Genetic diversity, evolutionary history and implications for conservation of the lion (Panthera leo) in West and Central Africa
Genetic diversity, evolutionary history and implications for conservation of the lion (Panthera leo) in West and Central Africa
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DOI：
10.1111/j.1365-2699.2011.02500.x
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发表时间：
2011-07-01
影响因子：
3.9
通讯作者：
de Iongh, H. H.
中科院分区：
文献类型：
--
作者：
Bertola, L. D.;van Hooft, W. F.;de Iongh, H. H.
近几十年来，非洲狮（Panthera leo）的数量明显下降，特别是在西非，该物种处于区域濒危状态。根据西非的气候历史，我们假设西非和中非狮子有独特的进化历史，这反映在它们的基因组成上。地点撒哈拉以南非洲和印度，特别关注西非和中非。方法在这项研究中，对狮子完整地理范围内的126个样本进行了系统发育分析。线粒体区域的DNA序列，含有细胞色素B，tRNAPro，tRNAThr和控制regions.Results的左半部分贝叶斯，最大似然和最大简约分析一致显示，狮子从西部和中部非洲和南部和东部非洲的狮子之间的区别。西非和中非狮与亚洲狮的关系比与南部和东部非洲狮的关系更密切。这可以解释为更新世的灭绝和随后西非从中东的避难所中消失。这是进一步支持的事实，即西部和中部非洲的分支显示相对较少的遗传多样性，因此被认为是一个进化上年轻的clade.Main结论非洲和亚洲亚种之间的分类划分不完全反映狮子的整体遗传多样性。为了保护物种内的遗传多样性，应优先考虑遗传上不同的谱系。了解遗传多样性的地理格局是制定保护战略的关键，无论是在原地管理和圈养种群的繁殖。
Aim In recent decades there has been a marked decline in the numbers of African lions (Panthera leo), especially in West Africa where the species is regionally endangered. Based on the climatological history of western Africa, we hypothesize that West and Central African lions have a unique evolutionary history, which is reflected by their genetic makeup.Location Sub-Saharan Africa and India, with special focus on West and Central Africa.Method In this study 126 samples, throughout the lion's complete geographic range, were subjected to phylogenetic analyses. DNA sequences of a mitochondrial region, containing cytochrome b, tRNAPro, tRNAThr and the left part of the control region, were analysed.Results Bayesian, maximum likelihood and maximum parsimony analyses consistently showed a distinction between lions from West and Central Africa and lions from southern and East Africa. West and Central African lions are more closely related to Asiatic lions than to the southern and East African lions. This can be explained by a Pleistocene extinction and subsequent recolonization of West Africa from refugia in the Middle East. This is further supported by the fact that the West and Central African clade shows relatively little genetic diversity and is therefore thought to be an evolutionarily young clade.Main conclusions The taxonomic division between an African and an Asian subspecies does not fully reflect the overall genetic diversity within lions. In order to conserve genetic diversity within the species, genetically distinct lineages should be prioritized. Understanding the geographic pattern of genetic diversity is key to developing conservation strategies, both for in situ management and for breeding of captive stocks.