Animal life history is shaped by the pace of life and the distribution of age-specific mortality and reproduction
Animal life history is shaped by the pace of life and the distribution of age-specific mortality and reproduction
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DOI：
10.1038/s41559-019-0938-7
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发表时间：
2019-08-01
影响因子：
16.8
通讯作者：
Buckley, Yvonne M.
中科院分区：
文献类型：
--
作者：
Healy, Kevin;Ezard, Thomas H. G.;Buckley, Yvonne M.
动物的生活史策略具有非同寻常的多样性。这些实现的生存、发育和繁殖的组合预计将受到生理限制和资源分配权衡的限制。然而，我们对这些模式的理解仅限于几个分类群。使用从人类到海绵等121个物种的人口统计数据，我们测试了这种权衡是否普遍影响了动物的生活史战略。我们表明，在考虑了体重和系统发育相关性后，动物生活史策略中71%的变异可以由与快-慢连续体(生活节奏)相关的生活史特征和由特定年龄死亡危险的分布和繁殖扩散定义的第二个轴来解释。虽然我们发现生活史策略与代谢率和生命的生态模式有关，但令人惊讶的是，在动物的系统发育和生理多样性中，可以发现相似的生活史策略。
Animals exhibit an extraordinary diversity of life history strategies. These realized combinations of survival, development and reproduction are predicted to be constrained by physiological limitations and by trade-offs in resource allocation. However, our understanding of these patterns is restricted to a few taxonomic groups. Using demographic data from 121 species, ranging from humans to sponges, we test whether such trade-offs universally shape animal life history strategies. We show that, after accounting for body mass and phylogenetic relatedness, 71% of the variation in animal life history strategies can be explained by life history traits associated with the fast-slow continuum (pace of life) and with a second axis defined by the distribution of age-specific mortality hazards and the spread of reproduction. While we found that life history strategies are associated with metabolic rate and ecological modes of life, surprisingly similar life history strategies can be found across the phylogenetic and physiological diversity of animals.