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De Chen Qiong Liu Jiang Chang Aiwu Jiang Fang Zhou Yanyun Zhang Zhengwang Zhang 《ZooKeys》2016,(555):125-136
The taxonomic status of subspecies has long been debated, especially in conservation biology. Some proposed subspecies must be evolutionarily distinct to be considered conservation units. White-necklaced Partridge (Arborophila
gingica) comprises two subspecies, Arborophila
gingica
gingica and Arborophila
gingica
guangxiensis. Arborophila
gingica
guangxiensis, restricted to three isolated small areas in Guangxi, China, with limited population sizes, is a newly discovered subspecies based on recently identified geographic and phenotypic differences between Arborophila
gingica
gingica; however, evidence is lacking that can effectively identify whether the subspecies is evolutionarily distinct. Here, three mitochondrial DNA segments and four nuclear introns were used to test whether the two subspecies are reciprocally monophyletic, which has been proposed as an objective method to evaluate evolutionary distinctiveness. The results indicate that the two subspecies are genetically divergent and form reciprocal monophyletic groups. Therefore, this study further supports the taxonomic validity and distinctiveness of Arborophila
gingica
guangxiensis and suggests that this subspecies be considered as a conservation unit. 相似文献