Are Egg Colors and Patterns Signs of Phylogenetic Relatedness in Parrotbills?
Are Egg Colors and Patterns Signs of Phylogenetic Relatedness in Parrotbills?
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DOI：
10.2326/osj.15.119
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发表时间：
2016-08
影响因子：
0.6
通讯作者：
Lijun Chen;Lei Zhu;Xiaonong Yang;Nan Lyu;Yang Liu;W. Liang;Yue-Hua Sun
中科院分区：
文献类型：
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作者：
Lijun Chen;Lei Zhu;Xiaonong Yang;Nan Lyu;Yang Liu;W. Liang;Yue-Hua Sun
摘要长期以来，鸟类学家和进化生物学家一直对鸡蛋的颜色和图案感兴趣，并提出了几种假说来解释它们。这些假说包括：华莱士假说、结构假说、幼虫寄生假说和交配后性选择信号假说。然而，这些都不足以阐明所涉及的进化机制。本研究对副鸟科鸟类的卵多态及其系统发育关系进行了研究。在与系统发育信息进行比较时，我们发现卵的颜色与副鸟科内两个与大小相关的分支相匹配。体型较大的鹦鹉所产的蛋都带有浅色背景，而体型较小的鹦鹉所产的蛋则是普通的淡蓝色。据我们所知，这是首次发现鹦鹉的卵颜色和模式与系统发育之间的关系，这表明它们受到很强的系统发育限制，可以作为系统发育关系的重要指标。
Abstract Egg colors and patterns have long been of interest for ornithologists and evolutionary biologists, with several hypotheses proposed to explain them. These include: Wallace's hypothesis, the structure hypothesis, the brood parasitism hypothesis and the post-mating sexual selection signal hypothesis. However, none of these are sufficient to elucidate the evolutionary mechanism involved. In this study, egg polymorphism and phylogenetic relationships within the avian family Paradoxornithidae were investigated. When compared with phylogenetic information, we found that egg color matched two size-related clades within the Paradoxornithidae. The larger parrotbills all lay patterned eggs with pale background colors, whereas the smaller parrotbills lay plain pale blue eggs. To our knowledge, this is the first study to detect such a relationship between egg color and pattern and phylogeny in parrotbills, suggesting that they are under strong phylogenetic constraints and can be treated as an important indicator of phylogenetic relationship.