RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Differentiation between populations of the Portuguese oyster, Crassostrea angulata (Lamark) and the Pacific oyster, Crassostrea gigas (Thunberg), revealed by mtDNA RFLP analysis

Auteur(s) / Author(s)

BOUDRY P. (1) ; HEURTEBISE S. (1) ; COLLET B. (1) ; CORNETTE F. (1) ; GERARD A. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) IFREMER, Laboratoire de Génétique, Aquaculture et Pathologie, B.P. 133, 17390 La Tremblade, FRANCE

Résumé / Abstract

Restriction fragment length polymorphisms of PCR-amplified mitochondrial DNA fragments were used to examine genetic differentiation between populations of the Portuguese oyster (Crassostrea angulata) and the Pacific oyster (Crassostrea gigas). The taxonomic status of C. angulata and C. gigas has often been questioned since no morphological or genetic differences had ever been observed between the two taxa. Samples identified as C. angulata, were collected from 16 sites located in southern Portugal and Spain and samples identified as C. gigas, from European and Asian sites. Of the six haplotypes observed, one was commonly found among oysters identified as C. gigas while another one was most frequent among oysters identified as C. angulata. Analysis of haplotype diversity among sites showed that samples originating from southern Portugal and Spain cluster with the Taiwanese sample. These results implicate Taiwan as the possible origin of European C. angulata populations. The ability to differentiate between these two previously indistinguishable taxa allowed us to identify a population in Portugal as mixed. These results open new perspectives for the study of characters previously described as varying between C. gigas and C. angulata, such as growth performance and disease susceptibility.

Revue / Journal Title

Journal of experimental marine biology and ecology    ISSN  0022-0981   CODEN JEMBAM 

Source / Source

1998, vol. 226, no2, pp. 279-291 (1 p.1/2)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1967) (Revue)

Mots-clés anglais / English Keywords

Differentiation

;

Animal population

;

Genetic variability

;

Restriction fragment length polymorphism

;

Mitochondrial DNA

;

Taxonomic character

;

Haplotype

;

Chemotaxonomy

;

Pacific Ocean

;

East Atlantic

;

Crassostrea angulata

;

Crassostrea gigas

;

Marine environment

;

Taxonomy

;

Bivalvia

;

Mollusca

;

Invertebrata

;

Mots-clés français / French Keywords

Différenciation

;

Population animale

;

Variabilité génétique

;

Polymorphisme longueur fragment restriction

;

DNA mitochondrial

;

Critère taxonomique

;

Haplotype

;

Chimiosystématique

;

Océan Pacifique

;

Océan Atlantique Est

;

Crassostrea angulata

;

Crassostrea gigas

;

Milieu marin

;

Systématique

;

Bivalvia

;

Mollusca

;

Invertebrata

;

Mots-clés espagnols / Spanish Keywords

Diferenciación

;

Población animal

;

Variabilidad genética

;

Polimorfismo longitud fragmento restricción

;

DNA mitocondrial

;

Criterio taxonómico

;

Haplotipo

;

Quimiotaxonomía

;

Océano Pacífico

;

Oceáno Atlántico Este

;

Crassostrea angulata

;

Crassostrea gigas

;

Medio marino

;

Sistemática

;

Bivalvia

;

Mollusca

;

Invertebrata

;

Localisation / Location

INIST-CNRS, Cote INIST : 7185, 35400007681787.0080

Nº notice refdoc (ud4) : 2346005



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas