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Statements

Subject Item
n2:RIV%2F68081766%3A_____%2F08%3A00315014%21RIV09-AV0-68081766
rdf:type
skos:Concept n18:Vysledek
dcterms:description
Two sibling species of the rodent genus Praomys occur in West African forests. By sampling across their geographical ranges, we test the hypothesis that climatic oscillations during the Quaternary made an impact on the observed pattern of cytochrome b sequence variation. We show that their phylogeographic histories are dissimilar, which could be related to their distinct ecological requirements. The genetic pattern of P. tullbergi fits the refuge hypothesis, indicating that a very small number of populations survived in distinct forest blocks during the arid phases, then expanded again with forest recovery. In contrast, a number of populations of P. rostratus appear to have survived the dry periods in more fragmented forest habitats, with varying levels of gene flow between them. In addition, historical variations of the West African hydrographic network could also have contributed to the pattern of genetic differentiation observed in both species. Two sibling species of the rodent genus Praomys occur in West African forests. By sampling across their geographical ranges, we test the hypothesis that climatic oscillations during the Quaternary made an impact on the observed pattern of cytochrome b sequence variation. We show that their phylogeographic histories are dissimilar, which could be related to their distinct ecological requirements. The genetic pattern of P. tullbergi fits the refuge hypothesis, indicating that a very small number of populations survived in distinct forest blocks during the arid phases, then expanded again with forest recovery. In contrast, a number of populations of P. rostratus appear to have survived the dry periods in more fragmented forest habitats, with varying levels of gene flow between them. In addition, historical variations of the West African hydrographic network could also have contributed to the pattern of genetic differentiation observed in both species. V lesích západní Afriky se vyskytují dva druhy hlodavců rodu Praomys. Analýzou mtDNA jsme testovali, jakým způsobem se klimatické oscilace v minulosti projevily na genetické struktuře jejich populací. Prokázali jsme, že oscilace v rozsahu lesa v průběhu Pleistocénu měly výrazný vliv na současnou genetickou strukturu obou druhů, i když u každého z nich zřetelně odlišný. Genetická struktura P. tullbergi podporuje tzv. %22refugium%22 hypotézu, kdy v období sucha přežil pouze malý podíl všech populací a tyto populace posléze expandovaly. Populace P. rostratus přežily ve větších počtech i v aridnějších oblastech a genetická struktura tohoto druhu je mnohem více komplikovaná. Navíc se zdá, že změny hydrografické sítě měly rovněž výrazný vliv na genetickou diferenciaci obou druhů.
dcterms:title
Comparative phylogeography of two sibling species of forest-dwelling rodent (Praomys rostratus and P. tullbergi) in West Africa: different reactions to past forest fragmentation Srovnávací fylogeografie dvou sesterských druhů lesních hlodavců (Praomys rostratus a P. tullbergi) v západní Africe: rozdílné reakce na historickou fragmentaci lesa Comparative phylogeography of two sibling species of forest-dwelling rodent (Praomys rostratus and P. tullbergi) in West Africa: different reactions to past forest fragmentation
skos:prefLabel
Srovnávací fylogeografie dvou sesterských druhů lesních hlodavců (Praomys rostratus a P. tullbergi) v západní Africe: rozdílné reakce na historickou fragmentaci lesa Comparative phylogeography of two sibling species of forest-dwelling rodent (Praomys rostratus and P. tullbergi) in West Africa: different reactions to past forest fragmentation Comparative phylogeography of two sibling species of forest-dwelling rodent (Praomys rostratus and P. tullbergi) in West Africa: different reactions to past forest fragmentation
skos:notation
RIV/68081766:_____/08:00315014!RIV09-AV0-68081766
n3:aktivita
n15:P n15:Z
n3:aktivity
P(IAA6093404), Z(AV0Z60930519)
n3:cisloPeriodika
23
n3:dodaniDat
n16:2009
n3:domaciTvurceVysledku
n10:1659758 n10:7992726
n3:druhVysledku
n12:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
360506
n3:idVysledku
RIV/68081766:_____/08:00315014
n3:jazykVysledku
n11:eng
n3:klicovaSlova
Africa; cytochrome b; phylogeography
n3:klicoveSlovo
n13:Africa n13:cytochrome%20b n13:phylogeography
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[188B2B76F4E2]
n3:nazevZdroje
Molecular Ecology
n3:obor
n8:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
10
n3:projekt
n5:IAA6093404
n3:rokUplatneniVysledku
n16:2008
n3:svazekPeriodika
17
n3:tvurceVysledku
Akpatou, B. Granjon, L. Denys, C. Bryja, Josef Lalis, A. Lecompte, E. Couloux, A. Konečný, Adam Colyn, M. Nicolas, V.
n3:wos
000261104000015
n3:zamer
n7:AV0Z60930519
s:issn
0962-1083
s:numberOfPages
17