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Complete lack of mitochondrial divergence between two species of NE Atlantic marine intertidal gastropods

Kemppainen, Petri; Panova, Marina and Hollander, Johan LU (2009) In Journal of Evolutionary Biology 22(10). p.2000-2011
Abstract
Some mitochondrial introgression is common between closely related species, but distinct species rarely show substantial introgression in their entire distribution range. In this study, however, we report a complete lack of mitochondrial divergence between two sympatric species of flat periwinkles (Littorina fabalis and Littorina obtusata) which, based on previous allozyme studies, diverged approximately 1 Ma. We re-examined their species status using both morphology (morphometric analysis) and neutral genetic markers (microsatellites) and our results confirmed that these species are well separated. Despite this, the two species shared all common cytochrome-b haplotypes throughout their NE Atlantic distribution and no deep split between... (More)
Some mitochondrial introgression is common between closely related species, but distinct species rarely show substantial introgression in their entire distribution range. In this study, however, we report a complete lack of mitochondrial divergence between two sympatric species of flat periwinkles (Littorina fabalis and Littorina obtusata) which, based on previous allozyme studies, diverged approximately 1 Ma. We re-examined their species status using both morphology (morphometric analysis) and neutral genetic markers (microsatellites) and our results confirmed that these species are well separated. Despite this, the two species shared all common cytochrome-b haplotypes throughout their NE Atlantic distribution and no deep split between typical L. fabalis and L. obtusata haplotypes could be found. We suggest that incomplete lineage sorting explains most of the lack of mitochondrial divergence between these species. However, coalescent-based analyses and the sympatric sharing of unique haplotypes suggest that introgressive hybridization also has occurred. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
barcoding, hybridization, introgression, mitochondrial DNA: microsatellites, morphometrics, mtDNA phylogeny, sister species, Littorina
in
Journal of Evolutionary Biology
volume
22
issue
10
pages
2000 - 2011
publisher
John Wiley & Sons
external identifiers
  • scopus:70349217240
ISSN
1420-9101
DOI
10.1111/j.1420-9101.2009.01810.x
language
English
LU publication?
no
id
4c495d7c-70ba-46db-99a4-fe2d16faac4f (old id 1982119)
date added to LUP
2011-08-22 12:44:16
date last changed
2017-06-11 03:26:16
@article{4c495d7c-70ba-46db-99a4-fe2d16faac4f,
  abstract     = {Some mitochondrial introgression is common between closely related species, but distinct species rarely show substantial introgression in their entire distribution range. In this study, however, we report a complete lack of mitochondrial divergence between two sympatric species of flat periwinkles (Littorina fabalis and Littorina obtusata) which, based on previous allozyme studies, diverged approximately 1 Ma. We re-examined their species status using both morphology (morphometric analysis) and neutral genetic markers (microsatellites) and our results confirmed that these species are well separated. Despite this, the two species shared all common cytochrome-b haplotypes throughout their NE Atlantic distribution and no deep split between typical L. fabalis and L. obtusata haplotypes could be found. We suggest that incomplete lineage sorting explains most of the lack of mitochondrial divergence between these species. However, coalescent-based analyses and the sympatric sharing of unique haplotypes suggest that introgressive hybridization also has occurred.},
  author       = {Kemppainen, Petri and Panova, Marina and Hollander, Johan},
  issn         = {1420-9101},
  keyword      = {barcoding,hybridization,introgression,mitochondrial DNA: microsatellites,morphometrics,mtDNA phylogeny,sister species,Littorina},
  language     = {eng},
  number       = {10},
  pages        = {2000--2011},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Evolutionary Biology},
  title        = {Complete lack of mitochondrial divergence between two species of NE Atlantic marine intertidal gastropods},
  url          = {http://dx.doi.org/10.1111/j.1420-9101.2009.01810.x},
  volume       = {22},
  year         = {2009},
}