Longevity, body dimension and reproductive mode drive differences in aquatic versus terrestrial life-history strategies
Longevity, body dimension and reproductive mode drive differences in aquatic versus terrestrial life-history strategies
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DOI：
10.1111/1365-2435.13604
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发表时间：
2020-06-21
影响因子：
5.2
通讯作者：
Salguero-Gomez, Roberto
中科院分区：
文献类型：
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作者：
Capdevila, Pol;Beger, Maria;Salguero-Gomez, Roberto
水生和陆地环境在关键环境因素和系统发育组成方面表现出明显的差异，但它们对物种生活史策略进化的影响仍然知之甚少。在这里，我们研究陆生和水生物种的生活史策略是否以及如何不同。我们使用685个陆生和122个水生动植物物种的人口统计信息来估计关键的生活史特征。然后，我们使用系统发育校正的最小二乘回归来探索两种环境之间生活史特征之间的潜在差异。我们在主成分分析中比较了水生和陆生物种的生活史策略，同时考虑了身体尺寸和系统发育关系。我们的结果表明，同样的权衡构成了陆地和水生生命的历史，导致了描述物种生活节奏和繁殖策略的两个主要变化轴。陆生植物表现出很大的多样性，包括本研究中最长寿的物种。水生动物表现出比陆地动物更高的繁殖频率。在校正身体大小时，移动的和固定的陆生生物表现出比水生生物更慢的生活节奏。水生和陆生物种受相同的生活史权衡所支配，但进化出不同的策略，可能是由于不同的环境选择压力。这种截然不同的生活史策略对水生和陆地物种的保护和管理具有重要影响。免费的简单语言摘要可以在本文的支持信息中找到。
Aquatic and terrestrial environments display stark differences in key environmental factors and phylogenetic composition but their consequences for the evolution of species' life-history strategies remain poorly understood. Here, we examine whether and how life-history strategies vary between terrestrial and aquatic species. We use demographic information for 685 terrestrial and 122 aquatic animal and plant species to estimate key life-history traits. We then use phylogenetically corrected least squares regression to explore potential differences in trade-offs between life-history traits between both environments. We contrast life-history strategies of aquatic versus terrestrial species in a principal component analysis while accounting for body dimensions and phylogenetic relationships. Our results show that the same trade-offs structure terrestrial and aquatic life histories, resulting in two dominant axes of variation that describe species' pace of life and reproductive strategies. Terrestrial plants display a large diversity of strategies, including the longest-lived species in this study. Aquatic animals exhibit higher reproductive frequency than terrestrial animals. When correcting for body size, mobile and sessile terrestrial organisms show slower paces of life than aquatic ones. Aquatic and terrestrial species are ruled by the same life-history trade-offs, but have evolved different strategies, likely due to distinct environmental selective pressures. Such contrasting life-history strategies have important consequences for the conservation and management of aquatic and terrestrial species. A freePlain Language Summarycan be found within the Supporting Information of this article.