@ARTICLE{TreeBASE2Ref23052,
author = {Sébastien Wielgoss and Aude Gilabert and Axel Meyer and Thierry Wirth},
title = {Introgressive hybridization and latitudinal admixture clines in North Atlantic eels},
year = {2014},
keywords = {Anguilla anguilla, Anguilla rostrata, gene flow, isolation-by-distance, simulation, migration barriers},
doi = {10.1186/1471-2148-14-61},
url = {http://www.biomedcentral.com/1471-2148/14/61/abstract},
pmid = {},
journal = {BMC Evolutionary Biology},
volume = {14},
number = {},
pages = {61},
abstract = {Background
Hybridization, the interbreeding of diagnosably divergent species, is a major focus in evolutionary studies. Eels, both from North America and Europe migrate through the Atlantic to mate in a vast, overlapping area in the Sargasso Sea. Due to the lack of direct observation, it is unknown how these species remain reproductively isolated. The detection of inter-species hybrids in Iceland suggests on-going gene flow, but few studies to date have addressed the influence of introgression on genetic differentiation in North Atlantic eels.
Results
Here, we show that while mitochondrial lineages remain completely distinct on both sides of the Atlantic, limited hybridization is detectable with nuclear DNA markers. The nuclear hybridization signal peaks in the northern areas and decreases towards the southern range limits on both continents according to Bayesian assignment analyses. By simulating increasing proportions of both F1 hybrids and admixed individuals from the southern to the northern-most locations, we were able to generate highly significant isolation-by-distance patterns in both cases, reminiscent of previously published data for the European eel. Finally, fitting an isolation-with-migration model to our data supports the hypothesis of recent asymmetric introgression and refutes the alternative hypothesis of ancient polymorphism.
Conclusions
Fluctuating degrees of introgressive hybridization between Atlantic eel species are sufficient to explain temporally varying correlations of geographic and genetic distances reported for populations of the European eel.}
}
Citation for Study 15621
Citation title:
"Introgressive hybridization and latitudinal admixture clines in North Atlantic eels".
Study name:
"Introgressive hybridization and latitudinal admixture clines in North Atlantic eels".
This study is part of submission 15621
(Status: Published).
Citation
Wielgoss S., Gilabert A., Meyer A., & Wirth T. 2014. Introgressive hybridization and latitudinal admixture clines in North Atlantic eels. BMC Evolutionary Biology, 14: 61.
Authors
-
Wielgoss S.
(submitter)
+41446327623
-
Gilabert A.
-
Meyer A.
-
Wirth T.
Abstract
Background
Hybridization, the interbreeding of diagnosably divergent species, is a major focus in evolutionary studies. Eels, both from North America and Europe migrate through the Atlantic to mate in a vast, overlapping area in the Sargasso Sea. Due to the lack of direct observation, it is unknown how these species remain reproductively isolated. The detection of inter-species hybrids in Iceland suggests on-going gene flow, but few studies to date have addressed the influence of introgression on genetic differentiation in North Atlantic eels.
Results
Here, we show that while mitochondrial lineages remain completely distinct on both sides of the Atlantic, limited hybridization is detectable with nuclear DNA markers. The nuclear hybridization signal peaks in the northern areas and decreases towards the southern range limits on both continents according to Bayesian assignment analyses. By simulating increasing proportions of both F1 hybrids and admixed individuals from the southern to the northern-most locations, we were able to generate highly significant isolation-by-distance patterns in both cases, reminiscent of previously published data for the European eel. Finally, fitting an isolation-with-migration model to our data supports the hypothesis of recent asymmetric introgression and refutes the alternative hypothesis of ancient polymorphism.
Conclusions
Fluctuating degrees of introgressive hybridization between Atlantic eel species are sufficient to explain temporally varying correlations of geographic and genetic distances reported for populations of the European eel.
Keywords
Anguilla anguilla, Anguilla rostrata, gene flow, isolation-by-distance, simulation, migration barriers
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S15621
- Other versions:
Nexus
NeXML
- Show BibTeX reference
@ARTICLE{TreeBASE2Ref23052,
author = {Sébastien Wielgoss and Aude Gilabert and Axel Meyer and Thierry Wirth},
title = {Introgressive hybridization and latitudinal admixture clines in North Atlantic eels},
year = {2014},
keywords = {Anguilla anguilla, Anguilla rostrata, gene flow, isolation-by-distance, simulation, migration barriers},
doi = {10.1186/1471-2148-14-61},
url = {http://www.biomedcentral.com/1471-2148/14/61/abstract},
pmid = {},
journal = {BMC Evolutionary Biology},
volume = {14},
number = {},
pages = {61},
abstract = {Background
Hybridization, the interbreeding of diagnosably divergent species, is a major focus in evolutionary studies. Eels, both from North America and Europe migrate through the Atlantic to mate in a vast, overlapping area in the Sargasso Sea. Due to the lack of direct observation, it is unknown how these species remain reproductively isolated. The detection of inter-species hybrids in Iceland suggests on-going gene flow, but few studies to date have addressed the influence of introgression on genetic differentiation in North Atlantic eels.
Results
Here, we show that while mitochondrial lineages remain completely distinct on both sides of the Atlantic, limited hybridization is detectable with nuclear DNA markers. The nuclear hybridization signal peaks in the northern areas and decreases towards the southern range limits on both continents according to Bayesian assignment analyses. By simulating increasing proportions of both F1 hybrids and admixed individuals from the southern to the northern-most locations, we were able to generate highly significant isolation-by-distance patterns in both cases, reminiscent of previously published data for the European eel. Finally, fitting an isolation-with-migration model to our data supports the hypothesis of recent asymmetric introgression and refutes the alternative hypothesis of ancient polymorphism.
Conclusions
Fluctuating degrees of introgressive hybridization between Atlantic eel species are sufficient to explain temporally varying correlations of geographic and genetic distances reported for populations of the European eel.}
}
- Show RIS reference
TY - JOUR
ID - 23052
AU - Wielgoss,Sébastien
AU - Gilabert,Aude
AU - Meyer,Axel
AU - Wirth,Thierry
T1 - Introgressive hybridization and latitudinal admixture clines in North Atlantic eels
PY - 2014
KW - Anguilla anguilla
KW - Anguilla rostrata
KW - gene flow
KW - isolation-by-distance
KW - simulation
KW - migration barriers
UR - http://www.biomedcentral.com/1471-2148/14/61/abstract
N2 - Background
Hybridization, the interbreeding of diagnosably divergent species, is a major focus in evolutionary studies. Eels, both from North America and Europe migrate through the Atlantic to mate in a vast, overlapping area in the Sargasso Sea. Due to the lack of direct observation, it is unknown how these species remain reproductively isolated. The detection of inter-species hybrids in Iceland suggests on-going gene flow, but few studies to date have addressed the influence of introgression on genetic differentiation in North Atlantic eels.
Results
Here, we show that while mitochondrial lineages remain completely distinct on both sides of the Atlantic, limited hybridization is detectable with nuclear DNA markers. The nuclear hybridization signal peaks in the northern areas and decreases towards the southern range limits on both continents according to Bayesian assignment analyses. By simulating increasing proportions of both F1 hybrids and admixed individuals from the southern to the northern-most locations, we were able to generate highly significant isolation-by-distance patterns in both cases, reminiscent of previously published data for the European eel. Finally, fitting an isolation-with-migration model to our data supports the hypothesis of recent asymmetric introgression and refutes the alternative hypothesis of ancient polymorphism.
Conclusions
Fluctuating degrees of introgressive hybridization between Atlantic eel species are sufficient to explain temporally varying correlations of geographic and genetic distances reported for populations of the European eel.
L3 - 10.1186/1471-2148-14-61
JF - BMC Evolutionary Biology
VL - 14
IS -
ER -