Data from: Disentangling the dynamics among climate, food availability, and reproduction in a pair-living, monogamous primate

We examined the hypothesis that pair-living, monogamous social systems evolved in environments with evenly distributed food resources, a homogenous distribution of females in space prevents males from monopolizing more than one female. Our study investigated the interplay between climatic variables (ambient temperature, rainfall), food availability (forest structure, phenology data), and infant production in a pair-living monogamous owl monkey population (322 births, 21 years, 22 groups) in the humid Chaco of Argentina. Associations between climatology and fruit availability ranged from -0.29 to 0.38, and some extreme events negatively impacted fruit availability. Variation in fruit availability was higher among years than territories, whereas infant production varied more among territories than it did across years. Our study makes specific contributions to examining the hypothetical "homogeneity" in the temporal and spatial distribution of food available to a pair-living monogamous primate and how such variation relates to infant production in the population.

我们检验了如下研究假说：成对生活的一夫一妻制社会体系演化于食物资源均匀分布的环境中——由于雌性在空间上呈现均匀分布，雄性无法独占多于一只雌性个体。本研究以阿根廷湿润查科地区的成对生活一夫一妻制夜猴（owl monkey）种群为研究对象（该种群累计记录322例幼崽出生、覆盖21年研究时长、涉及22个社会群体），探讨了气候变量（环境温度、降雨量）、食物可获得性（森林结构、物候数据）与幼崽产出量之间的相互作用关系。气候条件与果实可获得性之间的相关系数范围为-0.29至0.38，部分极端事件会对果实可获得性产生负面影响。果实可获得性的年际变异程度高于领地间变异，而幼崽产出量的领地间变异程度则高于年际变异。本研究为检验“成对生活的一夫一妻制灵长类可获取食物的时空分布均匀性”这一假说，以及此类分布变异与种群幼崽产出量之间的关联，提供了针对性的学术贡献。