Schillaci Michael A, Castellini J Margaret, Stricker Craig A, Jones-Engel Lisa, Lee Benjamin P Y-H, O'Hara Todd M
Department of Anthropology, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada,
Primates. 2014 Jan;55(1):25-34. doi: 10.1007/s10329-013-0361-7. Epub 2013 Jun 2.
Much of the primatology literature on stable isotope ratios of carbon (δ(13)C) and nitrogen (δ(15)N) has focused on African and New World species, with comparatively little research published on Asian primates. Here we present hair δ(13)C and δ(15)N isotope values for a sample of 33 long-tailed macaques from Singapore. We evaluate the suggestion by a previous researcher that forest degradation and biodiversity loss in Singapore have led to a decline in macaque trophic level. The results of our analysis indicated significant spatial variability in δ(13)C but not δ(15)N. The range of variation in δ(13)C was consistent with a diet based on C3 resources, with one group exhibiting low values consistent with a closed canopy environment. Relative to other macaque species from Europe and Asia, the macaques from Singapore exhibited a low mean δ(13)C value but mid-range mean δ(15)N value. Previous research suggesting a decline in macaque trophic level is not supported by the results of our study.
许多关于碳（δ(13)C）和氮（δ(15)N）稳定同位素比率的灵长类动物学文献都集中在非洲和新大陆的物种上，关于亚洲灵长类动物的研究相对较少。在此，我们展示了来自新加坡的33只食蟹猴样本的毛发δ(13)C和δ(15)N同位素值。我们评估了一位先前研究人员提出的观点，即新加坡的森林退化和生物多样性丧失导致了猕猴营养级的下降。我们的分析结果表明，δ(13)C存在显著的空间变异性，而δ(15)N则没有。δ(13)C的变化范围与基于C3资源的饮食一致，其中一组的值较低，与封闭树冠环境一致。相对于来自欧洲和亚洲的其他猕猴物种，来自新加坡的猕猴平均δ(13)C值较低，但平均δ(15)N值处于中等范围。我们的研究结果不支持先前关于猕猴营养级下降的研究。
