Page 96 - 《水产学报》2023年第1期

郭红会，等 水产学报, 2023, 47(1): 019606

Advances in environmental tolerance and resistance breeding in fish

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GUO Honghui , HU Zhen , ZHANG Jingang , ZOU Guiwei , LIANG Hongwei 1*
(1. Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China;
2. Hubei Aquaculture Technology Extension Center (Hubei Aquatic Breeds Introduction and Breeding Center),
Department of Agriculture and Rural Affairs of Hubei Province, Wuhan 430060, China)
Abstract: With the development of high-density and intensive aquaculture, the water environmental factors stress
such as dissolved oxygen, water temperature and ammonia nitrogen has become the restricting factor. The harmful
environmental conditions severely decrease the fish growth rate, reduce fish resistance and increase the susceptibil-
ity to diseases, which ultimately causes significant economic losses in aquaculture industry. The cultivation of new
resistance fish varieties is one of the important solutions and attracting more attention which is becoming the
research hot. In this review, we summarize the response mechanisms to environment stress including the temperat-
ure, hypoxia, ammonia nitrogen, nitrous nitrogen and saline-alkali stress from the physiology to molecules. Fur-
thermore, the breeding progress of new fish varieties with environmental tolerance and the molecular markers
(gene, SNP, SSR and so on) related to environmental tolerance traits are presented. Finally, we point out that the
first national aquaculture germplasm resources investigation should be applied to explore excellent germplasm
resources. The research on the integrated response mechanism of fish under multiple environmental factors stress
should be strengthened. Meanwhile, the efficient and precise breeding technology of the new varieties of environ-
ment-tolerance fish should be established based on the modern molecular breeding technologies such as molecular
marker-assisted breeding, genome selection breeding, gene editing breeding, molecular module design breeding
and so on. This review will provide the reference for the new fish varieties breeding with resistance.
Key words: aquaculture; environmental stress; resistance breeding; aquaculture seed industry
Corresponding author: LIANG Hongwei. E-mail: lianghw@yfi.ac.cn

Funding projects: Supported by China Agriculture Research System (CARS-45); Foundation of Hubei Hongshan
Laboratory (2021hskf014); National Key Research and Development Program (2018YFD0900302); Central Public-
interest Scientific Institution Basal Research Fund, CAFS (2020TD33)

https://www.china-fishery.cn 中国水产学会主办 sponsored by China Society of Fisheries
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