Genetic Selection and Breeding for Improved Traits in Aquaculture Animals

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Animal Genetics and Genomics".

Deadline for manuscript submissions: 20 December 2025 | Viewed by 517

Special Issue Editors


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Guest Editor
1. Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
2. Genetics and Breeding Center for Blunt Snout Bream, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China
Interests: fish; genetic; breeding

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Guest Editor
Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
Interests: fish; genetic; breeding

Special Issue Information

Dear Colleagues,

This Special Issue is an important platform to promote the development of world aquatic science research, strengthen international academic exchanges, and showcase the latest scientific research achievements and progress in the field of aquatic science in different countries.

It will mainly publish papers and reviews on aquatic animal breeding research, aquaculture and breeding, aquaculture breeding technology development, fishery resources, fishery water environment protection, etc.

This Special Issue accepts theoretical and empirical research papers, particularly encouraging the combination of theory and empirical research. The published research results can represent the academic level and development trends in relation to aquaculture, reflecting new achievements and ideas in the research of aquaculture breeding technology worldwide.

Dr. Guodong Zheng
Dr. Wenzhi Guan
Guest Editors

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Keywords

  • aquatic animals
  • genetic improvement
  • molecular breeding
  • whole genome selection breeding
  • polyploidy and hybrid breeding

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Published Papers (1 paper)

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Research

13 pages, 4682 KiB  
Article
Artificial Induction of Meiotic Gynogenesis in Koi Carp Using Blunt Snout Bream Sperm and Identification of Gynogenetic Offspring
by Xiaoyu Chen, Xiulan Shi, Jun Guo, Kai Lin, Mingkun Luo and Zaijie Dong
Animals 2025, 15(10), 1411; https://doi.org/10.3390/ani15101411 - 13 May 2025
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Abstract
Artificial gynogenesis is an effective means of producing pure lines and is widely used for genetic analysis of fish and for sex control. In this study, inactivated sperm from heterogenous blunt snout bream (Megalobrama amblycephala, MA) were used to activate Kohaku koi [...] Read more.
Artificial gynogenesis is an effective means of producing pure lines and is widely used for genetic analysis of fish and for sex control. In this study, inactivated sperm from heterogenous blunt snout bream (Megalobrama amblycephala, MA) were used to activate Kohaku koi (Cyprinus carpio var. koi, CK) and produce high-quality female offspring. To determine whether the offspring were gynogenetic fish, the karyotype and DNA content of the CK, MA and the induced offspring (IO) were first compared and it was found that the IO were diploid with 100 chromosomes and their karyotype was 22m + 34sm + 22st + 22t. The DNA content of the IO was not significantly different from that of the CK. Subsequently, the amplified band profiles of CK, MA and IO were analyzed with species-specific microsatellite markers. The results showed that there were no amplified MA microsatellite bands in IO. The size of the amplified bands and the sequence of the 5S rDNA in CK, MA and IO were also analyzed. It was found that the amplified 5S rDNA gene fragments in IO contained two fragments that were both the same size as those of CK and matched more than 90% with those of CK. Finally, the sex of IO was verified using gonadal tissue sections. The result showed that IO was not an all-female population; males were also present (36.7%). In summary, a series of validation methods confirmed that the induced offspring were gynogenetic fish, which is the basis for the subsequent genetic improvement of pure lines of high-quality koi. Full article
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