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In vivo and in vitro aging of common carp Cyprinus carpio sperm after multiple hormonal application and stripping of males

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Abstract

The present study was designed to evaluate sperm phenotypic variables during in vivo and in vitro storage following multiple sperm stripping in common carp (Cyprinus carpio L.). Each male was injected 3 times with carp pituitary 3 days apart. Sperm was stored in vivo in the body cavity for 0.5 days (Fresh sperm) and 3 days (Old sperm) after hormonal stimulation. Then sperm was collected and diluted with a carp extender at a ratio of 1:1, and stored in vitro on ice for 0, 3, and 6 days. The phenotypic parameters, including the number of total motile spermatozoa, number of fast motile spermatozoa, number of motile spermatozoa, percentage of fast motile spermatozoa, and percentage of spermatozoa motility were the major components of principal component analysis (PCA). In general, Fresh sperm from the first stripping showed slightly better quality than Old sperm from the second and third stripping, especially in the phenotypic parameters of a number of total spermatozoa and a number of total motile spermatozoa (P < 0.05). The highest kinetic and quantitative spermatozoa variables were obtained in Fresh and Old sperm just after sperm collection (0-day storage in vitro), and then they were decreased during the period of in vitro storage up to 6 days (P < 0.05). However, the fertilization, hatching, and malformation rates from Fresh sperm were similar compared with the Old sperm. Sperm could be stripped 0.5 days post hormonal treatment and stored in vitro up to 6 days with good fertilization performance (fertility, hatching, and malformation rates were 92.5%, 91.5%, and 1.3%, respectively). Therefore, our results suggested that multiple hormonal treatments with multiple stripping could be used in artificial reproduction in common carp.

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Acknowledgements

Thanks to the University of South Bohemia in Ceske Budejovice, the Faculty of Fisheries and Protection of Waters, the Genetic Fisheries Centre (GFC) provided fish for this study.

Funding

This study was funded by the Ministry of Education, Youth and Sports of the Czech Republic (LRI CENAKVA, LM2018099), by the Grant Agency of the University of South Bohemia in Ceske Budejovice (097/2019/Z, 037/2020/Z), by the Czech Science Foundation (20-01251S) and by the National Agency for Agriculture Research, Czech Republic (QK21010141). Songpei Zhang and Yu Cheng were supported by the Chinese Scholarship Council.

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Songpei Zhang conceived, designed, carried out experiments, performed statistical analysis, and wrote and revised the manuscript. Yu Cheng conceived, designed, carried out experiments, performed statistical analysis, and revised the manuscript. Zuzana Linhartová carried out experiments and revised the manuscript. Vladimíra Rodinová carried out experiments. Nururshopa Eskander Shazada revised manuscript. Qing Wu performed statistical analysis. Otomar Linhart conceived, designed, carried out experiments, and wrote and revised the manuscript.

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Correspondence to Otomar Linhart.

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The facility has the competence to perform experiments on animals (Act no. 246/1992 Coll., ref. number 16OZ19179/2016–17214). The expert committee approved the methodological protocol of the current study of the Institutional Animal Care and Use Committee of the FFPW according to the law on the protection of animals against cruelty (reference number: MSMT-6406/119/2). This research did not involve endangered or protected species. The authors of this study (ZL, and OL) own a certificate of professional competence for designing experiments and experimental projects under Sect. 15d (3) of Act no. 246/1992 Coll. on the Protection of Animals against Cruelty.

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Zhang, S., Cheng, Y., Linhartová, Z. et al. In vivo and in vitro aging of common carp Cyprinus carpio sperm after multiple hormonal application and stripping of males. Fish Physiol Biochem 48, 1235–1250 (2022). https://doi.org/10.1007/s10695-022-01114-z

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  • DOI: https://doi.org/10.1007/s10695-022-01114-z

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