"Isolation by Gentes with Asymmetric Migration" shapes the genetic structure of the common cuckoo in China.

IF 3.5 1区 生物学 Q1 ZOOLOGY Integrative zoology Pub Date : 2024-06-13 DOI:10.1111/1749-4877.12853
Ning Wang, Chengbin Shan, Dan Chen, Yunbiao Hu, Yuehua Sun, Ying Wang, Bin Liang, Wei Liang
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Abstract

Amid coevolutionary arms races between brood parasitic birds and their diverse host species, the formation of host-specific races, or gentes, has drawn significant research focus. Nevertheless, numerous questions about gentes evolutionary patterns persist. Here, we investigated the potential for gentes evolution across multiple common cuckoo (Cuculus canorus) populations parasitizing diverse host species in China. Using maternal (mitochondrial and W-linked DNA) and biparental (autosomal and Z-linked DNA) markers, we found consistent clustering of cuckoo gentes (rather than geographical populations) into distinct clades in matrilineal gene trees, indicating robust differentiation. In contrast, biparental markers indicated intermixing of all gentes, suggesting asymmetric gene flow regardless of geography. Unlike the mitonuclear discordance commonly resulting from incomplete lineage sorting, adaptive introgression, or demographic disparities, the observed pattern in brood parasitic cuckoos might reflect biased host preferences between sexes. We hereby present the "Isolation by Gentes with Asymmetric Migration" model. According to this model, the maternal line differentiation of the common cuckoo in China is potentially driven by host preferences in females, whereas males maintained the integrity of the cuckoo species through random mating. To achieve this, cuckoo males could perform flexible migration among gentes or engage in early copulation with females before reaching the breeding sites, allowing female cuckoos to store sperm from various gentes. Future studies collecting additional samples from diverse cuckoo gentes with overlapping distribution and investigating the migratory and copulation patterns of each sex would enhance our understanding of sex-biased differentiation among cuckoo populations in China.

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"基因隔离与非对称迁移 "塑造了中国布谷鸟的基因结构。
在育雏寄生鸟类与其不同宿主物种之间的共同进化军备竞赛中,宿主特异性种族(或称 "种群")的形成引起了大量研究的关注。然而,关于 "种群 "进化模式的许多问题依然存在。在这里,我们研究了寄生在中国不同宿主物种上的多个杜鹃种群的雌雄进化潜力。通过使用母系(线粒体和 W 连锁 DNA)和双亲系(常染色体和 Z 连锁 DNA)标记,我们发现布谷鸟的龙胆(而非地理种群)在母系基因树中被一致地聚类为不同的支系,这表明其分化非常稳健。与此相反,双亲标记表明所有杜鹃鸟种群相互混杂,这说明基因流动不对称,与地理位置无关。有丝分裂核不一致通常是由不完全的血统分类、适应性引种或人口统计学差异造成的,与此不同的是,在雏鸟寄生杜鹃中观察到的模式可能反映了两性之间对宿主的偏好。在此,我们提出了 "非对称迁移的种系隔离 "模型。根据该模型,中国布谷鸟的母系分化可能是由雌性的寄主偏好驱动的,而雄性则通过随机交配来维持布谷鸟物种的完整性。为此,杜鹃雄鸟可以在不同雌鸟之间进行灵活迁移,或者在到达繁殖地之前与雌鸟进行早期交配,从而使雌鸟能够储存来自不同雌鸟的精子。未来的研究将从分布重叠的不同杜鹃雌雄种群中收集更多的样本,并调查雌雄杜鹃的迁徙和交配模式,这将加深我们对中国杜鹃种群性别分化的理解。
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来源期刊
CiteScore
6.40
自引率
12.10%
发文量
81
审稿时长
>12 weeks
期刊介绍: The official journal of the International Society of Zoological Sciences focuses on zoology as an integrative discipline encompassing all aspects of animal life. It presents a broader perspective of many levels of zoological inquiry, both spatial and temporal, and encourages cooperation between zoology and other disciplines including, but not limited to, physics, computer science, social science, ethics, teaching, paleontology, molecular biology, physiology, behavior, ecology and the built environment. It also looks at the animal-human interaction through exploring animal-plant interactions, microbe/pathogen effects and global changes on the environment and human society. Integrative topics of greatest interest to INZ include: (1) Animals & climate change (2) Animals & pollution (3) Animals & infectious diseases (4) Animals & biological invasions (5) Animal-plant interactions (6) Zoogeography & paleontology (7) Neurons, genes & behavior (8) Molecular ecology & evolution (9) Physiological adaptations
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