Comparative Bioenergetics of Diploid and Triploid Pacific Oysters Crassostreas gigas at Different Temperatures

Xiao Yan Li; Zhi Min Zhou

doi:10.4028/www.scientific.net/AMR.989-994.1033

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 989-994Comparative Bioenergetics of Diploid and Triploid...

Comparative Bioenergetics of Diploid and Triploid Pacific Oysters Crassostreas gigas at Different Temperatures

Abstract:

The energy budgets, assimilation and conversion efficiency of 1-year-old-triploid Pacific oysters Crassostrea gigas, were compared with those of sibling diploids to clarify the mechanism of energy metabolism. No significant difference was found between diploids and triploids in oxygen consumption. The net growth efficiencies of triploids and diploids were 37.4% and 33.9% respectively, and the gross growth efficiencies of them were 28.8% and 22.7%. The influence of ploidy and temperature on K₁ was significant, but the variation of K₂ may be attributable to ambient temperature. The ratio of gonad dry weight and dry tissue of triploids was 5%on average, and diploids about 25.6%. Our results showed that triploids, which do not reproduce and only have limited gonadal development, spend more energy for growth and more efficient in using energy than diploids do.

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Periodical:

Advanced Materials Research (Volumes 989-994)

Pages:

1033-1036

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.989-994.1033

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Online since:

July 2014

Authors:

Xiao Yan Li*, Zhi Min Zhou

Keywords:

Crassostrea gigas, Diploids, Energy Budget, Temperature, Triploids

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