Latitudinal variations in incubation behaviour among uniparental incubating birds
Ting Jin, Qian Hu, Yating Liu, Jianqiang Li, Shengkai Pan, Jiliang Xu
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单代孵化鸟类孵化行为的纬度差异。
单代孵化的鸟类必须在自我维持和孵化之间做出权衡。这种平衡表现为不同物种和地理区域之间的孵化行为差异很大。然而,有限的研究已经检查了不同物种和地区的孵化行为的可变性。利用贝叶斯系统发育混合模型,研究了201种单育鸟类的三种孵育行为(非孵育频率、非孵育持续时间和孵育稳定性)随纬度的变化。我们的研究结果揭示了不同纬度的单亲鸟类采用不同的孵化策略。低纬度地区的物种表现出较少的突变,同时,突变持续时间更长。相反,高纬度地区的动物表现出更频繁但更短的突变。值得注意的是,孵化恒常性出现了明显的纬度依赖模式,纬度越高,孵化恒常性越大。此外,体型较小的鸟类往往更频繁地外出。在不同的生境中,非回合频率存在显著差异。与杂食性和肉食性鸟类相比,草食性鸟类的孵化稳定性更高。这些发现提供了有价值的见解,纬度变化的关系与生命历史的进化动力学在单亲孵化的鸟类。
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