Cytonuclear disequilibrium in a hybrid zone involving deep-sea hydrothermal vent mussels of the genus Bathymodiolus

Y. Won; S. J. Hallam; G. D. O'Mullan; R. C. Vrijenhoek

doi:10.1046/j.1365-294X.2003.01974.x

Cytonuclear disequilibrium in a hybrid zone involving deep-sea hydrothermal vent mussels of the genus Bathymodiolus

Y. Won, S. J. Hallam, G. D. O'Mullan, R. C. Vrijenhoek

Divison of EcoScience

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

A hybrid zone involving the deep-sea mussels, Bathymodiolus azoricus and B. puteoserpentis, was recently discovered at Broken Spur hydrothermal vent field (29°10′ N, 43°10′ W) along an intermediate segment of the Mid-Atlantic Ridge axis. Examination of nuclear (allozymes) and cytoplasmic (mitochondrial DNA) gene markers in a new sample from Broken Spur revealed significant cytonuclear disequilibrium caused by an excess of the parental types (coupling phase) and a deficiency of recombinants (repulsion phase). An assignment test of individual multilocus genotypes also revealed an excess of parental genotypes in the admixed population. These results support the hypothesis that the Broken Spur mussel population comprises a nonequilibrium mixture of parental immigrants and hybrid individuals.

Original language	English
Pages (from-to)	3185-3190
Number of pages	6
Journal	Molecular Ecology
Volume	12
Issue number	11
DOIs	https://doi.org/10.1046/j.1365-294X.2003.01974.x
State	Published - Nov 2003

Keywords

Allozymes
Assignment test
Bathymodiolus
Hybridization
Mid-Atlantic Ridge
mtDNA

Access to Document

10.1046/j.1365-294X.2003.01974.x

Cite this

@article{5687506805684483afa14553dbf44b02,

title = "Cytonuclear disequilibrium in a hybrid zone involving deep-sea hydrothermal vent mussels of the genus Bathymodiolus",

abstract = "A hybrid zone involving the deep-sea mussels, Bathymodiolus azoricus and B. puteoserpentis, was recently discovered at Broken Spur hydrothermal vent field (29°10′ N, 43°10′ W) along an intermediate segment of the Mid-Atlantic Ridge axis. Examination of nuclear (allozymes) and cytoplasmic (mitochondrial DNA) gene markers in a new sample from Broken Spur revealed significant cytonuclear disequilibrium caused by an excess of the parental types (coupling phase) and a deficiency of recombinants (repulsion phase). An assignment test of individual multilocus genotypes also revealed an excess of parental genotypes in the admixed population. These results support the hypothesis that the Broken Spur mussel population comprises a nonequilibrium mixture of parental immigrants and hybrid individuals.",

keywords = "Allozymes, Assignment test, Bathymodiolus, Hybridization, Mid-Atlantic Ridge, mtDNA",

author = "Y. Won and Hallam, {S. J.} and O'Mullan, {G. D.} and Vrijenhoek, {R. C.}",

year = "2003",

month = nov,

doi = "10.1046/j.1365-294X.2003.01974.x",

language = "English",

volume = "12",

pages = "3185--3190",

journal = "Molecular Ecology",

issn = "0962-1083",

publisher = "Wiley-Blackwell Publishing Ltd",

number = "11",

}

TY - JOUR

T1 - Cytonuclear disequilibrium in a hybrid zone involving deep-sea hydrothermal vent mussels of the genus Bathymodiolus

AU - Won, Y.

AU - Hallam, S. J.

AU - O'Mullan, G. D.

AU - Vrijenhoek, R. C.

PY - 2003/11

Y1 - 2003/11

N2 - A hybrid zone involving the deep-sea mussels, Bathymodiolus azoricus and B. puteoserpentis, was recently discovered at Broken Spur hydrothermal vent field (29°10′ N, 43°10′ W) along an intermediate segment of the Mid-Atlantic Ridge axis. Examination of nuclear (allozymes) and cytoplasmic (mitochondrial DNA) gene markers in a new sample from Broken Spur revealed significant cytonuclear disequilibrium caused by an excess of the parental types (coupling phase) and a deficiency of recombinants (repulsion phase). An assignment test of individual multilocus genotypes also revealed an excess of parental genotypes in the admixed population. These results support the hypothesis that the Broken Spur mussel population comprises a nonequilibrium mixture of parental immigrants and hybrid individuals.

AB - A hybrid zone involving the deep-sea mussels, Bathymodiolus azoricus and B. puteoserpentis, was recently discovered at Broken Spur hydrothermal vent field (29°10′ N, 43°10′ W) along an intermediate segment of the Mid-Atlantic Ridge axis. Examination of nuclear (allozymes) and cytoplasmic (mitochondrial DNA) gene markers in a new sample from Broken Spur revealed significant cytonuclear disequilibrium caused by an excess of the parental types (coupling phase) and a deficiency of recombinants (repulsion phase). An assignment test of individual multilocus genotypes also revealed an excess of parental genotypes in the admixed population. These results support the hypothesis that the Broken Spur mussel population comprises a nonequilibrium mixture of parental immigrants and hybrid individuals.

KW - Allozymes

KW - Assignment test

KW - Bathymodiolus

KW - Hybridization

KW - Mid-Atlantic Ridge

KW - mtDNA

UR - http://www.scopus.com/inward/record.url?scp=0242540530&partnerID=8YFLogxK

U2 - 10.1046/j.1365-294X.2003.01974.x

DO - 10.1046/j.1365-294X.2003.01974.x

M3 - Article

C2 - 14629398

AN - SCOPUS:0242540530

SN - 0962-1083

VL - 12

SP - 3185

EP - 3190

JO - Molecular Ecology

JF - Molecular Ecology

IS - 11

ER -

Cytonuclear disequilibrium in a hybrid zone involving deep-sea hydrothermal vent mussels of the genus Bathymodiolus

Abstract

Keywords

Access to Document

Fingerprint

Cite this