Association among growth, food consumption-related traits and amylase gene polymorphism in the Pacific oyster Crassostrea gigas

Animal Genetics
A HuvetS Pouvreau

Abstract

To examine further a previously reported association between amylase gene polymorphism and growth in the Pacific oyster Crassostrea gigas, ecophysiological parameters and biochemical and molecular expression levels of alpha-amylase were studied in Pacific oysters of different amylase genotypes. Genotypes that previously displayed significantly different growth were found to be significantly different for ingestion and absorption efficiency. These estimated parameters, used in a dynamic energy budget model, showed that observed ingestion rates (unlike absorption efficiencies) allowed an accurate prediction of growth potential in these genotypes. The observed association between growth and amylase gene polymorphism is therefore more likely to be related to ingestion than to absorption efficiency. Additionally, relative mRNA levels of the two amylase cDNAs were also strongly associated with amylase gene polymorphism, possibly reflecting variation in an undefined regulatory region, although no corresponding variation was observed in specific amylase activity. Amylase gene sequences were determined for each genotype, showing the existence of only synonymous or functionally equivalent non-synonymous polymorphisms. The observed associ...Continue Reading

References

Jun 29, 2004·Biochemical and Biophysical Research Communications·C FabiouxM Le Pennec
May 9, 2007·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Gilles Le MoullacAlain Van Wormhoudt

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Citations

Feb 15, 2011·Annual Review of Physiology·William H KarasovEnrique Caviedes-Vidal
Dec 14, 2011·Biomarkers : Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals·Elise DavidDario Moraga
Nov 28, 2015·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Audrey BarrangerFarida Akcha
Sep 7, 2014·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Erick PereraJuan Miguel Mancera
Apr 18, 2015·The Journal of Experimental Biology·Arnaud HuvetCaroline Fabioux

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