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Body condition of mule deer in the Sonoran Desert is related to rainfall

机译:索诺兰沙漠中m鹿的身体状况与降雨有关

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摘要

We investigated associations between rainfall and body condition of desert mule deer (Odocoileus homionus eremicus) in the Sonoran Desert, California, using two indices of condition based oil body fat: a categorical score based oil subcutaneous fat and visibility of bones under the skill of freeranging animals via remote photography, and percent fat in the marrow of long-bones of harvested males. There were positive correlations between rainfall and proportion of deer in good condition (r = 0.60, P = 0.064) and proportion of deer in fair condition (r = 0.70, P = 0.017). Proportion of deer in poor condition was negatively correlated with rainfall (r = -0.72, P = 0.020). There was evidence of a year effect oil percent fat in the marrow of metacarpus and metatarsus bones (P = 0.030), such that years in which deer had lower average marrow fat coincided with years having lower rainfall. These findings demonstrate the importance of rainfall, likely operating through quantity or quality of forage, on body condition of mule deer, which have subsequent effects oil demography. An understanding of these patterns will continue to be important for the conservation of ungulate populations in arid regions.
机译:我们使用两种基于状况的油性体脂指标调查了加利福尼亚州索诺兰沙漠中降雨与沙漠m鹿(Odocoileus homionus eremicus)身体状况之间的关联,该指标基于状况的油性体脂:基于分类评分的油性皮下脂肪和在自由放养下的骨骼可见度通过远程摄影拍摄的动物,以及收获的雄性长骨骨髓中的脂肪百分比。降雨与状况良好的鹿比例(r = 0.60,P = 0.064)和状况良好的鹿比例(r = 0.70,P = 0.017)之间存在正相关。状况不佳的鹿比例与降雨量呈负相关(r = -0.72,P = 0.020)。有证据表明,一年会影响掌骨和tar骨的骨髓中的脂肪百分比(P = 0.030),因此,鹿的平均骨髓脂肪含量较低的年份与降雨量较低的年份吻合。这些发现表明降雨对importance鹿的身体状况的重要性,很可能是通过饲料的数量或质量来进行的,这会对油类人口统计学产生后续影响。对这些模式的理解对于保护干旱地区的有蹄类动物种群将继续具有重要意义。

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