Intense natural selection preceded the invasion of new adaptive zones during the radiation of New World leaf-nosed bats.
Intense natural selection preceded the invasion of new adaptive zones during the radiation of New World leaf-nosed bats.
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DOI：
10.1038/s41598-017-08989-6
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发表时间：
2017-09-11
影响因子：
4.6
通讯作者：
Marroig G
中科院分区：
文献类型：
--
作者：
Rossoni DM;Assis APA;Giannini NP;Marroig G
叶口科 (Phyllostomidae) 在过去 3000 万年里在新大陆进化而来，是最大、形态最多样化的哺乳动物科之一。由于其独特的多样化功能形态，叶口动物头骨被认为是在强烈的方向选择下进化的。然而，对这一非凡谱系的选择强度的定量估计尚未见报道。在这里，我们使用比较定量遗传学方法来阐明驱动叶状动物颅骨进化的过程。我们还量化了选择的强度，并探索了其与叶口动物系统发育的饮食转变和专业化的关系。我们的结果表明，自然选择是叶口蝙蝠颅骨多样化的进化过程。值得注意的是，叶口蝙蝠的系统发育中最强的选择与饮食专门化和新的进食习惯的起源有关，这表明叶口蝙蝠的适应性多样化是由生态机会触发的。这些发现与辛普森适应区之间转变的量子进化模型一致。本研究中使用的多变量分析为理解进化过程在微观和宏观进化尺度上塑造任何群体的表型多样性方面的作用提供了强大的工具。
The family Phyllostomidae, which evolved in the New World during the last 30 million years, represents one of the largest and most morphologically diverse mammal families. Due to its uniquely diverse functional morphology, the phyllostomid skull is presumed to have evolved under strong directional selection; however, quantitative estimation of the strength of selection in this extraordinary lineage has not been reported. Here, we used comparative quantitative genetics approaches to elucidate the processes that drove cranial evolution in phyllostomids. We also quantified the strength of selection and explored its association with dietary transitions and specialization along the phyllostomid phylogeny. Our results suggest that natural selection was the evolutionary process responsible for cranial diversification in phyllostomid bats. Remarkably, the strongest selection in the phyllostomid phylogeny was associated with dietary specialization and the origination of novel feeding habits, suggesting that the adaptive diversification of phyllostomid bats was triggered by ecological opportunities. These findings are consistent with Simpson’s quantum evolutionary model of transitions between adaptive zones. The multivariate analyses used in this study provides a powerful tool for understanding the role of evolutionary processes in shaping phenotypic diversity in any group on both micro- and macroevolutionary scales.
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影响因子：
3.3
作者：
CHEVERUD, JM
通讯作者：
CHEVERUD, JM
影响因子：
2.8
作者：
Ackermann, RR;Cheverud, JM
通讯作者：
Cheverud, JM
影响因子：
2.1
作者：
Hansen, T. F.;Houle, D.
通讯作者：
Houle, D.
影响因子：
2.9
作者：
ARNOLD, SJ
通讯作者：
ARNOLD, SJ
DOI：
10.1078/0944-2006-00006
发表时间：
2001-01-01
期刊：
ZOOLOGY-ANALYSIS OF COMPLEX SYSTEMS
影响因子：
--
作者：
Cruz-Neto, AP;Garland, T;Abe, AS
通讯作者：
Abe, AS