Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles).
Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles).
复制标题
DOI：
10.1111/jeb.12473
复制
发表时间：
2014-10
影响因子：
2.1
通讯作者：
Macdonald DW
中科院分区：
文献类型：
--
作者：
Annavi G;Newman C;Dugdale HL;Buesching CD;Sin YW;Burke T;Macdonald DW
群外父系关系（Extra-group paternity，EGP）在群居哺乳动物中普遍存在，在交配系统和性选择动态中起着重要作用，但EGP的社会生态学和遗传学相关性研究尚不充分。我们使用23年的人口和遗传数据，从高密度的欧洲獾（Meles meles）人口，调查EGP率在窝和交配可用性，交配不相容性和交配质量（杂合性）之间的关系。组内分配的母亲和候选人父亲之间的相关性有一个负的二次EGP的影响，而邻居组候选人父亲的数量有一个线性的积极影响。我们检测到组内候选父亲的平均或最大杂合性对EGP没有影响。因此，EGP主要与配偶的可用性，受组内遗传效应，有可能减轻配偶不相容和近亲繁殖。在獾，神秘的女性选择，促进超受精，superfoetation和延迟植入，防止男性垄断组内的女性。这与一项在群体生活的哺乳动物中进行的荟萃分析产生了共鸣，该分析提出，当组内雄性不能垄断组内雌性时，EGP发生率较高。相反，积极的荟萃分析的关联，但是，我们发现，EGP负相关组内分配的母亲和组内候选父亲的数量;潜在的策略，以对抗组内男性犯下的杀父。因此，EGP率与社会生态或遗传因素之间的关系可能是错综复杂的，在比较研究中必须考虑到潜在的神秘女性选择。
Extra-group paternity (EGP) occurs commonly among group-living mammals and plays an important role in mating systems and the dynamics of sexual selection; however, socio-ecological and genetic correlates of EGP have been underexplored. We use 23 years of demographic and genetic data from a high-density European badger (Meles meles) population, to investigate the relationship between the rate of EGP in litters and mate availability, mate incompatibility and mate quality (heterozygosity). Relatedness between within-group assigned mothers and candidate fathers had a negative quadratic effect on EGP, whereas the number of neighbouring-group candidate fathers had a linear positive effect. We detected no effect of mean or maximum heterozygosity of within-group candidate fathers on EGP. Consequently, EGP was associated primarily with mate availability, subject to within-group genetic effects, potentially to mitigate mate incompatibility and inbreeding. In badgers, cryptic female choice, facilitated by superfecundation, superfoetation and delayed implantation, prevents males from monopolizing within-group females. This resonates with a meta-analysis in group-living mammals, which proposed that higher rates of EGP occur when within-group males cannot monopolize within-group females. In contrast to the positive meta-analytic association, however, we found that EGP associated negatively with the number of within-group assigned mothers and the number of within-group candidate fathers; potentially a strategy to counter within-group males committing infanticide. The relationship between the rate of EGP and socio-ecological or genetic factors can therefore be intricate, and the potential for cryptic female choice must be accounted for in comparative studies.
登录
查看更多内容
影响因子：
3.3
作者：
Coltman, DW;Slate, J
通讯作者：
Slate, J
影响因子：
3.3
作者：
Britten, HB
通讯作者：
Britten, HB
DOI：
10.1098/rstb.1992.0157
发表时间：
1992-12-29
期刊：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
CRESSWELL, WJ;HARRIS, S;MALLINSON, PJ
通讯作者：
MALLINSON, PJ
影响因子：
2.7
作者：
DASILVA, J;WOODROFFE, R;MACDONALD, DW
通讯作者：
MACDONALD, DW
影响因子：
4.9
作者：
Cohas, Aurelie;Bonenfant, Christophe;Allaine, Dominique
通讯作者：
Allaine, Dominique