率的显著差异.
- 分析表明,1980年以后北方社区的7名来自未知的女性可能是移民 (p < 0.0001).
结论:
- 87Sr/86Sr分析是一种可行的方法,用于识别历史黑猩猩骨藏品中的移民雌性.
- 这种技术可以重建过去的雌性分散模式.
- 限制包括需要可靠的绘图,扩大环境采样,更大的样本大小,以及考虑牙形成过程.
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