Diversity, distribution, and evolutionary history of the most studied African rodents, multimammate mice of the genus Mastomys: An overview after a quarter of century of using DNA sequencing
Alexandra Hánová, Adam Konečný, Ondřej Mikula, Anna Bryjová, Radim Šumbera, Josef Bryja
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引用次数: 5
Abstract
Despite the importance of rodents as agricultural pests and reservoirs of zoonoses, the taxonomy and evolutionary history of many groups is still not sufficiently understood. The genus Mastomys (multimammate mice or rats) comprises abundant and intensively studied rodents, widespread across sub-Saharan Africa. Here, we used an extensive dataset of mitochondrial DNA markers comprising of nearly 2700 individual sequences from 30 African countries to update the information about the geographical distribution of their genetic diversity. In the next step, we sequenced complete mitogenomes, six nuclear markers, and produced anchored phylogenomic data (355 loci) and, for the first time, sufficiently resolved phylogenetic relationships among all extant Mastomys species and reconstructed their evolutionary history. The results suggest eight species of Mastomys occupying various non-forested environments. Some species are very widespread (Mastomys natalensis, Mastomys kollmannspergeri, and Mastomys erythroleucus; for the latter we provide first records from Tanzania, thus significantly extending its distribution), while others have their distribution restricted to particular geographical areas (Mastomys coucha in South African region, Mastomys awashensis in Ethiopia, and Mastomys angolensis in Angola and southern DRC) or to particular habitat, that is, wetlands in western (Mastomys huberti) or southwestern (Mastomys shortridgei) Africa. The first split separating M. angolensis (with five pairs of mammae only) from remaining multimammate taxa occurred in mid-Pliocene, but the most intensive radiation occurred in mid-Pleistocene and was likely driven by the intensification of climate oscillations. The resolved phylogeny of Mastomys will facilitate their further use as model taxa, for example, in understanding proximate mechanisms of evolution of the multimammate phenotype.
期刊介绍:
The Journal of Zoological Systematics and Evolutionary Research (JZSER)is a peer-reviewed, international forum for publication of high-quality research on systematic zoology and evolutionary biology. The aim of the journal is to provoke a synthesis of results from morphology, physiology, animal geography, ecology, ethology, evolutionary genetics, population genetics, developmental biology and molecular biology. Besides empirical papers, theoretical contributions and review articles are welcome. Integrative and interdisciplinary contributions are particularly preferred. Purely taxonomic and predominantly cytogenetic manuscripts will not be accepted except in rare cases, and then only at the Editor-in-Chief''s discretion. The same is true for phylogenetic studies based solely on mitochondrial marker sequences without any additional methodological approach. To encourage scientific exchange and discussions, authors are invited to send critical comments on previously published articles. Only papers in English language are accepted.