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Titolo:
Negative correlation between aneuploidy and growth in the Pacific oyster, Crassostrea gigas: ten years of evidence
Autore:
Leitao, A; Boudry, P; Thiriot-Quievreux, C;
Indirizzi:
Univ Paris 06, CNRS, INSU, Observ Oceanol, F-06230 Villefranche Sur Mer, France Univ Paris 06 Villefranche Sur Mer France F-06230 ranche Sur Mer, France Stn IFREMER, Lab Genet & Pathol, F-17390 La Tremblade, France Stn IFREMERLa Tremblade France F-17390 ol, F-17390 La Tremblade, France
Titolo Testata:
AQUACULTURE
fascicolo: 1-2, volume: 193, anno: 2001,
pagine: 39 - 48
SICI:
0044-8486(20010201)193:1-2<39:NCBAAG>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
VIRGINICA; HETEROZYGOSITY; HETEROSIS; OSTREIDAE; ALLOZYME; SURVIVAL; THUNBERG; BIVALVIA; GENETICS; MATINGS;
Keywords:
aneuploidy; growth; chromosome; oyster; Crassostrea gigas;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Thiriot-Quievreux, C Univ Paris 06, CNRS, INSU, Observ Oceanol, BP 28, F-06230 Villefranche SurMer, France Univ Paris 06 BP 28 Villefranche Sur Mer France F-06230
Citazione:
A. Leitao et al., "Negative correlation between aneuploidy and growth in the Pacific oyster, Crassostrea gigas: ten years of evidence", AQUACULTURE, 193(1-2), 2001, pp. 39-48

Abstract

This study unites previous and new observations that chromosome loss in somatic cells of juveniles of the Pacific oyster Crassostrea gigas is associated with reduced growth rate. New data were obtained from four hatchery-produced progenies. Within each progeny, oysters of identical age were sampledand classified as fast-growing or slow-growing according to their shell length, or live weight. Chromosome numbers were individually scored from 30 randomly chosen metaphases from gill tissue. Although the diploid chromosomenumber in C. gigas is 2N = 20, hypodiploid cells of 2N = 19, 18 or 17 wereobserved in all progenies. The difference in percentage of aneuploidy between fast- and slow-growing oysters ranged from 5% to 22% and was highly significant. In one progeny, a highly significant negative correlation (R-2 = 0.58) was observed between individual level of aneuploidy and growth performances individually recorded under common controlled conditions. The consistency of the negative relationship between growth rate and aneuploidy was obvious in all populations studied between 1988 and 1999. However, when comparing aneuploidy between fast- and slow-growing oysters, two different groups of populations can be clearly distinguished. The question remains to determine the cause of these differences. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 13:14:47