PMID- 24220087
OWN - NLM
STAT- MEDLINE
DCOM- 20140929
LR  - 20220321
IS  - 1365-2540 (Electronic)
IS  - 0018-067X (Print)
IS  - 0018-067X (Linking)
VI  - 112
IP  - 3
DP  - 2014 Mar
TI  - Introgressive hybridization as a promoter of genome reshuffling in natural 
      homoploid fish hybrids (Cyprinidae, Leuciscinae).
PG  - 343-50
LID - 10.1038/hdy.2013.110 [doi]
AB  - Understanding the mechanisms underlying diversification and speciation by 
      introgressive hybridization is currently one of the major challenges in 
      evolutionary biology. Here, the analysis of hybridization between two pairs of 
      Iberian Leuciscinae provided new data on independent hybrid zones involving 
      Achondrostoma oligolepis (AOL) and Pseudochondrostoma duriense (PDU), and 
      confirmed the occurrence of hybrids between AOL and Pseudochondrostoma polylepis 
      (PPO). A multilevel survey combining morphological, genetic and cytogenomic 
      markers on a vast population screening successfully sorted the selected fishes as 
      admixed. Results were similar in both AOL x PDU and AOL x PPO systems. Overall, 
      hybrid morphotypes, cytogenomic data and genetic profiling indicated preferential 
      backcrossing and suggested AOL as a major genomic contributor. Moreover, results 
      implied AOL as more permissive to introgression than PDU or PPO. Although PDU- 
      and PPO-like individuals appeared more resilient to genome modifications, AOL 
      appeared to be more involved and affected by the ongoing hybridization events, as 
      chromosomal translocations were only found in AOL-like individuals. All hybrids 
      analysed evidenced extensive ribosomal DNA (rDNA) polymorphism that was not found 
      in parental species, but usually seen falling within the range of possible 
      parental combinations. Yet, transgressive phenotypes that cannot be explained by 
      normal recombination, including more rDNA clusters than expected or the 
      occurrence of syntenic rDNAs, were also detected. Present results proved rapid 
      genomic evolution providing the genetic novelty for species to persist. In 
      addition, although the ultimate consequences of such apparently extensive and 
      recurrent events remain unknown, modern genome-wide methodologies are of great 
      promise towards answering questions concerning the causes, dynamics and impacts 
      of hybridization.
FAU - Pereira, C S A
AU  - Pereira CS
AD  - Faculty of Sciences of the University of Lisbon, Centre for Environmental 
      Biology, Lisbon, Portugal.
FAU - Aboim, M A
AU  - Aboim MA
AD  - Faculty of Sciences of the University of Lisbon, Centre for Environmental 
      Biology, Lisbon, Portugal.
FAU - Rab, P
AU  - Rab P
AD  - Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics, Czech 
      Academy of Sciences, Libechov, Czech Republic.
FAU - Collares-Pereira, M J
AU  - Collares-Pereira MJ
AD  - Faculty of Sciences of the University of Lisbon, Centre for Environmental 
      Biology, Lisbon, Portugal.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20131113
PL  - England
TA  - Heredity (Edinb)
JT  - Heredity
JID - 0373007
RN  - 0 (DNA, Ribosomal)
SB  - IM
MH  - Animals
MH  - *Chimera
MH  - Cyprinidae/*genetics
MH  - DNA, Ribosomal
MH  - Female
MH  - Genetics, Population
MH  - Genome
MH  - Hybridization, Genetic
MH  - Karyotype
MH  - Male
MH  - Portugal
MH  - Synteny
MH  - Telomere
PMC - PMC3931169
EDAT- 2013/11/14 06:00
MHDA- 2014/09/30 06:00
PMCR- 2015/03/01
CRDT- 2013/11/14 06:00
PHST- 2013/04/12 00:00 [received]
PHST- 2013/07/18 00:00 [revised]
PHST- 2013/08/29 00:00 [accepted]
PHST- 2013/11/14 06:00 [entrez]
PHST- 2013/11/14 06:00 [pubmed]
PHST- 2014/09/30 06:00 [medline]
PHST- 2015/03/01 00:00 [pmc-release]
AID - hdy2013110 [pii]
AID - 10.1038/hdy.2013.110 [doi]
PST - ppublish
SO  - Heredity (Edinb). 2014 Mar;112(3):343-50. doi: 10.1038/hdy.2013.110. Epub 2013 
      Nov 13.