马达加斯加特有的贝曼吉德属(无患子科)的分类学修订,并描述了第二个种

Q2 Agricultural and Biological Sciences
Carlos G. Boluda, Aina Randriarisoa, Y. Naciri, Laurent Gautier
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引用次数: 0

摘要

Bemangidia L.Gaut.(无患子科)是马达加斯加东南部低地常绿湿润森林中一个有限地区特有的属。该属于 2013 年发表,以容纳一个未被描述的物种,即 Bemangidia lowryi L.Gaut.,该物种显示出无患子科特有的特征组合。在描述该物种时,人们已经知道来自同一地点但生长在海拔略高的山脊上的三个非典型采集物。虽然与 Bemangidia 属非常吻合,但它们在表型上与 B. lowryi 不同,因此未被纳入物种描述。在本研究中,我们结合形态学和基于 638 个核基因的遗传数据,对这些标本是否对应于一个新物种进行了评估。结果表明,Bemangidia 包含两个世系,每个世系对应不同的形态,其遗传分支长度与山榄科其他属的物种对中观察到的分支长度相似。我们的结论是,遗传和形态上的差异足以将这两个系视为两个不同的种。因此,我们在此对该属进行了修订,并描述了第二个种。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A TAXONOMIC REVISION OF THE MADAGASCAR-ENDEMIC GENUS BEMANGIDIA (SAPOTACEAE), WITH DESCRIPTION OF A SECOND SPECIES
Bemangidia L.Gaut. (Sapotaceae) is a genus endemic to a restricted area in the southeastern lowland moist evergreen forests of Madagascar. It was published in 2013 to accommodate an undescribed species, Bemangidia lowryi L.Gaut., which showed a combination of characters unique in the family Sapotaceae. At the time of description, three atypical collections from the same locality but growing on a ridge, slightly higher in altitude, were already known. Although matching well with the Bemangidia genus, they were phenotypically different from B. lowryi and were therefore not included in the species description. In the present study, we evaluate whether these specimens correspond to a new species, using a combination of morphological and genetic data based on 638 nuclear genes. The results show that Bemangidia contains two lineages, each one corresponding to a different morphology, with a genetic branch length similar to those observed among species pairs in other genera of Sapotaceae. We conclude that the genetic and  morphological differences are sufficient to consider the two lineages as two distinct species. Consequently, the genus is here revised and a second species described.
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来源期刊
Edinburgh Journal of Botany
Edinburgh Journal of Botany Agricultural and Biological Sciences-Plant Science
自引率
0.00%
发文量
22
期刊介绍: Edinburgh Journal of Botany is an international journal of plant systematics covering related aspects of biodiversity, conservation science and phytogeography for plants and fungi. The journal is a particularly valued forum for research on South East and South West Asian, Sino-Himalayan and Brazilian biodiversity. The journal also publishes important work on European, Central American and African biodiversity and encourages submissions from throughout the world. Commissioned book reviews are also included. All papers are peer reviewed and an international editorial board provides a body of expertise to reflect the wide range of work published and the geographical spread of the journal’s authors and readers. Published on behalf of the Royal Botanic Garden Edinburgh
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