Interspecific hybridization explains rapid gorget colour divergence in Heliodoxa hummingbirds (Aves: Trochilidae).
Interspecific hybridization explains rapid gorget colour divergence in Heliodoxa hummingbirds (Aves: Trochilidae).
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DOI：
10.1098/rsos.221603
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发表时间：
2023-03
影响因子：
3.5
通讯作者：
Bates, John M.
中科院分区：
文献类型：
--
作者：
Eliason, Chad M.;Cooper, Jacob C.;Hackett, Shannon J.;Zahnle, Erica;Pequeno Saco, Tatiana Z.;Maddox, Joseph Dylan;Hains, Taylor;Hauber, Mark E.;Bates, John M.
杂交是许多生物体形态、功能和通讯信号新颖性的已知来源。尽管在自然种群中已经确定了已建立的新型装饰的多种机制，但我们对跨生物尺度水平和系统发育的杂交效应缺乏了解。由于羽毛纳米结构的相干光散射，蜂鸟表现出多种结构颜色。鉴于羽毛纳米结构与其产生的颜色之间的复杂关系，中间着色并不一定意味着中间纳米结构。在这里，我们描述了来自秘鲁东部山麓的独特 Heliodoxa 蜂鸟的纳米结构、生态和遗传输入。从基因上看，该个体与黑夜蛾和红夜蛾密切相关，但在评估核数据时，它与两者都不相同。种间杂合性升高进一步表明它是与 H. branickii 的杂种回交。这个独特个体的电子显微镜和分光光度法揭示了其独特的喉部颜色背后的关键纳米结构差异，光学模型证实了这一点。系统发育比较分析表明，观察到的从父母双方到该个体的眼镜颜色差异需要 6.6-10 My 才能在单个蜂鸟谱系中以目前的速度进化。这些结果强调了杂交的镶嵌性质，并表明杂交可能有助于蜂鸟的结构颜色多样性。
Hybridization is a known source of morphological, functional and communicative signal novelty in many organisms. Although diverse mechanisms of established novel ornamentation have been identified in natural populations, we lack an understanding of hybridization effects across levels of biological scales and upon phylogenies. Hummingbirds display diverse structural colours resulting from coherent light scattering by feather nanostructures. Given the complex relationship between feather nanostructures and the colours they produce, intermediate coloration does not necessarily imply intermediate nanostructures. Here, we characterize nanostructural, ecological and genetic inputs in a distinctive Heliodoxa hummingbird from the foothills of eastern Peru. Genetically, this individual is closely allied with Heliodoxa branickii and Heliodoxa gularis, but it is not identical to either when nuclear data are assessed. Elevated interspecific heterozygosity further suggests it is a hybrid backcross to H. branickii. Electron microscopy and spectrophotometry of this unique individual reveal key nanostructural differences underlying its distinct gorget colour, confirmed by optical modelling. Phylogenetic comparative analysis suggests that the observed gorget coloration divergence from both parentals to this individual would take 6.6–10 My to evolve at the current rate within a single hummingbird lineage. These results emphasize the mosaic nature of hybridization and suggest that hybridization may contribute to the structural colour diversity found across hummingbirds.
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影响因子：
5.8
作者：
Caparros M;Prat S
通讯作者：
Prat S
影响因子：
3.3
作者：
Clark, Christopher J.;McGuire, Jimmy A.;Prum, Richard O.
通讯作者：
Prum, Richard O.
影响因子：
3.3
作者：
Eliason, Chad M.;Maia, Rafael;Shawkey, Matthew D.
通讯作者：
Shawkey, Matthew D.
DOI：
10.2988/0006-324x(2006)119
发表时间：
2006-12-22
影响因子：
0.5
作者：
Campos, Martha R.;Pedraza, Manuel
通讯作者：
Pedraza, Manuel
影响因子：
4.9
作者：
Harrison RG;Larson EL
通讯作者：
Larson EL