Identification of quantitative trait loci for growth traits in red swamp crayfish (Procambarus clarkii)

Junxiao Sun; Cuirong Luo; Bo Peng; Guohui Peng; Yunfei Tan; Xufeng Bai

Aquaculture and Fisheries (Nov 2023)

Identification of quantitative trait loci for growth traits in red swamp crayfish (Procambarus clarkii)

Junxiao Sun,
Cuirong Luo,
Bo Peng,
Guohui Peng,
Yunfei Tan,
Xufeng Bai

Affiliations

Junxiao Sun: National Key Laboratory of Crop Genetic Improvement, Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, 430070, China; College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
Cuirong Luo: National Key Laboratory of Crop Genetic Improvement, Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
Bo Peng: National Key Laboratory of Crop Genetic Improvement, Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, 430070, China; College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
Guohui Peng: National Key Laboratory of Crop Genetic Improvement, Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, 430070, China; College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
Yunfei Tan: National Key Laboratory of Crop Genetic Improvement, Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, 430070, China; College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
Xufeng Bai: National Key Laboratory of Crop Genetic Improvement, Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Hongshan Laboratory, Wuhan, 430070, China; College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China; Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China; Corresponding author. National Key Laboratory of Crop Genetic Improvement, Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, 430070, China.

Journal volume & issue: Vol. 8, no. 6
pp. 727 – 736

Abstract

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Genetic breeding is an important approach to improve the economic traits of aquaculture animals. Unfortunately, the genetic basis for important economic traits of red swamp crayfish, including growth-related traits, has not yet been reported. In the present study, two full-sib families and two natural populations were employed to identify quantitative trait loci (QTLs) for growth-related traits of red swamp crayfish. In total, 28 QTLs for five growth-related traits, including body weight, body length, carapace length, carapace width, and abdomen length, were repeatedly identified in more than two families/populations, by means of association analysis; nine of these displayed a heterosis effect. The phenotypic variations of the five investigated traits explained by the 28 QTLs ranged from 4.2% to 19.0%. Eight additive and three heterosis QTLs were further successfully validated using comparative analysis of favoured alleles between the small and big size crayfish groups in the natural population. In conclusion, this study investigated the genetic basis of growth-related traits in red swamp crayfish, which is of great significance for their application in the future molecular breeding of the species.

Published in Aquaculture and Fisheries

ISSN: 2468-550X (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Agriculture: Aquaculture. Fisheries. Angling
Website: https://www.keaipublishing.com/en/journals/aquaculture-and-fisheries

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