PETRUŽELA, Jan, Radim ŠUMBERA, Tatiana AGHOVÁ, Anna BRYJOVA, A.S. KATAKWEBA, C.A. SABUNI, W.N. CHITAUKALI and Josef BRYJA. Spiny mice of the Zambezian bioregion - phylogeny, biogeography and ecological differentiation within the Acomys spinosissimus complex. Mammalian Biology. Německo: Urban & Fischer, 2018, vol. 91, December, p. 79-90. ISSN 1616-5047. Available from: https://dx.doi.org/10.1016/j.mambio.2018.03.012.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Spiny mice of the Zambezian bioregion - phylogeny, biogeography and ecological differentiation within the Acomys spinosissimus complex
Authors PETRUŽELA, Jan (203 Czech Republic, belonging to the institution), Radim ŠUMBERA (203 Czech Republic), Tatiana AGHOVÁ (703 Slovakia, belonging to the institution), Anna BRYJOVA (203 Czech Republic), A.S. KATAKWEBA (834 Tanzania, United Republic of), C.A. SABUNI (834 Tanzania, United Republic of), W.N. CHITAUKALI (454 Malawi) and Josef BRYJA (203 Czech Republic, guarantor, belonging to the institution).
Edition Mammalian Biology, Německo, Urban & Fischer, 2018, 1616-5047.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10613 Zoology
Country of publisher Germany
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 1.638
RIV identification code RIV/00216224:14310/18:00103699
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1016/j.mambio.2018.03.012
UT WoS 000432583400011
Keywords in English Phylogeography; savannah; Plio-Pleistocene climate change; Rodentia; tropical Africa
Tags International impact, Reviewed
Changed by Changed by: Mgr. Michal Petr, učo 65024. Changed: 23/4/2024 12:29.
Abstract
Despite the high degree of biological diversity in the Zambezian region, little information is available regarding the evolutionary history of its biota, and this is especially true for the fauna and flora of non-forested habitats. Here we use the most comprehensive multi-locus genetic dataset available to (1) reconstruct the phylogeny of spiny mice of the Acomys spinosissimus complex and to describe the spatial distribution of its genetic diversity; (2) to assess the level of reproductive isolation between genetic clades; (3) to analyse differences in climatic niche between potential species; and (4) to model their current and past distribution. The complex comprises four main genetic clades that correspond to four nominal species living in the east of the Zambezian region. Their distribution is delimited by important geographical divides including the Eastern Arc Mountains, Lake Malawi and the Zambezi River. Two species considered Tanzanian endemics, A. ngurui and A. muzei, are now known to be more widespread than previously thought and they have their centres of genetic diversity just north of the Zambezi. The first split between the extant members of the A. spinosissimus complex is estimated at 3 Mya. Most intraspecific diversification events are thought to have occurred in the Pleistocene, suggesting that climatic oscillations played an important role in their diversification. The climatic niches of parapatric taxa differ significantly; hence, local adaptations have likely played an important role in reproductive isolation. Species distribution modelling predicts a dramatic reduction of occurrence probability across the area during the last interglacial period, facilitating allopatric diversification of fragmented populations. Our results strongly suggest the combined role of Pleistocene climatic change, biogeographical barriers and local adaptation in forming current taxa diversity in east African savannah-like habitats. While such processes have frequently been observed in forest-living organisms (theory of allopatric diversification in forest refugia), similar mechanisms were likely also working in open ecosystems (savannah refugia). (C) 2018 Deutsche Gesellschaft fur Saugetierkunde. Published by Elsevier GmbH. All rights reserved.
PrintDisplayed: 18/10/2024 06:02