Genetic parameters for shell growth and survival in Portuguese oyster (Crassostrea angulata) larvae, juveniles, and adults

IF 2.2 3区农林科学 Q2 FISHERIES

Aquaculture International Pub Date : 2025-02-17 DOI:10.1007/s10499-025-01875-3

Thi Nhu Phuong Le, Pierre Boudry, Wayne O’Connor, Robert W. A. Potts, Almas A. Gheyas, Hsu Htoo, Thu Thi Anh Nguyen, Juergen Geist, In Van Vu, Thuy Thi La, Giang Truong Cao, Ha Minh Do, Tran Dang Khanh, Anh Tuan Dam, Anh Minh Nguyen, Sarifah Aini, Sang Van Vu

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引用次数: 0

Abstract

The Portuguese oyster, Crassostrea angulata, is an important aquaculture bivalve species in Asia, where it is native. This study was carried out to estimate genetic parameters for shell growth and survival over six generations of selection based on harvest whole weight. The phenotypic measurements including shell height and length, and survival rate at days 5, 25, and 150 were collected from the fourth to sixth generations. A linear mixed model was used to estimate heritability and genetic correlations at days 5, 25, and 150 after fertilization. Heritability estimates for shell height and length were high at three studied times, ranging from 0.27 to 0.76. Heritability estimates for survival (h² = 0.23–0.26) were lower than those found for shell growth traits and estimates of genetic correlations between survival and shell growth traits at the three studied ages were low (range − 0.056–0.189) and did not differ significantly from zero, suggesting that an index could be developed to improve two traits simultaneously.

查看原文本刊更多论文

葡萄牙牡蛎（Crassostrea angulata）幼体、幼体和成体外壳生长和存活的遗传参数

葡萄牙牡蛎（Crassostrea angulata）是亚洲一种重要的水产养殖双壳类动物。本研究以收获全重为基础，通过6代的选择，估计了壳生长和存活的遗传参数。从第4代到第6代收集表型数据，包括壳高和壳长，以及第5、25和150天的存活率。采用线性混合模型估计受精后第5、25和150天的遗传率和遗传相关性。在3个研究时段，壳高和壳长遗传力估计较高，范围为0.27 ~ 0.76。存活率的遗传力估计值（h2 = 0.23 ~ 0.26）低于壳生长性状的遗传力估计值（h2 = 0.23 ~ 0.26）， 3个年龄的存活率与壳生长性状的遗传相关性估计值较低（范围为- 0.056 ~ 0.189），且与零无显著差异，表明可以建立一个同时改善两种性状的指数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aquaculture International 农林科学-渔业

CiteScore

5.10

自引率

6.90%

发文量

204

审稿时长

1.0 months

期刊介绍： Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture. The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more. This is the official Journal of the European Aquaculture Society.