Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas)
Human-mediated introduction of non-native species into coastal areas via aquaculture is one of the main pathways that can lead to biological invasions. To develop strategies to counteract invasions it is critical to determine whether populations establishing in the wild are self-sustaining or based...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:82010 2023-07-02T03:32:03+02:00 Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas) Kochmann, Judith Carlsson, Jens Crowe, Tasman P. Mariani, Stefano 2012-07-20T19:53:08.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-dn-9vg5 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:82010 unknown doi:10.5061/dryad.4g96s/1 doi:10.1093/jhered/ess042 PMID:22952271 http://nbn-resolving.org/urn:nbn:nl:ui:13-dn-9vg5 doi:10.5061/dryad.4g96s https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:82010 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2012 ftdans https://doi.org/10.5061/dryad.4g96s/110.1093/jhered/ess04210.5061/dryad.4g96s 2023-06-13T13:03:50Z Human-mediated introduction of non-native species into coastal areas via aquaculture is one of the main pathways that can lead to biological invasions. To develop strategies to counteract invasions it is critical to determine whether populations establishing in the wild are self-sustaining or based on repeated introductions. Invasions by the Pacific oyster (Crassostrea gigas) have been associated with the growing oyster aquaculture industry worldwide. In this study, temporal genetic variability of farmed and wild oysters from the largest enclosed bay in Ireland was assessed to reconstruct the recent biological history of the feral populations using seven anonymous and seven microsatellites linked to expressed sequence tags (ESTs). There was no evidence of EST-linked markers showing footprints of selection. Allelic richness was higher in feral than in aquaculture samples (p=0.003, paired t-test). Significant deviations from Hardy-Weinberg equilibrium (HWE) due to heterozygote deficiencies were detected for almost all loci and samples, most likely explained by the presence of null-alleles. Relatively high genetic differentiation was found between aquaculture and feral oysters (largest pairwise multilocus FST 0.074, p < 0.01) and between year classes of oysters from aquaculture (largest pairwise multilocus FST 0.073, p < 0.01), which was also confirmed by the strong separation of aquaculture and wild samples using Bayesian clustering approaches. A ten-fold higher effective population size (Ne) – and a high number of private alleles – in wild oysters suggest an established self-sustaining feral population. The wild oyster population studied appears demographically independent from the current aquaculture activities in the estuary and alternative scenarios of introduction pathways are discussed. Other/Unknown Material Crassostrea gigas Pacific oyster Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Pacific |
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Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Kochmann, Judith Carlsson, Jens Crowe, Tasman P. Mariani, Stefano Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas) |
topic_facet |
Life sciences medicine and health care |
description |
Human-mediated introduction of non-native species into coastal areas via aquaculture is one of the main pathways that can lead to biological invasions. To develop strategies to counteract invasions it is critical to determine whether populations establishing in the wild are self-sustaining or based on repeated introductions. Invasions by the Pacific oyster (Crassostrea gigas) have been associated with the growing oyster aquaculture industry worldwide. In this study, temporal genetic variability of farmed and wild oysters from the largest enclosed bay in Ireland was assessed to reconstruct the recent biological history of the feral populations using seven anonymous and seven microsatellites linked to expressed sequence tags (ESTs). There was no evidence of EST-linked markers showing footprints of selection. Allelic richness was higher in feral than in aquaculture samples (p=0.003, paired t-test). Significant deviations from Hardy-Weinberg equilibrium (HWE) due to heterozygote deficiencies were detected for almost all loci and samples, most likely explained by the presence of null-alleles. Relatively high genetic differentiation was found between aquaculture and feral oysters (largest pairwise multilocus FST 0.074, p < 0.01) and between year classes of oysters from aquaculture (largest pairwise multilocus FST 0.073, p < 0.01), which was also confirmed by the strong separation of aquaculture and wild samples using Bayesian clustering approaches. A ten-fold higher effective population size (Ne) – and a high number of private alleles – in wild oysters suggest an established self-sustaining feral population. The wild oyster population studied appears demographically independent from the current aquaculture activities in the estuary and alternative scenarios of introduction pathways are discussed. |
author |
Kochmann, Judith Carlsson, Jens Crowe, Tasman P. Mariani, Stefano |
author_facet |
Kochmann, Judith Carlsson, Jens Crowe, Tasman P. Mariani, Stefano |
author_sort |
Kochmann, Judith |
title |
Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas) |
title_short |
Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas) |
title_full |
Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas) |
title_fullStr |
Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas) |
title_full_unstemmed |
Data from: Genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of Pacific oysters (Crassostrea gigas) |
title_sort |
data from: genetic evidence for the uncoupling of local aquaculture activities and a population of an invasive species – a case study of pacific oysters (crassostrea gigas) |
publishDate |
2012 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-dn-9vg5 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:82010 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
doi:10.5061/dryad.4g96s/1 doi:10.1093/jhered/ess042 PMID:22952271 http://nbn-resolving.org/urn:nbn:nl:ui:13-dn-9vg5 doi:10.5061/dryad.4g96s https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:82010 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.4g96s/110.1093/jhered/ess04210.5061/dryad.4g96s |
_version_ |
1770271523209216000 |