Genetic and morphological differences between yellowtail kingfish (Seriola lalandi) from the Bohai Sea, China and the Southern Ocean, Australia

Qiaoyun Ai; Longlong Sang; Hongxin Tan; Xuxiong Huang; Baolong Bao; Chenhong Li

Aquaculture and Fisheries (May 2021)

Genetic and morphological differences between yellowtail kingfish (Seriola lalandi) from the Bohai Sea, China and the Southern Ocean, Australia

Qiaoyun Ai,
Longlong Sang,
Hongxin Tan,
Xuxiong Huang,
Baolong Bao,
Chenhong Li

Affiliations

Qiaoyun Ai: Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
Longlong Sang: Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
Hongxin Tan: National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai Science and Technology Committee, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Agriculture and Rural Affairs of PR China, Shanghai, 201306, China
Xuxiong Huang: National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai Science and Technology Committee, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Agriculture and Rural Affairs of PR China, Shanghai, 201306, China; Shanghai University Knowledge Service Platform, Shanghai Ocean University, Aquatic Animal Breeding Center, ZF1206, Shanghai, 201306, China
Baolong Bao: Key Laboratory of Freshwater Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Agriculture and Rural Affairs of PR China, Shanghai, 201306, China
Chenhong Li: Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Corresponding author. 999 Huchenghuan Road, Shanghai, 201306, China.

Journal volume & issue: Vol. 6, no. 3
pp. 260 – 266

Abstract

Read online

The aquaculture of yellowtail kingfish (Seriola lalandi) has expanded around the globe, including China. Genetic resource of Chinese S. lalandi urgently needs to be assessed for improving production. Here, we collected wild S. lalandi samples from the Bohai Sea, China and evaluated its genetic diversity based on 17,690 nuclear loci. A population from the Southern Ocean, Australia was used for comparison. The analyses showed that the Chinese and Australian S. lalandi formed two completely distinct clusters and there was no genetic introgression from the Australian S. lalandi into the Chinese S. lalandi population. The genetic diversity is slightly lower, but comparable in Chinese versus Australian yellowtail kingfish (Chinese population, expected heterozygosity: 0.19, observed heterozygosity: 0.19, nucleotide diversity: 0.19 ± 0.09; Australian population, expected heterozygosity: 0.23, observed heterozygosity: 0.22, nucleotide diversity: 0.22 ± 0.11). Overall, our results indicated that Chinese S. lalandi could be a potential subject for genetic breeding programs. We also investigated morphological characters and developed molecular markers for population identification. Comparison of meristic characters between the Chinese population and the Australian population revealed that main shape difference were in the number of dorsal spines, dorsal fin rays and the number of upper gill rakers. Geometric morphology based on eight landmarks also revealed significant difference between the two populations including the distance between the tip of snout to origin of pelvic fin and the distance between the tip of snout to origin of pectoral fin. These morphological characters can be used for easy identification of the Chinese S. lalandi.

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

About the journal

Abstract

Keywords