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Population Genetic Structure of a Microalgal Species under Expansion.

Lebret, Karen LU ; Kritzberg, Emma LU and Rengefors, Karin LU (2013) In PLoS ONE 8(12).
Abstract
Biological invasions often cause major perturbations in the environment and are well studied among macroorganisms. Less is known about invasion by free-living microbes. Gonyostomum semen (Raphidophyceae) is a freshwater phytoplankton species that has increased in abundance in Northern Europe since the 1980's and has expanded its habitat range. In this study, we aimed to determine the genetic population structure of G. semen in Northern Europe and to what extent it reflects the species' recent expansion. We sampled lakes from 12 locations (11 lakes) in Norway, Sweden and Finland. Multiple strains from each location were genotyped using Amplified Fragment Length Polymorphism (AFLP). We found low differentiation between locations, and low... (More)
Biological invasions often cause major perturbations in the environment and are well studied among macroorganisms. Less is known about invasion by free-living microbes. Gonyostomum semen (Raphidophyceae) is a freshwater phytoplankton species that has increased in abundance in Northern Europe since the 1980's and has expanded its habitat range. In this study, we aimed to determine the genetic population structure of G. semen in Northern Europe and to what extent it reflects the species' recent expansion. We sampled lakes from 12 locations (11 lakes) in Norway, Sweden and Finland. Multiple strains from each location were genotyped using Amplified Fragment Length Polymorphism (AFLP). We found low differentiation between locations, and low gene diversity within each location. Moreover, there was an absence of genetic isolation with distance (Mantel test, p = 0.50). According to a Bayesian clustering method all the isolates belonged to the same genetic population. Together our data suggest the presence of one metapopulation and an overall low diversity, which is coherent with a recent expansion of G. semen. (Less)
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organization
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Contribution to journal
publication status
published
subject
in
PLoS ONE
volume
8
issue
12
publisher
Public Library of Science
external identifiers
  • wos:000328731800066
  • pmid:24349300
  • scopus:84892608384
ISSN
1932-6203
DOI
10.1371/journal.pone.0082510
project
BECC
language
English
LU publication?
yes
id
3170f3dd-0c62-4d81-9cfb-a61685a7c174 (old id 4223542)
date added to LUP
2014-01-08 15:54:31
date last changed
2019-08-07 02:41:26
@article{3170f3dd-0c62-4d81-9cfb-a61685a7c174,
  abstract     = {Biological invasions often cause major perturbations in the environment and are well studied among macroorganisms. Less is known about invasion by free-living microbes. Gonyostomum semen (Raphidophyceae) is a freshwater phytoplankton species that has increased in abundance in Northern Europe since the 1980's and has expanded its habitat range. In this study, we aimed to determine the genetic population structure of G. semen in Northern Europe and to what extent it reflects the species' recent expansion. We sampled lakes from 12 locations (11 lakes) in Norway, Sweden and Finland. Multiple strains from each location were genotyped using Amplified Fragment Length Polymorphism (AFLP). We found low differentiation between locations, and low gene diversity within each location. Moreover, there was an absence of genetic isolation with distance (Mantel test, p = 0.50). According to a Bayesian clustering method all the isolates belonged to the same genetic population. Together our data suggest the presence of one metapopulation and an overall low diversity, which is coherent with a recent expansion of G. semen.},
  articleno    = {e82510},
  author       = {Lebret, Karen and Kritzberg, Emma and Rengefors, Karin},
  issn         = {1932-6203},
  language     = {eng},
  number       = {12},
  publisher    = {Public Library of Science},
  series       = {PLoS ONE},
  title        = {Population Genetic Structure of a Microalgal Species under Expansion.},
  url          = {http://dx.doi.org/10.1371/journal.pone.0082510},
  volume       = {8},
  year         = {2013},
}