AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Magallana gigas | |
Date of the first record (?) | 2007 References (not structured): Wrange et al. 2009, Biol Invasions Comments: In the southern part (region V) Pacific oyster was found at 6 out of 25 sites, with the most southerly location close to Falkenberg (Fig. 1). In the northern part of the west coast of Sweden (region VI) Pacific oyster was found at 36 out of 43 investigated sites (Table 1). The highest abundances were also found in the northern region. |
Recipient region (?) | Country: Sweden LME: 22. North Sea References (not structured): HELCOM/OSPAR Ballast Water Exemptions Decision Support Tool. Last visited 10.03.2020. http://jointbwmexemptions.org/ballast_water_RA/apex/f?p=104:13. |
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Source region (?) | LME: 22. North Sea --> LME sub-region: North Sea |
Pathway / Vector (?) | Level of certainty: Highly likely Pathway: Natural spread from neighboring countries Vector: (Highly likely) Water currents |
Habitat type (?) | Open coast Ports References (not structured): HELCOM/OSPAR Ballast Water Exemptions Decision Support Tool. Last visited 10.03.2020. http://jointbwmexemptions.org/ballast_water_RA/apex/f?p=104:13. |
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Wave exposure (?) | Exposed | |
Salinity range (?) | Not entered | |
Temperature range (?) | Not entered |
Zonation / Substratum (?) | Benthic: Sublittoral within photic zone Substratum: Artificial (manmade) Biogenic (living or nonliving) Hard (cobbles to bedrock) |
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Reproductive duration (?) | Not entered | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Common (Moderate level of certainty) References (not structured): Wrange et al. 2009, Biol Invasions Hollander et al 2015. Effects of the alien Pacific UOyster (Crassostrea gigas) on subtidal macrozooventhos. Marine Bilogy. Stand, Å. Lindegarth, S. 2014. Japanska ostron i svenska vatten (in swedish) http://vbcv.science.gu.se/digitalAssets/1492/1492246_japanska-ostron-i-svenska-vatten.pdf Comments: Despite fluctuations due to high wintermortality the species is common in large part of the Skagerak. |
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Species status (?) | Non-indigenous species |
Ports | Port: Brofjorden Date of the first record: 2020 Population status: Not entered References: HELCOM/OSPAR Ballast Water Exemptions Decision Support Tool. Last visited 10.03.2020. http://jointbwmexemptions.org/ballast_water_RA/apex/f?p=104:13. Comments: Recorded probably much earlier. |
Created by | Sergej Olenin, 2012-02-23 |
Last update by | Stephan Gollasch, 2020-03-10 |