期刊
ORNITHOLOGY
卷 138, 期 3, 页码 -出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/ornithology/ukab015
关键词
Andes; biogeography; Diglossa; disjunct populations; speciation
类别
资金
- Alexander von Humboldt Institute [13-13-014-347CE]
- Universidad de Antioquia [13-13-014-347CE]
- Grupo de Ecologia y Evolucion de Vertebrados at Universidad de Antioquia
Disjunct distributions within a species can act as a barrier to gene flow and lead to speciation. Analysis of geographic differentiation and molecular data of Diglossa brunneiventris revealed that the two subspecies are more closely related to other species within the carbonaria complex and occupy different climatic niches. This suggests the potential presence of more cryptic species within the carbonaria complex and the need for reevaluating the taxonomic status of the brunneiventris populations.
Disjunct distributions within a species are of great interest in systematics and biogeography. This separation can function as a barrier to gene flow when the distance among populations exceeds the dispersal capacity of individuals, and depending on the duration of the barrier, it may eventually lead to speciation. Here, we describe patterns of geographic differentiation of 2 disjunct populations of Diglossa brunneiventris separated by similar to 1,000 km along the Andes. Diglossa brunneiventris vuilleumieri is isolated in northern Colombia, while Diglossa brunneiventris brunneiventris has a seemingly continuous distribution across Peru, Bolivia, and Chile. We sequenced mitochondrial and nuclear DNA of the 2 D. brunneiventris subspecies to evaluate whether they form a monophyletic clade, while including the other 3 species within the carbonaria complex (D. gloriosa, D. humeralis, and D. carbonaria). We also constructed ecological niche models for each D. brunneiventris subspecies to compare their climatic niches. We found that when using all available molecular data, the 2 D. brunneiventris subspecies are not sister lineages. In fact, each subspecies is more closely related to other species in the carbonaria complex. Our niche modeling analyses showed that the subspecies are occupying almost entirely different climatic niches. An additional and not expected result was that the carbonaria complex might encompass more cryptic species than previously considered. We suggest reevaluating the taxonomic status of these brunneiventris populations, especially the northern subspecies, given its highly restricted range and potential threatened status.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据