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Rakotoarivelo AR, Goodman SM, Schoeman MC, Willows-Munro S.2018. Phylogeography and population genetics of Macronycteris commersonii s.s. (Chiroptera: Hipposideridae), an endemic Malagasy bat. PeerJ Preprints6:e27004v1https://doi.org/10.7287/peerj.preprints.27004v1
Macronycteris commersonii (Hipposideridae), a bat species endemic to Madagascar, is widespread across the island, utilising open woodland, degraded habitats, and forested areas from sea level to 1325 m. We investigated the fine-scale phylogeographic history and relationships of populations occurring in the western half of the island using sequence data from two mitochondrial DNA regions and extensive geographical sampling. Our results indicated a highly supported monophyletic group of M. commersonii, in which the Northern Madagascar Clade C formed a single monophyletic clade. The most recent common ancestor of M. commersonii was dated to 0.82 million years ago (mid-Pleistocene). Population expansion events were inferred for Clade B from approximately 130,000 to 70,000 years BP. Bayesian clustering and AMOVA analyses inferred week population genetic structure and sequence data indicated that genetic subdivisions do not support an isolation-by-distance model. Lineage dispersal, genetic divergence, and expansion events of M. commersonii were likely to be associated with Pleistocene climate fluctuations. Our data suggested that the northern and the central western regions of Madagascar may have acted as refugia for this species during periods of cooler and drier climate conditions associated with the Pleistocene.
This manuscript was reviewed by Molecular Phylogenetics and Evolution journal and rejected. This is a submission to PeerJ for review
Figure 1: Bayesian phylogram based on mtDNA control region (CR) and Cytochrome b (Cyt b) data drawn from 146 individual Macronycteris commersonii
Nodal support values are represented as Bayesian posterior probability/likelihood bootstrap percent (*=posterior probability values ≥ 0.50 and #= likelihood bootstrap percent ≥ 50) .
Table 1: List of specimens and associatedGenbank accession numbers for the mtDNA control region (CR) and cytochrome b (Cyt b) sequences used in the present study
PN = Parc National, RS = Réserve Spéciale, SF = Station Forestière. Collection numbers are the catalogue numbers of the respective museum: FMNH - Field Museum of Natural History, AMNH -American Museum of Natural History, and UADBA - Université d’Antananarivo, Département de Biologie Animale.