“Isolation by Gentes with Asymmetric Migration”shapes the genetic structure of the common cuckoo in China  

作　　者：Ning WANG Chengbin SHAN Dan CHEN Yunbiao HU Yuehua SUN Ying WANG Bin LIANG Wei LIANG 

机构地区：[1]School of Life Sciences,Inner Mongolia University,Hohhot,China [2]Key Laboratory of Animal Ecology and Conservation Biology,Institute of Zoology,Chinese Academy of Sciences,Beijing,China [3]Ministry of Education Key Laboratory for Ecology of Tropical Islands,Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province,College of Life Sciences,Hainan Normal University,Haikou,China [4]Inner Mongolia Engineering Technology Research Center of Germplasm Resources Conservation and Utilization,Hohhot,China

出　　处：《Integrative Zoology》2025年第1期144-159,共16页整合动物学(英文版)

基　　金：funded by the National Natural Science Foundation of China(32170460 and 31360510 to N.W.,31301894 to B.L.,and 31970427 and 32270526 to W.L.);supported by the Outstanding Young Scientist Project of Natural Science Foundation of Inner Mongolia(2022JQ07);a Cultivation Project of Inner Mongolia University(21221505);supported by the Young Science and Technology Talents Program for Universities in Inner Mongolia(NJYT23087);supported by the specific research fund of The Innovation Platform for Academicians of Hainan Province.

摘　　要：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 geneflow 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 performflexible 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.

关 键 词：STRUCTURE INCOMPLETE maintained 

分 类 号：TN3[电子电信—物理电子学]