Skip to Main content Skip to Navigation
Journal articles

Reconstructing the demographic history of divergence between European river and brook lampreys using approximate Bayesian computations: Reconstructing the demographic history of divergence between European river and brook lampreys using approximate Bayesian computations

Abstract : Inferring the history of isolation and gene flow during species divergence is a central question in evolutionary biology. The European river lamprey (Lampetra fluviatilis) and brook lamprey (L. planeri) show a low reproductive isolation but have highly distinct life histories, the former being parasitic-anadromous and the latter non-parasitic and freshwater resident. Here we used microsatellite data from six replicated population pairs to reconstruct their history of divergence using an approximate Bayesian computation framework combined with a random forest model. In most population pairs, scenarios of divergence with recent isolation were outcompeted by scenarios proposing ongoing gene flow, namely the Secondary Contact (SC) and Isolation with Migration (IM) models. The estimation of demographic parameters under the SC model indicated a time of secondary contact close to the time of speciation, explaining why SC and IM models could not be discriminated. In case of an ancient secondary contact, the historical signal of divergence is lost and neutral markers converge to the same equilibrium as under the less parameterized model allowing ongoing gene flow. Our results imply that models of secondary contacts should be systematically compared to models of divergence with gene flow; given the difficulty to discriminate among these models, we suggest that genome-wide data are needed to adequately reconstruct divergence history.
Document type :
Journal articles
Complete list of metadata

Cited literature [27 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01453893
Contributor : Archive Ouverte Prodinra <>
Submitted on : Wednesday, May 27, 2020 - 6:31:12 PM
Last modification on : Monday, June 7, 2021 - 9:06:04 AM

File

2016_Rougemont_Peerj_1.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

INRAE | INRA | UNAM | U3E

Citation

Quentin Rougemont, Clément Roux, S. Neuenschwander, J. Goudet, Sophie Launey, et al.. Reconstructing the demographic history of divergence between European river and brook lampreys using approximate Bayesian computations: Reconstructing the demographic history of divergence between European river and brook lampreys using approximate Bayesian computations. PeerJ, PeerJ, 2016, 4, ⟨10.7717/peerj.1910⟩. ⟨hal-01453893⟩

Share

Metrics

Record views

148

Files downloads

66