Taxonomic implications of geographical variation in Rhinolophus affinis (Chiroptera: Rhinolophidae) in mainland Southeast Asia
Taxonomic implications of geographical variation in Rhinolophus affinis (Chiroptera: Rhinolophidae) in mainland Southeast Asia
复制标题
DOI：
10.1186/s40555-015-0109-8
复制
发表时间：
2015-02-01
影响因子：
1.6
通讯作者：
Thomas, Nikky M.
中科院分区：
文献类型：
--
作者：
Ith, Saveng;Bumrungsri, Sara;Thomas, Nikky M.
背景：广义菊头蝠分布于东南亚。由于样本量有限，数据集不完整，并且分类群在形态和回声定位呼叫频率上有很高的变化，因此归因于该物种的形式的分类地位尚不清楚。本研究的目的是评估的分布和分类地位的亚种形式的R。affinis在东南亚大陆使用大样本量与多个数据集，包括形态，声学，和遗传数据，既阐明分类关系，并测试这些datasets.Results之间的一致性：3形态形式被确认在该地区内，两个同意与以前公认的分类群，即R。affinis macrurus和R. affinis superans，并得到形态学和遗传学数据的有力支持。第三种形式在形态上是不同的，但其分类地位仍然不清楚。很可能这第三种形式代表了一个独特的分类实体;然而，需要更多的数据来证实这一点。R. a. macrurus分布于泰国半岛北部、柬埔寨、缅甸、老挝和越南（印度支那亚区）; a. superans是发现在整个泰国-马来半岛（巽他亚区）;而第三种形式是目前已知的从东中部缅甸（掸邦）和较低的北方越南（义安省）。R的回声定位呼叫数据。affinis不是一个强有力的分类工具，因为它显示了遗传和形态学发现无法解释或支持的显著程度的变异。这项研究突出了东南亚大陆形态变异的重要水平，并为进一步研究提供了必要的基础，旨在了解种群遗传学，地理学和物种分类学。
Background: Rhinolophus affinis sensu lato is distributed throughout Southeast Asia. The taxonomic status of forms attributed to the species is unclear due to the limited sample size with incomplete datasets and the taxa have high variation in morphology and echolocation call frequency. The aim of the study was to evaluate the distribution and taxonomic status of the subspecific forms of R. affinis in mainland Southeast Asia using large sample size with multiple datasets, including morphological, acoustic, and genetic data, both to elucidate taxonomic relationships and to test for congruence between these datasets.Results: Three morphological forms were confirmed within the region; two concur with previously recognized taxa, namely R. affinis macrurus and R. affinis superans, and are strongly supported by morphological and genetic data. The third form is morphologically distinct, but its taxonomic status remains unclear. It is probable that this third form represents a distinct taxonomic entity; however, more data are required to confirm this. R. a. macrurus is known from the north of peninsular Thailand, Cambodia, Myanmar, Laos, and Vietnam (Indochinese subregion); R. a. superans is found throughout the Thai- Malay Peninsula (Sundaic subregion); whilst the third form is presently known from east central Myanmar (Shan state) and lower northern Vietnam (Nghe An Province).Conclusions: Our results suggest that at least three morphological forms occur in mainland Southeast Asia including one form which appears to be new to science. Echolocation call data for R. affinis are not a robust taxonomic tool as it shows a significant degree of variation which is not explained or supported by genetic and morphological findings. This study highlights significant levels of morphological variation in mainland Southeast Asia and provides an essential basis for further studies aiming to understand the population genetics, phylogeography, and taxonomy of the species.