Seasonal and age-related changes in sperm quality of farmed arctic charr (Salvelinus alpinus) ...

• Published in: Climatic Change
• Main Authors: Kurta, Khrystyna, Jeuthe, Henrik, Naboulsi, Rakan, de Koning, Dirk-Jan, Palaiokostas, Christos
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2023
• Subjects: Genetics; FOS Biological sciences; Arctic charr; Arctic; Salvelinus alpinus
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.6821341.v1; https://springernature.figshare.com/collections/Seasonal_and_age-related_changes_in_sperm_quality_of_farmed_arctic_charr_Salvelinus_alpinus_/6821341/1

Abstract Background Substantial variation in male fertility is regularly observed in farmed Arctic charr. However, detailed investigations of its fluctuation during a reproductive season and across years are lacking. Furthermore, information about the effect of underlying genetic factors influencing sperm quality is scarce. The current study focused on seasonal and age-related factors that may affect sperm quality characteristics in males reared in natural and delayed photoperiods. Animals were sampled three times for two consecutive years, and sperm quality parameters were recorded using a computer-assisted sperm analysis (CASA) system. Thereafter, high-throughput sequencing technologies were applied, aiming to identify genomic regions related to the variation of sperm quality throughout the reproductive season. Results An across-season variation in the recorded sperm quality parameters was evident. Overall, 29% and 42% of males from the natural and delayed spawning groups had a highly variable total ...