Comparative phylogeography of bamboo bats of the genus Tylonycteris (Chiroptera, Vespertilionidae) in Southeast Asia

Abstract

D N A L i b r a r y o f L i f e , r e s e a r c h a r t i c l eurn:lsid:zoobank.org:pub:DEFAD552-9C2E-497B-83CA-1E04E3353EA4 Abstract. In Southeast Asia, bats of the genus Tylonycteris Peters, 1872 have traditionally been classified into two wide-ranging species, T. pachypus (Temminck, 1840) and T. robustula Thomas, 1915. Our comparative phylogeographic analyses based on two mitochondrial and seven nuclear genes, combined with our multivariate morphological analyses, show that these species actually represent cryptic species complexes that share a similar biogeographic history in three major regions, i.e., Sundaland, southern European Journal of Taxonomy 274: 1-38 (2017) 2 Indochina, and northern Indochina. Our molecular dating estimates suggest that Pleistocene climatic oscillations and sea level changes have repeatedly isolated ancestral populations of Tylonycteris spp. in distant bamboo forest refugia. The analyses indicate, however, that populations of the T. pachypus complex were less affected by forest fragmentation in mainland Southeast Asia than those of the T. robustula complex. Accordingly, we propose several taxonomic changes within the genus Tylonycteris: the species T. fulvida and T. malayana are revalidated, and a new species, T. tonkinensis Tu, Csorba, Ruedi & Hassanin sp. nov., endemic to northern Indochina, is described.

Integrative taxonomy of theRhinolophus macrotiscomplex (Chiroptera, Rhinolophidae) in Vietnam and nearby regions

“…obs.). Thus, although the phylogenetic patterns we obtained among matrilines from distant geographic localities could be indicative of female philopatry (Hassanin et al., ; Kerth, Mayer, & König, ; Pereira, Salgueiro, Rodrigues, Coelho, & Palmeirim, ; Rivers, Butlin, & Altringham, ; Tu et al., ), further morphological, acoustic, and genetic studies are needed to test whether such genetic divergences represent cryptic diversity.…”

“…are recognized as forest‐interior specialists (Kingston, Francis, Akbar, & Kunz, ), contraction and expansion of forests during Plio‐Pleistocene have been regarded as major factors driving their biogeographical history (Flanders, Wei, Rossiter, & Zhang, ; Mao, He et al., ; Mao, Zhu, Zhang, & Rossiter, ; Rossiter, Benda, Dietz, Zhang, & Jones, ; Tu et al., ). For the R. macrotis group, we suggest that the vicariance of the most common ancestors of recent taxa might have taken place due to the persistence of different allopatric refugia across the region during Pleistocene glacial periods (Bird, Taylor, & Hunt, ; Gathorne‐Hardy, Syaukani Davies, Eggleton, & Jones, ; Lin et al., ; Morgan, Somboon, & Walto, ; Tu et al., , ). As a consequence, vicariant populations adaptively evolved under different ecological selections imposed by isolated refugia which may have led to shifts in their morphology (noseleaf structure and body, skull, glans penis, and baculum morphology) and echolocation systems, and subsequently their own SMRSs.…”

“…Depending on the status of SMRSs of each taxon, the restoration of connectivity between some of those during interglacial periods allowed ancient introgression events between some taxa that retained their relatedness (Mao, Zhang et al., ; Mao, He et al., ; Mao, Thong et al., ). However, to test this hypothesis, further investigations including genetic analyses of both mitochondrial and nuclear genomes are needed (Berthier et al., ; Hassanin et al., ; Mao, Zhang et al., ; Nesi et al., ; Tu et al., ).…”

Molecular systematics and biogeography of the Hemigalinae civets (Mammalia, Carnivora)

“…This might have resulted from either geographic barriers or Pleistocene climatic fluctuations (as suggested for bats, see Tu et al 2017) that shaped the population structure of this species. However, only one sequence was available for China (and it came from GenBank so we cannot confirm its validity), and thus, additional data would be needed to confirm this finding.…”

Research trends on bats in China: A twenty-first century review

“…As a result, a massive amount of novelties has been published in the past two decades, making China the current largest producer of scientific papers. Following this trend, post-millennium studies on bats in China have uncovered an overlooked diversity and unveiled several aspects of bats' evolutionary history and life-history features Peng et al, 2017;Tu et al, 2017). Recently, 135 bat species, of which 19% are endemic, were listed in the last national compilation (Jiang et al, 2017).…”