Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast
The Pacific oyster Crassostrea gigas was introduced in Europe for commercial purposes in the mid 1960s. It was initially thought that low winter temperatures would restrain this species' reproduction and settlement; however, its present distribution in areas where no introduction has taken plac...
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Language: | English |
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2007
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ftvliz:oai:oma.vliz.be:110152 2023-05-15T15:57:38+02:00 Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast Cardoso, J.F.M.F. Langlet, D. Loff, J.F. Martins, A.R. Witte, J. IJ. Santos, P.T. van der Veer, H.W. 2007 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=110152 en eng info:eu-repo/semantics/altIdentifier/wos/000246389500006 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.seares.2006.11.003 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=110152 info:eu-repo/semantics/restrictedAccess %3Ci%3EJ.+Sea+Res.+57%284%29%3C%2Fi%3E%3A+303-315.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.seares.2006.11.003%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.seares.2006.11.003%3C%2Fa%3E Age Cathodoluminescence Growth Oocytes Reproduction Spatial variations Crassostrea gigas (Thunberg 1793) [Portuguese oyster] Crassostrea gigas [Portuguese oyster] Europe Coasts info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2007 ftvliz https://doi.org/10.1016/j.seares.2006.11.003 2022-05-01T09:01:56Z The Pacific oyster Crassostrea gigas was introduced in Europe for commercial purposes in the mid 1960s. It was initially thought that low winter temperatures would restrain this species' reproduction and settlement; however, its present distribution in areas where no introduction has taken place suggests that natural invasion and expansion has occurred. Along the European coast, wild populations of Pacific oysters are already found from northern Germany to southern Portugal. Whether C. gigas will continue to further expand through northern waters will depend on its physiological performance. In this study, the performance of wild oyster populations has been studied in terms of growth and reproduction at three stations: La Rochelle (France; 46°N), Yerseke (Oosterschelde estuary, The Netherlands, 51°N), and Texel (Wadden Sea estuary, The Netherlands, 53°N). The French population had the lowest somatic-shell mass ratio and an increase in maximum shell length, somatic and gonadal mass was observed from France to the Netherlands. In addition, mean oocyte diameter decreased significantly from south to north. The combination of increasing gonadal mass and decreasing oocyte volume suggests an increasing reproductive output in terms of egg numbers from France to The Netherlands. Differences in temperature between locations will at least be partly responsible for the observed patterns; however, other environmental factors (such as food availability, predation pressure, sediment type and/or seston concentration) cannot be excluded. Since smaller eggs (oocytes) are thought to have a longer development time, the environmental conditions along the Dutch coast may result in increased larval dispersal and possibly in further population expansion. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Pacific Journal of Sea Research 57 4 303 315 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
topic |
Age Cathodoluminescence Growth Oocytes Reproduction Spatial variations Crassostrea gigas (Thunberg 1793) [Portuguese oyster] Crassostrea gigas [Portuguese oyster] Europe Coasts |
spellingShingle |
Age Cathodoluminescence Growth Oocytes Reproduction Spatial variations Crassostrea gigas (Thunberg 1793) [Portuguese oyster] Crassostrea gigas [Portuguese oyster] Europe Coasts Cardoso, J.F.M.F. Langlet, D. Loff, J.F. Martins, A.R. Witte, J. IJ. Santos, P.T. van der Veer, H.W. Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast |
topic_facet |
Age Cathodoluminescence Growth Oocytes Reproduction Spatial variations Crassostrea gigas (Thunberg 1793) [Portuguese oyster] Crassostrea gigas [Portuguese oyster] Europe Coasts |
description |
The Pacific oyster Crassostrea gigas was introduced in Europe for commercial purposes in the mid 1960s. It was initially thought that low winter temperatures would restrain this species' reproduction and settlement; however, its present distribution in areas where no introduction has taken place suggests that natural invasion and expansion has occurred. Along the European coast, wild populations of Pacific oysters are already found from northern Germany to southern Portugal. Whether C. gigas will continue to further expand through northern waters will depend on its physiological performance. In this study, the performance of wild oyster populations has been studied in terms of growth and reproduction at three stations: La Rochelle (France; 46°N), Yerseke (Oosterschelde estuary, The Netherlands, 51°N), and Texel (Wadden Sea estuary, The Netherlands, 53°N). The French population had the lowest somatic-shell mass ratio and an increase in maximum shell length, somatic and gonadal mass was observed from France to the Netherlands. In addition, mean oocyte diameter decreased significantly from south to north. The combination of increasing gonadal mass and decreasing oocyte volume suggests an increasing reproductive output in terms of egg numbers from France to The Netherlands. Differences in temperature between locations will at least be partly responsible for the observed patterns; however, other environmental factors (such as food availability, predation pressure, sediment type and/or seston concentration) cannot be excluded. Since smaller eggs (oocytes) are thought to have a longer development time, the environmental conditions along the Dutch coast may result in increased larval dispersal and possibly in further population expansion. |
format |
Article in Journal/Newspaper |
author |
Cardoso, J.F.M.F. Langlet, D. Loff, J.F. Martins, A.R. Witte, J. IJ. Santos, P.T. van der Veer, H.W. |
author_facet |
Cardoso, J.F.M.F. Langlet, D. Loff, J.F. Martins, A.R. Witte, J. IJ. Santos, P.T. van der Veer, H.W. |
author_sort |
Cardoso, J.F.M.F. |
title |
Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast |
title_short |
Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast |
title_full |
Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast |
title_fullStr |
Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast |
title_full_unstemmed |
Spatial variability in growth and reproduction of the Pacific oyster Crassostrea gigas (Thunberg, 1793) along the west European coast |
title_sort |
spatial variability in growth and reproduction of the pacific oyster crassostrea gigas (thunberg, 1793) along the west european coast |
publishDate |
2007 |
url |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=110152 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000246389500006 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.seares.2006.11.003 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=110152 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.seares.2006.11.003 |
container_title |
Journal of Sea Research |
container_volume |
57 |
container_issue |
4 |
container_start_page |
303 |
op_container_end_page |
315 |
_version_ |
1766393301533982720 |