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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F14%3A10290819%21RIV15-MSM-11310___
rdf:type
skos:Concept n20:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.1371/journal.pone.0080641
dcterms:description
Distinguishing between hybrid introgression and incomplete lineage sorting causing incongruence among gene trees in that they exhibit topological differences requires application of statistical approaches that are based on biologically relevant models. Such study is especially challenging in hybrid systems, where usual vectors mediating interspecific gene transfers hybrids with Mendelian heredity - are absent or unknown. Here we study a complex of hybridizing species, which are known to produce clonal hybrids, to discover how one of the species, Cobitis tanaitica, has achieved a pattern of mito-nuclear mosaic genome over the whole geographic range. We appplied three distinct methods, including the method using solely the information on gene tree topologies, and found that the contrasting mito-nuclear signal might not have resulted from the retention of ancestral polymorphism. Instead, we found two signs of hybridization events related to C. tanaitica; one concerning nuclear gene flow and the other suggested mitochondrial capture. Interestingly, clonal inheritance ( gynogenesis) of contemporary hybrids prevents genomic introgressions and non-clonal hybrids are either absent or too rare to be detected among European Cobitis. Our analyses therefore suggest that introgressive hybridizations are rather old episodes, mediated by previously existing hybrids whose inheritance was not entirely clonal. Cobitis complex thus supports the view that the type of resulting hybrids depends on a level of genomic divergence between sexual species. Distinguishing between hybrid introgression and incomplete lineage sorting causing incongruence among gene trees in that they exhibit topological differences requires application of statistical approaches that are based on biologically relevant models. Such study is especially challenging in hybrid systems, where usual vectors mediating interspecific gene transfers hybrids with Mendelian heredity - are absent or unknown. Here we study a complex of hybridizing species, which are known to produce clonal hybrids, to discover how one of the species, Cobitis tanaitica, has achieved a pattern of mito-nuclear mosaic genome over the whole geographic range. We appplied three distinct methods, including the method using solely the information on gene tree topologies, and found that the contrasting mito-nuclear signal might not have resulted from the retention of ancestral polymorphism. Instead, we found two signs of hybridization events related to C. tanaitica; one concerning nuclear gene flow and the other suggested mitochondrial capture. Interestingly, clonal inheritance ( gynogenesis) of contemporary hybrids prevents genomic introgressions and non-clonal hybrids are either absent or too rare to be detected among European Cobitis. Our analyses therefore suggest that introgressive hybridizations are rather old episodes, mediated by previously existing hybrids whose inheritance was not entirely clonal. Cobitis complex thus supports the view that the type of resulting hybrids depends on a level of genomic divergence between sexual species.
dcterms:title
Distinguishing between Incomplete Lineage Sorting and Genomic Introgressions: Complete Fixation of Allospecific Mitochondrial DNA in a Sexually Reproducing Fish (Cobitis; Teleostei), despite Clonal Reproduction of Hybrids Distinguishing between Incomplete Lineage Sorting and Genomic Introgressions: Complete Fixation of Allospecific Mitochondrial DNA in a Sexually Reproducing Fish (Cobitis; Teleostei), despite Clonal Reproduction of Hybrids
skos:prefLabel
Distinguishing between Incomplete Lineage Sorting and Genomic Introgressions: Complete Fixation of Allospecific Mitochondrial DNA in a Sexually Reproducing Fish (Cobitis; Teleostei), despite Clonal Reproduction of Hybrids Distinguishing between Incomplete Lineage Sorting and Genomic Introgressions: Complete Fixation of Allospecific Mitochondrial DNA in a Sexually Reproducing Fish (Cobitis; Teleostei), despite Clonal Reproduction of Hybrids
skos:notation
RIV/00216208:11310/14:10290819!RIV15-MSM-11310___
n3:aktivita
n14:S n14:P n14:I
n3:aktivity
I, P(GAP506/10/1155), P(GPP506/12/P857), S
n3:cisloPeriodika
6
n3:dodaniDat
n7:2015
n3:domaciTvurceVysledku
n4:4885783
n3:druhVysledku
n10:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
11809
n3:idVysledku
RIV/00216208:11310/14:10290819
n3:jazykVysledku
n6:eng
n3:klicovaSlova
water frogs; migration rates; population sizes; nuclear discordance; reticulate evolution; ancient hybridization; species trees; spined loaches; loaches genus cobitis; all-triploid vertebrate
n3:klicoveSlovo
n5:water%20frogs n5:reticulate%20evolution n5:species%20trees n5:population%20sizes n5:ancient%20hybridization n5:spined%20loaches n5:loaches%20genus%20cobitis n5:all-triploid%20vertebrate n5:migration%20rates n5:nuclear%20discordance
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[26F4655F32BE]
n3:nazevZdroje
PLoS ONE
n3:obor
n13:EG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
6
n3:projekt
n8:GPP506%2F12%2FP857 n8:GAP506%2F10%2F1155
n3:rokUplatneniVysledku
n7:2014
n3:svazekPeriodika
9
n3:tvurceVysledku
Ráb, Petr Paces, Jan Janko, Karel Choleva, Lukas Kohoutova-Sediva, Alena Musilová, Zuzana
n3:wos
000338512200001
s:issn
1932-6203
s:numberOfPages
16
n19:doi
10.1371/journal.pone.0080641
n12:organizacniJednotka
11310