Speciation with gene flow in marine systems

Over the last century, a large body of literature emerged on mechanisms driving speciation. Most of the research into these questions focussed on terrestrial systems, while research in marine systems lagged behind. Here, we review the population genetic mechanisms and geographic context of 33 potent...

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Bibliographic Details
Published in:Contributions to Zoology
Main Authors: Potkamp, Gerrit, Fransen, Charles H. J. M.
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
assortative mating
disruptive selection
ecological speciation
magic trait
marine speciation
speciation with gene flow
APPROXIMATE BAYESIAN COMPUTATION
EUCYCLOGOBIUS-NEWBERRYI TELEOSTEI
CORAL MONTASTRAEA-CAVERNOSA
HOST-ASSOCIATED SPECIATION
LITTORINA-SAXATILIS OLIVI
COD GADUS-MORHUA
SYMPATRIC SPECIATION
REPRODUCTIVE ISOLATION
ATLANTIC COD
atlantic cod
Gadus morhua
Online Access:https://hdl.handle.net/11370/7c8170da-5e73-47ba-b979-b6a4539c827f
https://research.rug.nl/en/publications/7c8170da-5e73-47ba-b979-b6a4539c827f
https://doi.org/10.1163/18759866-20191344
https://pure.rug.nl/ws/files/118510664/_18759866_Contributions_to_Zoology_Speciation_with_gene_flow_in_marine_systems.pdf
https://brill.com/view/journals/ctoz/88/2/article-p133_133.xml?language=en
Description
Summary:Over the last century, a large body of literature emerged on mechanisms driving speciation. Most of the research into these questions focussed on terrestrial systems, while research in marine systems lagged behind. Here, we review the population genetic mechanisms and geographic context of 33 potential cases of speciation with gene flow in the marine realm, using six criteria inferred from theoretical models of speciation. Speciation with gene flow occurs in a wide range of marine taxa. Single traits, which induce assortative mating and are subjected to disruptive selection, such as differences in host-associations in invertebrates or colour pattern in tropical fish, are potentially responsible for a decrease in gene flow and may be driving divergence in the majority of cases. However, much remains unknown, and with the current knowledge, the frequency of ecological speciation with gene flow in marine systems remains difficult to estimate. Standardized, generally applicable statistical methods, explicitly testing different hypotheses of speciation, are, going forward, required to confidently infer speciation with gene flow.

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