Size, microhabitat, and loss of larval feeding drive cranial diversification in frogs.
Size, microhabitat, and loss of larval feeding drive cranial diversification in frogs.
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DOI：
10.1038/s41467-021-22792-y
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发表时间：
2021-05-04
影响因子：
16.6
通讯作者：
Goswami A
中科院分区：
文献类型：
--
作者：
Bardua C;Fabre AC;Clavel J;Bon M;Das K;Stanley EL;Blackburn DC;Goswami A
栖息地是形成生物形态的最重要因素之一，但它可能在生命史的各个阶段有所不同。生态学的个体发生变化可能会引入对抗性选择，从而限制成虫表型，特别是在生态上不同的发育阶段，如许多青蛙的自由生活、摄食幼虫阶段（无尾目：无尾目）。我们测试了发育和生态因素对成年颅骨形态多样化的相对影响，详细分析了173种非人动物的15个个体颅骨区域，代表了每个现存的科。颅骨大小、成虫微生境、幼虫摄食和骨化时间都是影响蛙类颅骨进化的重要因素，其中晚期骨化因素差异最大，进化速度最快。尺寸和微生境对颅骨形状的影响最大，我们确定了一种“大尺寸宽颅骨”模式，可能是两栖动物的进化异速。窝栖和水生微生境在形态空间上占有明显的区域，且演化快，差异大。有和没有摄食幼虫的类群在颅骨形态上没有显著差异。然而，主动摄食幼虫期的丧失与更高的进化速率和差异有关，这表明在个体发育早期经历的功能压力显著影响成虫的形态进化。变质物种的进化可能受到幼虫期和成虫期不同生态环境的制约。在这里，Bardua等人表明，在青蛙的头骨进化中，成年生态学比幼虫生态学更重要，但不以蝌蚪为食的物种比以蝌蚪为食的物种进化得更快。
Habitat is one of the most important factors shaping organismal morphology, but it may vary across life history stages. Ontogenetic shifts in ecology may introduce antagonistic selection that constrains adult phenotype, particularly with ecologically distinct developmental phases such as the free-living, feeding larval stage of many frogs (Lissamphibia: Anura). We test the relative influences of developmental and ecological factors on the diversification of adult skull morphology with a detailed analysis of 15 individual cranial regions across 173 anuran species, representing every extant family. Skull size, adult microhabitat, larval feeding, and ossification timing are all significant factors shaping aspects of cranial evolution in frogs, with late-ossifying elements showing the greatest disparity and fastest evolutionary rates. Size and microhabitat show the strongest effects on cranial shape, and we identify a “large size-wide skull” pattern of anuran, and possibly amphibian, evolutionary allometry. Fossorial and aquatic microhabitats occupy distinct regions of morphospace and display fast evolution and high disparity. Taxa with and without feeding larvae do not notably differ in cranial morphology. However, loss of an actively feeding larval stage is associated with higher evolutionary rates and disparity, suggesting that functional pressures experienced earlier in ontogeny significantly impact adult morphological evolution. The evolution of metamorphic species may be constrained by different ecologies of the larval and adult stages. Here, Bardua et al. show that in frogs, adult ecology is more important than larval ecology for skull evolution, but species that don’t feed as tadpoles evolve faster than those that do.
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影响因子：
2.1
作者：
Collar DC;Schulte JA 2nd;O'Meara BC;Losos JB
通讯作者：
Losos JB
影响因子：
2.8
作者：
Carreno, Carrie A.;Nishikawa, Kiisa C.
通讯作者：
Nishikawa, Kiisa C.
DOI：
10.1073/pnas.050501097
发表时间：
2000-03-14
影响因子：
11.1
作者：
Callery, EM;Elinson, RP
通讯作者：
Elinson, RP
颅骨进化所揭示的蛇的生态起源。
影响因子：
16.6
作者：
Da Silva FO;Fabre AC;Savriama Y;Ollonen J;Mahlow K;Herrel A;Müller J;Di-Poï N
通讯作者：
Di-Poï N
影响因子：
1.5
作者：
Bardua, C.;Felice, R. N.;Goswami, A.
通讯作者：
Goswami, A.