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Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced?

The Pacific oyster, Crassostrea gigas, was introduced to Europe for aquaculture purposes, and has had a rapid and unforeseen northward expansion in northern Europe. The recent dramatic increase in number of C. gigas populations along the species’ northern distribution limit has questioned the effici...

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Autores principales: Anglès d’Auriac, Marc B., Rinde, Eli, Norling, Pia, Lapègue, Sylvie, Staalstrøm, André, Hjermann, Dag Ø., Thaulow, Jens
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5423667/
https://www.ncbi.nlm.nih.gov/pubmed/28486520
http://dx.doi.org/10.1371/journal.pone.0177481
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author Anglès d’Auriac, Marc B.
Rinde, Eli
Norling, Pia
Lapègue, Sylvie
Staalstrøm, André
Hjermann, Dag Ø.
Thaulow, Jens
author_facet Anglès d’Auriac, Marc B.
Rinde, Eli
Norling, Pia
Lapègue, Sylvie
Staalstrøm, André
Hjermann, Dag Ø.
Thaulow, Jens
author_sort Anglès d’Auriac, Marc B.
collection PubMed
description The Pacific oyster, Crassostrea gigas, was introduced to Europe for aquaculture purposes, and has had a rapid and unforeseen northward expansion in northern Europe. The recent dramatic increase in number of C. gigas populations along the species’ northern distribution limit has questioned the efficiency of Skagerrak as a dispersal barrier for transport and survival of larvae. We investigated the genetic connectivity and possible spreading patterns between Pacific oyster populations on the southern Norwegian coast (4 localities) and Swedish and Danish populations by means of DNA microsatellite analysis of adult oysters, and by simulating larvae drift. In the simulations we used a 3D oceanographic model to explore the influence of recent climate change (1990–2010) on development, survival, and successful spreading of Danish and Swedish Pacific oyster larvae to Norwegian coastal waters. The simulations indicated adequate temperature conditions for development, survival, and settlement of larvae across the Skagerrak in warm years since 2000. However, microsatellite genotyping revealed genetic differences between the Norwegian populations, and between the Norwegian populations and the Swedish and Danish populations, the latter two populations being more similar. This patchwork pattern of genetic dissimilarity among the Norwegian populations points towards multiple local introduction routes rather than the commonly assumed unidirectional entry of larvae drifted from Denmark and Sweden. Alternative origins of introduction and implications for management, such as forecasting and possible mitigation actions, are discussed.
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spelling pubmed-54236672017-05-15 Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced? Anglès d’Auriac, Marc B. Rinde, Eli Norling, Pia Lapègue, Sylvie Staalstrøm, André Hjermann, Dag Ø. Thaulow, Jens PLoS One Research Article The Pacific oyster, Crassostrea gigas, was introduced to Europe for aquaculture purposes, and has had a rapid and unforeseen northward expansion in northern Europe. The recent dramatic increase in number of C. gigas populations along the species’ northern distribution limit has questioned the efficiency of Skagerrak as a dispersal barrier for transport and survival of larvae. We investigated the genetic connectivity and possible spreading patterns between Pacific oyster populations on the southern Norwegian coast (4 localities) and Swedish and Danish populations by means of DNA microsatellite analysis of adult oysters, and by simulating larvae drift. In the simulations we used a 3D oceanographic model to explore the influence of recent climate change (1990–2010) on development, survival, and successful spreading of Danish and Swedish Pacific oyster larvae to Norwegian coastal waters. The simulations indicated adequate temperature conditions for development, survival, and settlement of larvae across the Skagerrak in warm years since 2000. However, microsatellite genotyping revealed genetic differences between the Norwegian populations, and between the Norwegian populations and the Swedish and Danish populations, the latter two populations being more similar. This patchwork pattern of genetic dissimilarity among the Norwegian populations points towards multiple local introduction routes rather than the commonly assumed unidirectional entry of larvae drifted from Denmark and Sweden. Alternative origins of introduction and implications for management, such as forecasting and possible mitigation actions, are discussed. Public Library of Science 2017-05-09 /pmc/articles/PMC5423667/ /pubmed/28486520 http://dx.doi.org/10.1371/journal.pone.0177481 Text en © 2017 Anglès d’Auriac et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Anglès d’Auriac, Marc B.
Rinde, Eli
Norling, Pia
Lapègue, Sylvie
Staalstrøm, André
Hjermann, Dag Ø.
Thaulow, Jens
Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced?
title Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced?
title_full Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced?
title_fullStr Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced?
title_full_unstemmed Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced?
title_short Rapid expansion of the invasive oyster Crassostrea gigas at its northern distribution limit in Europe: Naturally dispersed or introduced?
title_sort rapid expansion of the invasive oyster crassostrea gigas at its northern distribution limit in europe: naturally dispersed or introduced?
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5423667/
https://www.ncbi.nlm.nih.gov/pubmed/28486520
http://dx.doi.org/10.1371/journal.pone.0177481
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