A regulatory variant of tryptophan hydroxylase gene modulates transcription activity and biases growth rate in the Pacific oyster, Crassostrea gigas

Aquaculture ◽  
2021 ◽  
pp. 736906
Author(s):  
Liting Ren ◽  
Yongjing Li ◽  
Huiru Fu ◽  
Fuqiang Zhang ◽  
Ben Yang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Crassostrea Gigas ◽  
Tryptophan Hydroxylase ◽  
Pacific Oyster ◽  
Transcription Activity ◽  
Hydroxylase Gene ◽  
The Pacific ◽  
Regulatory Variant

scholarly journals Evidence of differential chromosome loss in aneuploid karyotypes of the Pacific oyster, Crassostrea gigas

Genome ◽  
2001 ◽  
Vol 44 (4) ◽  
pp. 735-737 ◽  
Author(s):  
A Leitão ◽  
P Boudry ◽  
C Thiriot-Quiévreux
Keyword(s):  
Growth Rate ◽  
Negative Correlation ◽  
Crassostrea Gigas ◽  
Homologous Chromosome ◽  
Pacific Oyster ◽  
Gill Tissue ◽  
Banding Technique ◽  
Chromosome Loss ◽  
The Pacific ◽  
Different Populations

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.

scholarly journals The negative correlation between somatic aneuploidy and growth in the oyster Crassostrea gigas and implications for the effects of induced polyploidization

1996 ◽  
Vol 68 (2) ◽  
pp. 109-116 ◽  
Author(s):  
E. Zouros ◽  
C. Thiriot-Quievreux ◽  
G. Kotoulas
Keyword(s):  
Growth Rate ◽  
Negative Correlation ◽  
Crassostrea Gigas ◽  
Inverse Relationship ◽  
Pacific Oyster ◽  
Chromosome Loss ◽  
Consistent Effect ◽  
The Pacific ◽  
Polyploid Cells ◽  
Recessive Genes

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.

Combined effects of pollutants and salinity on embryo-larval development of the Pacific oyster, Crassostrea gigas

2016 ◽  
Vol 113 ◽  
pp. 31-38 ◽  
Author(s):  
Perrine Gamain ◽  
Patrice Gonzalez ◽  
Jérôme Cachot ◽  
Patrick Pardon ◽  
Nathalie Tapie ◽  
...  
Keyword(s):  
Larval Development ◽  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Combined Effects ◽  
The Pacific

Differentially methylated gene regions between resistant and susceptible heat-phenotypes of the Pacific oyster Crassostrea gigas

Aquaculture ◽  
2021 ◽  
pp. 736923
Author(s):  
Roberto Arredondo-Espinoza ◽  
Ana M. Ibarra ◽  
Steven B. Roberts ◽  
Maria Teresa Sicard-Gonzalez ◽  
Cristina Escobedo-Fregoso
Keyword(s):  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
The Pacific ◽  
Differentially Methylated Gene
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