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Locomotory mode transitions alter phenotypic evolution and lineage diversification in an ecologically rich clade of mammals
Evolution ( IF 3.1 ) Pub Date : 2021-01-03 , DOI: 10.1111/evo.14156
Jonathan A Nations 1, 2 , Genevieve G Mount 1, 2 , Sara M Morere 1 , Anang S Achmadi 3 , Kevin C Rowe 4 , Jacob A Esselstyn 1, 2
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The relationship between organismal function and form is a cornerstone of biology because functional diversity is key to generating and maintaining ecological diversity. Morphological changes often occur in unison with behavioral or ecological transitions, and this process may foster diversification, but alternately could trap a species on an adaptive peak. We estimated the most comprehensive phylogenetic hypothesis of Murinae, a young (∼15 My) and diverse (∼700 species) clade of mammals. We then tested for correlated evolution among four morphological traits with potential links to locomotor modes (Arboreal, General, Terrestrial, and Amphibious), then investigated the effects of locomotion on morphological and lineage diversification. We found unique combinations of trait values for each locomotor mode, including strong covariance between the tail and hind foot lengths of specialized Arboreal and ecologically flexible General species. Low diversification rates and long branch lengths suggest that specialized lineages represent stable evolutionary "cul-de-sacs". General species, characterized by the classic "rat-like" body plan and broad locomotor abilities, have narrow optimal trait values and slow phenotypic evolution, but high lineage diversification rates. Our findings suggest that versatile, generalist forms act as seeds of species diversity and morphological specialization, which together build ecologically diverse radiations. This article is protected by copyright. All rights reserved.

中文翻译:

运动模式转变改变生态丰富的哺乳动物进化枝的表型进化和谱系多样化

生物体功能与形态之间的关系是生物学的基石,因为功能多样性是产生和维持生态多样性的关键。形态变化通常与行为或生态转变同时发生,这个过程可能会促进多样化,但也可能将一个物种困在一个适应高峰上。我们估计了 Murinae 最全面的系统发育假说,这是一个年轻的 (~15 My) 和多样化的 (~700 种) 哺乳动物进化枝。然后,我们测试了与运动模式(树栖、一般、陆地和两栖)有潜在联系的四种形态特征之间的相关进化,然后研究了运动对形态和谱系多样化的影响。我们为每种运动模式找到了独特的特征值组合,包括特殊树栖和生态灵活的一般物种的尾巴和后足长度之间的强协方差。低多样化率和长分支长度表明专门的谱系代表稳定的进化“死胡同”。一般物种的特点是经典的“大鼠状”身体结构和广泛的运动能力,具有狭窄的最佳特征值和缓慢的表型进化,但谱系多样化率高。我们的研究结果表明,多才多艺的形式是物种多样性和形态专业化的种子,它们共同构建了生态多样化的辐射。本文受版权保护。版权所有。低多样化率和长分支长度表明专门的谱系代表稳定的进化“死胡同”。一般物种的特点是经典的“大鼠状”身体结构和广泛的运动能力,具有狭窄的最佳特征值和缓慢的表型进化,但谱系多样化率高。我们的研究结果表明,多才多艺的形式是物种多样性和形态专业化的种子,它们共同构建了生态多样化的辐射。本文受版权保护。版权所有。低多样化率和长分支长度表明专门的谱系代表稳定的进化“死胡同”。一般物种的特点是经典的“大鼠状”身体结构和广泛的运动能力,具有狭窄的最佳特征值和缓慢的表型进化,但谱系多样化率高。我们的研究结果表明,多才多艺的形式是物种多样性和形态专业化的种子,它们共同构建了生态多样化的辐射。本文受版权保护。版权所有。但血统多样化率高。我们的研究结果表明,多才多艺的形式是物种多样性和形态专业化的种子,它们共同构建了生态多样化的辐射。本文受版权保护。版权所有。但血统多样化率高。我们的研究结果表明,多才多艺的形式是物种多样性和形态专业化的种子,它们共同构建了生态多样化的辐射。本文受版权保护。版权所有。
更新日期:2021-01-03
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