Detailed genetic structure of an important rodent pest in Zambia - the interplay of geography, climate and human-mediated dispersal

0454485 - ÚBO 2016 CZ eng A - Abstrakt
Zima Jr., J. - Mazoch, V. - Šumbera, R. - Bryja, Josef … celkem 7 autorů
Detailed genetic structure of an important rodent pest in Zambia - the interplay of geography, climate and human-mediated dispersal.
Zoologické dny Brno 2015: sborník abstraktů z konference 12.-13. února 2015. Brno: Ústav biologie obratlovců AV ČR, 2015 - (Bryja, J.; Řehák, Z.; Zukal, J.). s. 269-270. ISBN 978-80-87189-18-4.
[Zoologické dny. 12.02.2015-13.02.2015, Brno]
Grant CEP: GA ČR GAP506/10/0983; GA ČR GA15-20229S
Institucionální podpora: RVO:68081766
Klíčová slova: Natal multimammate mouse * sub-Saharan Africa
Kód oboru RIV: EG - Zoologie

Natal multimammate mouse (Mastomys natalensis) is an important agricultural pest and reservoir of zoonoses, widespread across sub-Saharan Africa. Its whole-range historical demography inferred from mitochondrial DNA was described recently, revealing occurrence of six distinct phylogroups, with Pleistocene climate-driven processes identified as major cause of the differentiation. Here we present more detailed, smaller-scale study of population-genetic structure of this species, based on microsatellite analysis of 254 individuals within single phylogroup from 19 localities in Zambia with distances between localities ranging from 60 to 1200 kilometres. In contrast to the large-scale mtDNA study, we detected significant isolation
by distance. The Bayesian analysis of population structure suggests occurrence of three genetically differentiated clusters. Two of them encompass nine localities/populations and the third cluster is represented by a single population. Considering geographical positions of these clusters, we suggest that large rivers have played significant role in restricting gene flow in this species. We analysed mtDNA of part of the samples as well and the clustering pattern was congruent with the neutral nuclear markers with an important exception represented by two populations from large cities (Livingstone, Ndola) which were composed of mix of different haplotypes. This finding could be explained by human-mediated transport of individuals over large distances.
Trvalý link: http://hdl.handle.net/11104/0255176