FN Archimer Export Format
PT J
TI Widespread introgression in deep-sea hydrothermal vent mussels
BT 
AF BREUSING, Corinna
   VRIJENHOEK, Robert C.
   REUSCH, Thorsten B. H.
AS 1:1,2;2:2;3:1;
FF 1:;2:;3:;
C1 GEOMAR Helmholtz Ctr Ocean Res Kiel, Evolutionary Ecol Marine Fishes, Dusternbrooker Weg 20, D-24105 Kiel, Germany.
   Monterey Bay Aquarium Res Inst, 7700 Sandholdt Rd, Moss Landing, CA 95039 USA.
C2 GEOMAR, GERMANY
   MONTEREY BAY AQUARIUM RES INST, USA
IN DOAJ
IF 3.027
TC 8
UR https://archimer.ifremer.fr/doc/00382/49376/49796.pdf
LA English
DT Article
CR BIOBAZ 2013
BO Pourquoi pas ?
DE ;Bathymodiolus;Introgressive hybridization;Hybrid zone models;Single nucleotide polymorphisms
AB Background: The analysis of hybrid zones is crucial for gaining a mechanistic understanding of the process of speciation and the maintenance of species boundaries. Hybrid zones have been studied intensively in terrestrial and shallow-water ecosystems, but very little is known about their occurrence in deep-sea environments. Here we used diagnostic, single nucleotide polymorphisms in combination with one mitochondrial gene to re-examine prior hypotheses about a contact zone involving deep-sea hydrothermal vent mussels, Bathymodiolus azoricus and B. puteoserpentis, living along the Mid-Atlantic Ridge. Results: Admixture was found to be asymmetric with respect to the parental species, while introgression was more widespread geographically than previously recognized. Admixed individuals with a majority of alleles from one of the parental species were most frequent in habitats corresponding to that species. Mussels found at a geographically intermediate vent field constituted a genetically mixed population that showed no evidence for hybrid incompatibilities, a finding that does not support a previously inferred tension zone model. Conclusions: Our analyses indicate that B. azoricus and B. puteoserpentis hybridize introgressively across a large geographic area without evidence for general hybrid incompatibilities. While these findings shed new light onto the genetic structure of this hybrid zone, many aspects about its nature still remain obscure. Our study sets a baseline for further research that should primarily focus on the acquisition of additional mussel samples and environmental data, a detailed exploration of vent areas and hidden populations as well as genomic analyses in both mussel hosts and their bacterial symbionts. 
PY 2017
PD JAN
SO Bmc Evolutionary Biology
SN 1471-2148
PU Biomed Central Ltd
VL 17
UT 000392453300001
DI 10.1186/s12862-016-0862-2
ID 49376
ER

EF