Faculty Opinions recommendation of The Pacific oyster, Crassostrea gigas, shows negative correlation to naturally elevated carbon dioxide levels: Implications for near-term ocean acidification effects

Author(s):  
Russell Moll
Genome ◽  
2001 ◽  
Vol 44 (4) ◽  
pp. 735-737 ◽  
Author(s):  
A Leitão ◽  
P Boudry ◽  
C Thiriot-Quiévreux

The G-banding technique was performed on aneuploid karyotypes from gill tissue of the Pacific oyster, Crassostrea gigas, to assess whether chromosome losses could be explained by differential chromosomal susceptibility and to clarify the negative correlation between aneuploidy and growth rate previously reported in different populations of this oyster. The study of 95 G-banded aneuploid karyotypes showed that only 4 of the 10 chromosome pairs (viz. 1, 5, 9, and 10) of C. gigas were affected by the loss of one homologous chromosome. Pairs 1, 9, and 10, which were lost in 56, 33, and 44% of cases, respectively, may be considered to be differentially affected. Hypotheses on this differential chromosomal susceptibility are discussed.Key words: aneuploidy, growth, G-banding, karyotype, oyster.


2016 ◽  
Vol 49 ◽  
pp. 24-33 ◽  
Author(s):  
Qing Wang ◽  
Ruiwen Cao ◽  
Xuanxuan Ning ◽  
Liping You ◽  
Changkao Mu ◽  
...  

2016 ◽  
Vol 135 ◽  
pp. 151-161 ◽  
Author(s):  
Ewan Harney ◽  
Sébastien Artigaud ◽  
Pierrick Le Souchu ◽  
Philippe Miner ◽  
Charlotte Corporeau ◽  
...  

1996 ◽  
Vol 68 (2) ◽  
pp. 109-116 ◽  
Author(s):  
E. Zouros ◽  
C. Thiriot-Quievreux ◽  
G. Kotoulas

SummaryThis study extends previous observations that chromosome loss in somaticcells of juveniles of the pacific oyster Crassostrea gigas is associated with reduced growth rate. All four studies designed to examine this association (two usingrandom population samples and two using full sibs) produced the same result. This consistent effect appears to be unrelated with the commonly, but not consistently, observed correlation between degree of allozyme heterozygosity and growth. We propose thatthe inverse relationship between aneuploidy and growth is due to the unmasking of deleterious recessive genes caused by ‘progressive haploidization’ of somatic cells. Because unmasking of deleterious recessive genes by random chromosome lossisunlikely in polyploid cells, this hypothesis may also provide an explanation for theobservation that artificially produced polyploid shellfish usually grow at faster rates than normal diploid ones.


Aquaculture ◽  
2021 ◽  
pp. 737365
Author(s):  
Ning Kong ◽  
Shuo Han ◽  
Qiang Fu ◽  
Zichao Yu ◽  
Lingling Wang ◽  
...  

Aquaculture ◽  
2001 ◽  
Vol 193 (1-2) ◽  
pp. 39-48 ◽  
Author(s):  
Alexandra Leitão ◽  
Pierre Boudry ◽  
Catherine Thiriot-Quiévreux

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