Journal
MOLECULAR PHYLOGENETICS AND EVOLUTION
Volume 139, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2019.106544
Keywords
Integrative species delimitation; Hybridization; Reticulate evolution; Genotyping-by-sequencing; Bat
Funding
- National Natural Science Foundation of China [31770403, 31370399, 31570390, 31670390]
- Jilin Provincial Natural Science Foundation [20180101272JC]
- Program for Introducing Talents to Universities [B16011]
- Northeast Normal University, Changchun
- Hungarian Scientific Research Fund (OTKA) [K112440]
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [106.05-2017.35]
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Species delimitation and evolutionary reconstruction remain challenging for non-model species that have experienced reticulate evolution and exhibit conflicting patterns of differentiation among multiple lines of evidence, such as mitochondrial and nuclear data and phenotypes. Here, we applied an integrative taxonomic approach to a case study of Rhinolophus macrotis complex, whose taxonomic status remains controversial, to provide insight into the systematics and evolutionary history of these species. By integrating traditional genetic markers with different modes of inheritance, genome-wide SNPs as well as phenotypic characteristics, we clarified the presence of three closely related species, R. episcopus, R. siamensis, and R. osgoodi, within this complex, and proposed a new taxonomic treatment for R. osgoodi. Our results suggested that hybridization and introgression are the main causes of low mtDNA divergence in these species. Combined with the demographic inference, we deduced that glacial-interglacial cycles drove geographic isolation and secondary contacts of these species, then promoted hybridization and lineage fusion among them, finally resulting in a reticulate evolutionary pattern. Overall, our study highlights the importance of combining multiple types of data to delimit species, especially those with conserved morphology, and to reveal the sophisticated processes of speciation.
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