AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Magallana gigas [WoRMS] | |
Authority | (Thunberg, 1793) | |
Family | Ostreidae | |
Order | Ostreida | |
Class | Bivalvia | |
Phylum | Mollusca | |
Synonym (?) | Crassostrea angulata (Lamarck, 1819) Crassostrea gigas (Thunberg, 1793) Gryphaea angulata (Lamarck, 1819) Ostrea gigas (Thunberg, 1793) Ostrea laperousii (Schrenk,1861) Ostrea talienwhanensis (Crosse, 1862) References (not structured): Boudry, P, Heurtebise S, Collet B, Cornette F, Gérard A (1998) Differentiation between populations of the Portuguese oyster Crassostrea angulata (Lamarck) and the Pacific oyster Crassostrea gigas (Thunberg) revealed by mtDNA RFLP analysis. Journal of Experimental Marine Biology and Ecology, 226(2): 279–291. Buroker NE, Hershberger WS, Chew KK (1979) Population genetics of the family Ostreidae. I. Intraspecific studies of Crassostrea gigas and Saccostrea commercialis. Marine Biology, 54: 157 – 169 Crassostrea gigas FAO Factsheet: http://www.fao.org/fishery/species/3514/en. Accessed 19/11/2011 Huvet A, Lapegue S, et al (2000) "Mitochondrial and nuclear DNA phylogeography of Crassostrea angulata, the Portuguese oyster endangered in Europe." Conservation Genetics 1(3): 251-262 Huvet A, Balabaud K, Bierne N, Boudry P (2001) Microsatellite analysis of 6‐hour‐old embryos reveals no preferential intra‐specific fertilization between cupped oysters Crassostrea gigas and Crassostrea angulata. Marine Biotechnology, 3: 448 – 453 Huvet A, Gérard A, Ledu C, Phélipot P, Heurtebise S, Boudry P (2002) Is fertility of hybrids enough to conclude that the oysters Crassostrea gigas and Crassostrea angulata are the same species? Aquatic Living Resources, 15: 45 – 52 Leitao A, Chaves R, Santos S, Guedes‐Pinto H, Boudry P (2004) Restriction enzyme digestion chromosome banding confirms Crassostrea angulata × Crassostrea gigas F1 hybrids. Journal of Experimental Marine Biology and Ecology, 343: 253 – 260 Lopez‐Flores I, Hérran R, Garrido‐Ramos MA, Boudry P, Ruiz‐Rejón C, Ruiz‐Rejón M (2004) The molecular phylogeny of oysters based on a satellite DNA related to transposons. Genes, 339: 181 – 188 Mathers NF, Wilkins N P, et al. (1974)"Phosphoglucose isomerase and esterase phenotypes in Crassostrea angulata and C. gigas." Biochemical Systematics and Ecology 2(2): 93-96. Menzel R (1974) "Portuguese and Japanese oysters are the same species." Journal of the Fisheries Board of Canada 31(4): 453-456 Miossec L, Le Deuff RM, Goulletquer, P (2009) Alien species alert: Crassostrea gigas (Pacific oyster). ICES Cooperative Research Report No. 299. 42 pp Nehring S (2006): NOBANIS – Invasive Alien Species Fact Sheet – Crassostrea gigas. – From: Online Database of the North European and Baltic Network on Invasive Alien Species - NOBANIS www.nobanis.org, Access 21/11/2011 Reece KS, Cordes JF, Stubbs JB, Hudson KL, Francis EA (2008) Molecular phylogenies help resolve taxonomic confusion with Asian Crassostrea oyster species. Marine Biology, 153: 709 – 721 Comments: Whether C. gigas and C. angulata are the same species is a source of controversy (Miossec et al., 2009). Morphological, physiological and allozymic similarities support this theory alongside fertility of hybrids (Huvet et al., 2002) and some mitochondrial DNA analyses (Lopez‐Flores et al., 2004; Reece et al., 2008), however, small genetic differences also appear in mitochondrial DNA (Boudry et al., 1998; Huvet et al., 2000) and karotype (Leitao et al., 2004) analyses, proposing that the populations are genetically distant . The two taxa have also been considered as subspecies (Menzel, 1974) with the Portuguese oyster (C. angulata) being introduced in the 16th Century and also being of Japanese origin (Boudry et al., 1998; Huvet et al., 2000). |
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Sub-species level (?) | Crassostrea angulata |
Native origin (?) | Country: Japan Country: Korea, Democratic Peoples Republic of References (not structured): Miossec L, Le Deuff R M, Goulletquer P. Alien species alert: Crassostrea gigas (Pacific oyster)[J]. ICES Cooperative Research Report, 2009, 299. Comments: Shell middens of C.gigas were found in two regions: 1) Peter the Great Gulf, northwestern Sea of Japan coast, and 2) eastern coast of the Kunashir Island, an open Pacific Ocean shore. China is known to have the biggest aquaculture production of C.gigas in the world. |
Life form / Life stage (?) |
References (not structured): Dridi S, Romdhane MS et al (2006) Evidence of Crassostrea gigas reproduction in the Bizert lagoon, Tunisia. Journal of Biological Research 5: 35-45 Comments: Juvenile C.gigas (spat)are often collected from the wild and can then be cultured or shipped to another country for aquaculture; the main pathway for introductions. The resting phase is from November to January; the only period where gametogenesis does not occur. |
Sociability / Life stage (?) |
References (not structured): Karin T (2009) PACIFIC OYSTERS IN DUTCH ESTUARIES. Belgium, 27 November 2009: VLIZ Special Publication, 43. Vlaams Instituut voor de Zee (VLIZ): Oostende, Belgium. xiii+ 221 pp Miossec, L., R. M. Le Deuff, et al. (2009). "Alien species alert: Crassostrea gigas (Pacific oyster)." ICES Cooperative Research Report 299. Nehring S (2006) NOBANIS – Invasive Alien Species Fact Sheet – Crassostrea gigas. – From: Online Database of the North European and Baltic Network on Invasive Alien Species - NOBANIS www.nobanis.org, Access 20/11/2011 Comments: Larvae and eggs are free-living, except when larvae settle and become highly gregarious, preferring to settle on oyster shells or in areas where other individuals are present. |
Reproductive frequency (?) | Iteroparous References (not structured): Dridi S, Romdhane MS et al (2006) Evidence of Crassostrea gigas reproduction in the Bizert lagoon, Tunisia. Journal of Biological Research 5: 35-45 Comments: Gametogenesis occurs all year round except during the resting phase from November to January. |
Reproductive type (?) | Sexual References: Miossec L, Le Deuff RM et al (2009)Alien species alert: Crassostrea gigas (Pacific oyster). ICES Cooperative Research Report 299 Comments: C. gigas usually changed sexes during its life cycle, typically spawning first as a male and then as a female. Gametogenesis is induced at around 12° C depending on duration (degree days). At least 18 ‒ 20 ° C are needed for spawning. Fecundity is high; with females producing 20 ‒ 100 million eggs per spawn and fertilization takes place in the water column. |
Developmental trait (?) | Planktotrophy Spawning References: Miossec L, Le Deuff RM et al (2009)Alien species alert: Crassostrea gigas (Pacific oyster).ICES Cooperative Research Report 299 Comments: C.gigas is oviparous and a free-spawner, with fertilization occurs within the water column. |
Characteristic feeding method / Life stage (?) |
References (not structured): Crisp D, Yule A et al (1985)Feeding by oyster larvae: The functional response, energy budget and a comparison with mussel larvae. Journal of the Marine Biological Association of the United Kingdom. Plymouth 65(3): 759-783 Pauley, G.B., B. Van Der Raay & D. Troutt., 1988. Species profiles: life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest) Pacific oyster. U.S. Fish and Wildl. Serv. Biol. Rep. 82 (11.85). U.S. Army Corps of Engineers, TR EL-82.4 28 pp. National Introduced Marine Pest Information System (NIMPIS), 2002. Crassostrea gigas species summary. National Introduced Marine Pest Information System (Eds: Hewitt C.L., Martin R.B., Sliwa C., McEnnulty, F.R., Murphy, N.E., Jones T. & Cooper, S.). (Web publication) Karin T (2009) PACIFIC OYSTERS IN DUTCH ESTUARIES. Belgium, 27 November 2009: VLIZ Special Publication, 43. Vlaams Instituut voor de Zee (VLIZ): Oostende, Belgium. xiii+ 221 pp Comments: Planktonic larvae feed on a variety of micro-algae in the water column and are partially selective by size via the gills. Adults ingest bacteria, protozoa, a wide variety of diatoms, larval forms of other invertebrate animals, and detritus. |
Mobility / Life stage (?) |
References (not structured): Miossec L, Le Deuff RM et al (2009)Alien species alert: Crassostrea gigas (Pacific oyster).ICES Cooperative Research Report 299 Comments: Most of life cycle is spent as a sessile benthic organism, however gametes are released into the water and the larvae are free-living until settlement. |
Salinity tolerance range (?) | Exact range: 10 - 34 References: Hsieh H.L., Kao W.Y., Chen C.P., Liu P.J., 2000. Detrital flows through the feeding pathway of the oyster (Crassostrea gigas) in tropical shallow lagoon: δ13C signals. Marine Biology 136:677-684 |
Habitat modifying ability potential (?) | Keystone species OLD VALUE References: Cocito S (2004) Bioconstruction and biodiversity: their mutual influence. Scientia Marina 68(S1): 137-144 Guo X, Wang Y et al(2008) Oysters. Genome Mapping and Genomics in Fishes and Aquatic Animals: 163-175 Gutiérrez JL, Jones CG et al (2003) Mollusks as ecosystem engineers: the role of shell production in aquatic habitats. Oikos 101(1): 79-90 Miossec L, Le Deuff RM et al (2009) Alien species alert: Crassostrea gigas (Pacific oyster). ICES Cooperative Research Report 299 Tagliapietra D, Sigovini M Biological diversity and habitat diversity: a matter of Science and perception. Comments: --/OLD VALUES/-- Bioconstructor Ecosystem engineer Perennial habitat former (Anna) Form oyster reefs and can overgrow any other benthic organisms such as the blue mussel, Mytilus edulis. Some believe this to offer suitable habitats for other organisms and food resources however, some claim them to reduce biodiversity. |
Toxicity / Life stage (?) | Unknown Comments: Not available. |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Known References: Miossec, L., Le Deuff, R‐M., and Goulletquer, P. 2009. Alien species alert: Crassostrea gigas (Pacific oyster). ICES Cooperative Research Report No. 299. 42 pp. Smaal, A., van Stralen, M. and Craeymeersch, J., 2005. Does the introduction of the Pacific oyster Crassostrea gigas lead to species shifts in the Wadden Sea?. In The comparative roles of suspension-feeders in ecosystems (pp. 277-289). Springer, Dordrecht. Padilla, D.K., 2010. Context-dependent impacts of a non-native ecosystem engineer, the Pacific oyster Crassostrea gigas. Integrative and Comparative Biology, 50(2), pp.213-225. https://doi.org/10.1093/icb/icq080 AquaNIS. Editorial Board, 2015. Information system on Aquatic Non-Indigenous and Cryptogenic Species. World Wide Web electronic publication. www.corpi.ku.lt/databases/aquanis. Version 2.36+. Accessed 2021-07-27. Herbert, R.J., Humphreys, J., Davies, C.J., Roberts, C., Fletcher, S. and Crowe, T.P., 2016. Ecological impacts of non-native Pacific oysters (Crassostrea gigas) and management measures for protected areas in Europe. Biodiversity and Conservation, 25(14), pp.2835-2865. https://doi.org/10.1007/s10531-016-1209-4 Comments: It can potentially outcompete native species of commercial interest (e.g. Flat oysters)(Smaal et al., 2005; Miossec et al., 2009). |
Known measurable environmental impact? | Known References: Miossec, L., Le Deuff, R‐M., and Goulletquer, P. 2009. Alien species alert: Crassostrea gigas (Pacific oyster). ICES Cooperative Research Report No. 299. 42 pp. Smaal, A., van Stralen, M. and Craeymeersch, J., 2005. Does the introduction of the Pacific oyster Crassostrea gigas lead to species shifts in the Wadden Sea?. In The comparative roles of suspension-feeders in ecosystems (pp. 277-289). Springer, Dordrecht. Padilla, D.K., 2010. Context-dependent impacts of a non-native ecosystem engineer, the Pacific oyster Crassostrea gigas. Integrative and Comparative Biology, 50(2), pp.213-225. https://doi.org/10.1093/icb/icq080 AquaNIS. Editorial Board, 2015. Information system on Aquatic Non-Indigenous and Cryptogenic Species. World Wide Web electronic publication. www.corpi.ku.lt/databases/aquanis. Version 2.36+. Accessed 2021-07-27. Herbert, R.J., Humphreys, J., Davies, C.J., Roberts, C., Fletcher, S. and Crowe, T.P., 2016. Ecological impacts of non-native Pacific oysters (Crassostrea gigas) and management measures for protected areas in Europe. Biodiversity and Conservation, 25(14), pp.2835-2865. https://doi.org/10.1007/s10531-016-1209-4 Comments: Habitat alteration and displacement of native species (Smaal et al., 2005; Miossec et al., 2009; Padilla, 2010; Herbert et al., 2016). |
Included in the Target Species list? | Yes Comments: Assessed by the COMPLETE project experts (2021), included in target species list. |
Association with vessel vectors (?) | Anchor and anchor chains Ballast waters Biofouling References: Eno, N. C., A. Robin, and C.W.G. Sanderson. 1997. Non-native marine species in British waters: a review and directory. Joint Nature Conservation Committee Monkstone House, City Road Peterborough PE1 1JY UK. Gollasch S, Macdonald E, Belson S, Botnen H, Christensen JT, Hamer JP, Houvenaghel G, Jelmert A, Lucas I, Masson D, McCollin T, Olenin S, Persson A, Wallentinus I, Wetsteyn LPMJ, Wittling T (2002) Life in Ballast Tanks In: Invasive aquatic species of Europe - distribution, impact and management. Leppäkoski, E., S. Gollasch & S. Olenin (eds). Kluwer Academic Publishers: 217-231 http://www.corpi.ku.lt/nemo/aqua_app_gollasch.pdf Diederich S, Nehls G, Beusekom JEE, Reise K (2005)Introduced Pacific oysters (Crassostrea gigas) in the northern Wadden Sea: invasion accelerated by warm summers? Helgoland Marine Research, Volume 59, Issue 2, 97 - 106 Comments: In the North Sea imports of C. gigas started in 1964 in the Netherlands, followed by transports to England, France, and Germany. Whereas only sporadic natural spatfalls occurred in Great Britain, wild oyster populations are growing fast in France as well as in the Netherlands. The spread of the Pacific oyster in the northern Wadden Sea began 5 years after the first German oyster farm had started its business off the island of Sylt in 1986. |
Last update by | Monika Pelėdienė, 2022-01-19 |