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High level of extra-pair paternity in the socially monogamous marsh tits(Poecile palustris)

Avian Research 2021年第4期12卷 722-726页

作者： Juan Wang Yanhui Wei Lei Zhang Yiting Jiang Keke Li Dongmei Wan Laboratory of Animal Resource and Epidemic Disease Prevention Department of Life SciencesLiaoning UniversityShenyang 110036China

Background:Extra-pair copulation behavior has been widely studied among socially monogamous *** species revealed high rates of extra-pair *** few of the studies have been carried out in the Asian ***:From 2012 to 2019,we explored the extra-pair paternity of marsh tits(Poecile palustris)in Xianrendong National Nature Reserve,Liaoning Province,*** the study,adult marsh tits were captured with mist nets and parental birds,with nest-box *** samples were taken from the brachial *** analyses were carried out using nine highly variable microsatellite loci through Cervus 3.0 software and maximum likelihood ***:Forty-nine offspring(15.08%)from 20 nests(45.45%)were the results of extra-pair fertilization out of a total of 325 offspring in 44 *** average extra-pair offspring ratio was 33.54%,with a set varying from 11.11 to 71.43%.Nine extra-pair fathers had been successfully identified,four of whom were the close neighbors of the focus nest while the nests of the remaining five were relatively *** significant difference was found in the genetic similarity between the social and extra-pair mates of the female,nor in the heterozygosis among the maternal ***:In general,our study proved that the extra-pair paternity in marsh tits and its extra-pair mating is independent of the genetic compatibility *** complements the understudied bird's extra-pair paternity in Asian area and contributes to the comprehensive insight of birds'extra-pair paternity behaviors.

关键词： Extra-pair paternity Genetic compatibility hypothesis marsh tits Microsatellite

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