Male genetic structure and paternity in western lowland gorillas (Gorilla gorilla gorilla)
Male genetic structure and paternity in western lowland gorillas (Gorilla gorilla gorilla)
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DOI：
10.1002/ajpa.22312
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发表时间：
2013-08-01
影响因子：
2.8
通讯作者：
Yamagiwa, Juichi
中科院分区：
文献类型：
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作者：
Inoue, Eiji;Akomo-Okoue, Etienne Francois;Yamagiwa, Juichi
西部低地大猩猩（WLG，Gorilla gorilla gorilla）的雄性扩散模式还不清楚。为了确定是否大多数银背保持接近他们的亲戚，我们分析了常染色体和Y染色体微卫星（STR）在野生WLGs在Moukalaba，加蓬。我们获得了38个个体的STR基因型，包括8个银背和12个成年女性在大约40平方公里的区域。其中，20人是一个确定的组（组Gentil; GG）的成员，包括一个银背和六个成年女性。银背在GG中繁殖了所有13个后代，并且没有发现GG中的Y-STR多态性，正如在一个雄性群体结构中所预期的那样。在所有的银鱼样本中，考虑到有限的采样区域，Y-STR多样性较高，并且具有相似Y-STR单倍型的银鱼并不总是位于附近地区。虽然本研究中亲属关系估计的错误分类率是不可忽略的，但在所有抽样的银背鱼中没有亲属二对。这些结果表明，出生在同一群体的银背鲸在成熟后不会彼此靠近。本研究中的Y-STR多样性与之前在比我们研究区域大约150倍的区域进行的研究相似。不同样本尺度下的WLG Y-STR多样性研究之间的相似性表明，男性基因流可能不受地理限制。这些结果表明，WLG男性通常分散从他们的纳塔尔地区成熟后，至少在穆卡拉巴。(C)2013 Wiley Periodicals，Inc.
The male dispersal patterns of western lowland gorillas (WLGs, Gorilla gorilla gorilla) are not well understood. To determine whether most silverbacks stay close to their relatives, we analyzed autosomal and Y-chromosomal microsatellites (STRs) in wild WLGs at Moukalaba, Gabon. We obtained STR genotypes for 38 individuals, including eight silverbacks and 12 adult females in an approximately 40 km(2) area. Among them, 20 individuals were members of one identified group (Group Gentil; GG), including one silverback and six adult females. The silverback sired all 13 of the offspring in GG and no Y-STR polymorphism within GG was found, as expected in a one-male group structure. Over all silverbacks sampled, Y-STR diversity was high considering the limited sampling area, and silverbacks with similar Y-STR haplotypes were not always located in nearby areas. Although the misclassification rate of kinship estimates in this study was not negligible, there were no kin dyads among all silverbacks sampled. These results suggest that silverbacks born in the same group do not stay close to each other after maturation. The Y-STR diversity in this study was similar to that of a previous study conducted in an area that was approximately 150 times larger than our study area. Similarity of WLG Y-STR diversity between studies at different sampling scales suggests that male gene flow may not be geographically limited. These results suggest that WLG males normally disperse from their natal areas after maturation, at least, in Moukalaba. (C) 2013 Wiley Periodicals, Inc.