Genetic parameters for traits affecting consumer preferences for the Portuguese oyster, Crassostrea angulata

Van Sang Vu; Wayne R Knibb; Wayne A O'Connor; Ngoc Thi Hong Nguyen; Van I Vu; Michael Dove; Nguyen Hong Nguyen

doi:10.1016/j.aquaculture.2020.735391

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Genetic parameters for traits affecting consumer preferences for the Portuguese oyster, Crassostrea angulata

Journal article

Peer reviewed

Genetic parameters for traits affecting consumer preferences for the Portuguese oyster, Crassostrea angulata

Van Sang Vu, Wayne R Knibb, Wayne A O'Connor, Ngoc Thi Hong Nguyen, Van I Vu, Michael Dove and Nguyen Hong Nguyen

Aquaculture, Vol.526, 735391

2020

DOI: https://doi.org/10.1016/j.aquaculture.2020.735391

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Abstract

genetic improvement

oyster

heritability

correlation

meat quality traits

Production of the Portuguese oyster, Crassostrea angulata, is increasing rapidly in Vietnam, and consumer preferences for oyster appearance and meat quality have become more economically important. However, no studies have been conducted to estimate genetic parameters of meat colour, edible traits and the occurrence of disfiguring parasite infestation in any oyster species. In this study, we report genetic parameters for parasite disease traits, objective measurements of shell and mantle colours (L*, a* and b* colour) and edible traits (water holding capacity, taste and tenderness) for a selectively bred Portuguese oyster breeding population. We applied a restricted maximum likelihood method to estimate genetic parameters for the traits studied. Heritability estimates for the colour measurements of shell and mantle were low to high (h2 = 0.13-0.57), whereas those obtained for the parasite diseases on shells and tissues were close to zero (h2 = 0.011). Interestingly, there was genetic variation in edible traits (h2 = 0.04-0.17). The genetic correlations among whole weight and parasitic shell and tissue disease traits was significant but unfavourable, whereas the genetic correlations between whole weight and water holding capacity was significant and favourable (rg = 0.87 ± 0.05). These suggest that a multi-trait restricted selection index should be used to improve productivity and economic returns for the oyster aquaculture sector.

Details

Title: Genetic parameters for traits affecting consumer preferences for the Portuguese oyster, Crassostrea angulata
Authors: Van Sang Vu (Author) - University of the Sunshine Coast - School of Science and Engineering
Wayne R Knibb (Author) - University of the Sunshine Coast - School of Science and Engineering
Wayne A O'Connor (Author) - University of the Sunshine Coast - School of Science and Engineering
Ngoc Thi Hong Nguyen (Author)
Van I Vu (Author) - Research Institute for Aquaculture number 1, Vietnam
Michael Dove (Author) - Port Stephens Fisheries Institute
Nguyen Hong Nguyen (Author) - University of the Sunshine Coast - School of Science and Engineering
Publication details: Aquaculture, Vol.526, 735391
Publisher: Elsevier BV
Date published: 2020
DOI: 10.1016/j.aquaculture.2020.735391
ISSN: 0044-8486; 0044-8486
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99451605802621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Fisheries; Marine & Freshwater Biology

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Source: InCites