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How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica)

We studied an invasion of Poa annua on King George Island (Maritime Antarctic). The remoteness of this location, its geographic isolation, and its limited human traffic provided an opportunity to trace the history of an invasion of the species. Poa annua was recorded for the first time at H. Arctows...

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Autores principales: Wódkiewicz, Maciej, Chwedorzewska, Katarzyna J., Bednarek, Piotr T., Znój, Anna, Androsiuk, Piotr, Galera, Halina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5756844/
https://www.ncbi.nlm.nih.gov/pubmed/29321896
http://dx.doi.org/10.1002/ece3.3675
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author Wódkiewicz, Maciej
Chwedorzewska, Katarzyna J.
Bednarek, Piotr T.
Znój, Anna
Androsiuk, Piotr
Galera, Halina
author_facet Wódkiewicz, Maciej
Chwedorzewska, Katarzyna J.
Bednarek, Piotr T.
Znój, Anna
Androsiuk, Piotr
Galera, Halina
author_sort Wódkiewicz, Maciej
collection PubMed
description We studied an invasion of Poa annua on King George Island (Maritime Antarctic). The remoteness of this location, its geographic isolation, and its limited human traffic provided an opportunity to trace the history of an invasion of the species. Poa annua was recorded for the first time at H. Arctowski Polish Antarctic Station in the austral summer of 1985/6. In 2008/9, the species was observed in a new locality at the Ecology Glacier Forefield (1.5 km from “Arctowski”). We used AFLP to analyze the genetic differences among three populations of P. annua: the two mentioned above (Station and Forefield) and the putative origin of the introduction, Warsaw (Poland). There was 38% genetic variance among the populations. Pairwise Ф(PT) was 0.498 between the Forefield and Warsaw populations and 0.283 between Warsaw and Station. There were 15 unique bands in the Warsaw population (frequency from 6% to 100%) and one in the Station/Forefield populations (which appears in all analyzed individuals from both populations). The Δ(K) parameter indicated two groups of samples: Warsaw/Station and Forefield. As indicated by Fu's Fs statistics and an analysis of mismatch distribution, the Forefield population underwent a bottleneck and/or founder effect. The Forefield population was likely introduced by secondary dispersal from the Station population.
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spelling pubmed-57568442018-01-10 How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica) Wódkiewicz, Maciej Chwedorzewska, Katarzyna J. Bednarek, Piotr T. Znój, Anna Androsiuk, Piotr Galera, Halina Ecol Evol Original Research We studied an invasion of Poa annua on King George Island (Maritime Antarctic). The remoteness of this location, its geographic isolation, and its limited human traffic provided an opportunity to trace the history of an invasion of the species. Poa annua was recorded for the first time at H. Arctowski Polish Antarctic Station in the austral summer of 1985/6. In 2008/9, the species was observed in a new locality at the Ecology Glacier Forefield (1.5 km from “Arctowski”). We used AFLP to analyze the genetic differences among three populations of P. annua: the two mentioned above (Station and Forefield) and the putative origin of the introduction, Warsaw (Poland). There was 38% genetic variance among the populations. Pairwise Ф(PT) was 0.498 between the Forefield and Warsaw populations and 0.283 between Warsaw and Station. There were 15 unique bands in the Warsaw population (frequency from 6% to 100%) and one in the Station/Forefield populations (which appears in all analyzed individuals from both populations). The Δ(K) parameter indicated two groups of samples: Warsaw/Station and Forefield. As indicated by Fu's Fs statistics and an analysis of mismatch distribution, the Forefield population underwent a bottleneck and/or founder effect. The Forefield population was likely introduced by secondary dispersal from the Station population. John Wiley and Sons Inc. 2017-12-02 /pmc/articles/PMC5756844/ /pubmed/29321896 http://dx.doi.org/10.1002/ece3.3675 Text en © 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Wódkiewicz, Maciej
Chwedorzewska, Katarzyna J.
Bednarek, Piotr T.
Znój, Anna
Androsiuk, Piotr
Galera, Halina
How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica)
title How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica)
title_full How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica)
title_fullStr How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica)
title_full_unstemmed How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica)
title_short How much of the invader's genetic variability can slip between our fingers? A case study of secondary dispersal of Poa annua on King George Island (Antarctica)
title_sort how much of the invader's genetic variability can slip between our fingers? a case study of secondary dispersal of poa annua on king george island (antarctica)
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5756844/
https://www.ncbi.nlm.nih.gov/pubmed/29321896
http://dx.doi.org/10.1002/ece3.3675
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