WoRMS taxon details

Magallana angulata (Lamarck, 1819)

1039387  (urn:lsid:marinespecies.org:taxname:1039387)

accepted
Species
Gryphaea angulata Lamarck, 1819 · unaccepted (original combination)
Gryphaea angulata Lamarck, 1801 · unaccepted > nomen nudum
Ostrea virginica var. lusitanica Osorio, 1916 · unaccepted > junior subjective synonym
marine
(of Gryphaea angulata Lamarck, 1819) Lamarck [J.-B. M.] de. (1819). <i>Histoire naturelle des animaux sans vertèbres</i>. Tome 6(1): vi + 343 pp. Paris: published by the author. , available online at http://www.biodiversitylibrary.org/item/47441
page(s): 198 [details] 
Type locality contained in Portuguese Exclusive Economic Zone  
type locality contained in Portuguese Exclusive Economic Zone (origin: alien) [from synonym] [view taxon] [details]
Taxonomy The Portuguese oyster Crassostrea [now Magallana] angulata and the Japanese oyster Crassostrea [now Magallana] gigas were...  
Taxonomy The Portuguese oyster Crassostrea [now Magallana] angulata and the Japanese oyster Crassostrea [now Magallana] gigas were described as distinct species with widely separated geographical origins - southwestern Europe and Japan respectively. In the 1970's C. gigas was introduced to the Atlantic coast of France in order to restore oyster farming affected by a disease of C. angulata, and it became evident that the two species could hybridize (Menzel, 1974, Huvet et al., 2004) and therefore were treated as synonyms (Huber, 2010).
During the recent years, however, several genetic studies based on mitochondrial DNA and microsatellite data have provided evidence that the two taxa are genetically distinct although closely related (see overview in Batista et al. 2005). Particularly, an average of 2.3% difference in CO1 sequence suggests that populations of C. gigas and C. angulata may have diverged several hundred thousand years ago (Hedgecock et al., 2004). Studies involving microsatellite markers have shown that there are low but clear genetic differences between the two taxons. From all recent studies, it seems clear that the European C. angulata was introduced in the XVI or XVIIth century from Taiwan, and can be recognized genetically from C. gigas introduced later from Japan.
Nevertheless the relationship of both taxa in intermediate locations remains to be elucidated. Lapègue et al. (2004) reported characteristic haplotypes of both C. gigas and C. angulata occurred in a population from northern China locally known as C. talienwhanensis Crosse, 1862; this could either mean that both species are distinct but overlap ranges, or that all those haplotypes are to be found in a single, geographically variable species.
Considering this state of the art, C. angulata and C. gigas are listed here separately but qualified as very closely related and still possibly conspecific.  [details]
MolluscaBase eds. (2024). MolluscaBase. Magallana angulata (Lamarck, 1819). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1039387 on 2024-11-22
Date
action
by
2017-10-10 06:35:56Z
created

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original description (of Gryphaea angulata Lamarck, 1819) Lamarck [J.-B. M.] de. (1819). <i>Histoire naturelle des animaux sans vertèbres</i>. Tome 6(1): vi + 343 pp. Paris: published by the author. , available online at http://www.biodiversitylibrary.org/item/47441
page(s): 198 [details] 

original description (of Ostrea complanata Fenaux, 1944) Fenaux A. (1944). Nouvelle espèce d'<i>Ostrea</i> de la Méditerranée.. <i>Bulletin de l'Institut Océanographique 861</i>: 1, pl. 1 fig. 1-2 [details] Available for editors  PDF available [request]

basis of record Salvi D. & Mariottini P. (2017 [nomenclatural availability: 2016]). Molecular taxonomy in 2D: a novel ITS2 rRNA sequence-structure approach guides the description of the oysters' subfamily Saccostreinae and the genus <i>Magallana</i> (Bivalvia: Ostreidae). <em>Zoological Journal of the Linnean Society.</em> 179(2): 263-276., available online at https://doi.org/10.1111/zoj.12455
page(s): 5, 9; note: new combitantion herein; Salvi & Mariottini (2016) treat Crassostrea angulata as a synonym of C. gigas but include all Asian Pacific species in Magallana [details] 
 
 Present  Present in aphia/obis/gbif/idigbio   Inaccurate  Introduced: alien  Containing type locality 
   

From editor or global species database
Taxonomy The Portuguese oyster Crassostrea [now Magallana] angulata and the Japanese oyster Crassostrea [now Magallana] gigas were described as distinct species with widely separated geographical origins - southwestern Europe and Japan respectively. In the 1970's C. gigas was introduced to the Atlantic coast of France in order to restore oyster farming affected by a disease of C. angulata, and it became evident that the two species could hybridize (Menzel, 1974, Huvet et al., 2004) and therefore were treated as synonyms (Huber, 2010).
During the recent years, however, several genetic studies based on mitochondrial DNA and microsatellite data have provided evidence that the two taxa are genetically distinct although closely related (see overview in Batista et al. 2005). Particularly, an average of 2.3% difference in CO1 sequence suggests that populations of C. gigas and C. angulata may have diverged several hundred thousand years ago (Hedgecock et al., 2004). Studies involving microsatellite markers have shown that there are low but clear genetic differences between the two taxons. From all recent studies, it seems clear that the European C. angulata was introduced in the XVI or XVIIth century from Taiwan, and can be recognized genetically from C. gigas introduced later from Japan.
Nevertheless the relationship of both taxa in intermediate locations remains to be elucidated. Lapègue et al. (2004) reported characteristic haplotypes of both C. gigas and C. angulata occurred in a population from northern China locally known as C. talienwhanensis Crosse, 1862; this could either mean that both species are distinct but overlap ranges, or that all those haplotypes are to be found in a single, geographically variable species.
Considering this state of the art, C. angulata and C. gigas are listed here separately but qualified as very closely related and still possibly conspecific.  [details]
    Definitions

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LanguageName 
Dutch Portugese oester [from synonym]  [details]
English Portuguese oyster [from synonym]  [details]
German Portugiesische Auster [from synonym]Greifmuschel [from synonym]  [details]