TY - JOUR

T1 - Homoploid hybrid speciation and genome evolution via chromosome sorting

AU - Lukhtanov, V.A.

AU - Shapoval, N.A.

AU - Anokhin, B.A.

AU - Saifitdinova, A.F.

AU - Kuznetsova, V.G.

PY - 2015

Y1 - 2015

N2 - Genomes of numerous diploid plant and animal species possess traces of interspecific crosses, and many researches consider them as a support for homoploid hybrid speciation (HHS), a process by which a new reproductively-isolated species arises through hybridization and combination of parts of the parental genomes, but without an increase in ploidy. However convincing evidence for a creative role of hybridization in the origin of reproductive isolation between hybrid and parental forms is extremely limited. Here, through studying Agrodiaetus butterflies, we provide proof of a previously unknown mode of HHS based on the formation of post-zygotic reproductive isolation via hybridization of chromosomally divergent parental species and subsequent fixation of a novel combination of chromosome fusions/fissions in hybrid descendents. We show that meiotic segregation, operating in the hybrid lineage, resulted in formation of a new diploid genome, drastically rearranged in terms of chromosome number. We also demonstrat

AB - Genomes of numerous diploid plant and animal species possess traces of interspecific crosses, and many researches consider them as a support for homoploid hybrid speciation (HHS), a process by which a new reproductively-isolated species arises through hybridization and combination of parts of the parental genomes, but without an increase in ploidy. However convincing evidence for a creative role of hybridization in the origin of reproductive isolation between hybrid and parental forms is extremely limited. Here, through studying Agrodiaetus butterflies, we provide proof of a previously unknown mode of HHS based on the formation of post-zygotic reproductive isolation via hybridization of chromosomally divergent parental species and subsequent fixation of a novel combination of chromosome fusions/fissions in hybrid descendents. We show that meiotic segregation, operating in the hybrid lineage, resulted in formation of a new diploid genome, drastically rearranged in terms of chromosome number. We also demonstrat

KW - hybrid speciation

KW - reproductive isolation

KW - chromosome

KW - meiosis

KW - genomic in situ hybridization

KW - AFLP

U2 - 10.1098/rspb.2015.0157

DO - 10.1098/rspb.2015.0157

M3 - Article

VL - 282

JO - Proceedings of the Royal Society B: Biological Sciences

JF - Proceedings of the Royal Society B: Biological Sciences

SN - 0962-8452

IS - 1807

ER -