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Anthropogenic movement results in hybridisation in impala in southern Africa
Conservation Genetics ( IF 2.2 ) Pub Date : 2020-04-28 , DOI: 10.1007/s10592-020-01276-4
Susan M. Miller , Carl-Heinz Moeller , Cindy K. Harper , Paulette Bloomer

Hybridisation caused by anthropogenic movements of animals is a conservation concern. Black-faced impala (Aepyceros melampus petersi) are endemic to north-western Namibia and south-western Angola and are geographically isolated from common impala (A. m. melampus). Common impala have been translocated into the black-faced impala range creating a hybridisation risk. We validated 13 microsatellite markers for the detection of recent hybridisation events. We used these markers to assess the genetic variation and differentiation among impala within Etosha National Park (NP), Southern Cross Private Game Reserve (SCPGR), Namibia, and private game ranches across South Africa. We confirmed that “black-nosed” impala in South Africa were A. m. melampus, thus providing more evidence that the black blaze on the face cannot be used to distinguish between the two subspecies. We detected four hybrids and one common impala on SCPGR. These five individuals were removed from SCPGR at time of sampling. We found two potential hybrids in southern Etosha NP. Further sampling of animals within Etosha NP is recommended to determine the extent of hybridisation within the park. The Namibian Ministry of the Environment & Tourism is developing a management plan for black-faced impala across Namibia that includes genetic testing for hybrids.



中文翻译:

人为运动导致南部非洲黑斑羚杂交

由动物的人为运动引起的杂交是一种保护问题。黑脸黑斑羚(Aepyceros melampus petersi)分布于纳米比亚西北部和安哥拉西南部,地理上与普通黑斑羚(A. m。melampus)隔离。普通黑斑羚已经转移到黑脸黑斑羚范围内,形成杂交风险。我们验证了13个微卫星标记,用于检测最近的杂交事件。我们使用这些标记来评估埃托沙国家公园(NP),南十字私人猎物保护区(SCPGR),纳米比亚和南非私人猎场内黑斑羚的遗传变异和分化。我们确认南非的“黑鼻”黑斑羚为A. m.。黄lamp,因此提供了更多证据,证明无法将脸上的黑色火焰用于区分这两个亚种。我们在SCPGR上检测到4种杂种和1种常见黑斑羚。在采样时,这五个人已从SCPGR中移除。我们在埃托沙NP南部发现了两个潜在的杂种。建议对Etosha NP内的动物进行进一步采样,以确定公园内的杂交程度。纳米比亚环境与旅游部正在制定一项针对纳米比亚黑脸黑斑羚的管理计划,其中包括对杂种进行基因检测。

更新日期:2020-04-28
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