Kurta, Khrystyna
- Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
Sammanfattning
Gaps in knowledge exist regarding sperm quality in farmed fish and its variation with age. The literature shows differing results among populations with diverse genetic backgrounds. Data collected from captive mass-spawning Norwegian Arctic charr were analysed to investigate sperm quality parameters and their age-related variations. We conducted a retrospective review of 63 milt analysis records from broodfish aged 2-9 years. Sperm motility and kinetic parameters decreased significantly (p < 0.05) with advancing age, whereas no significant changes were observed in sperm concentration. A regression model explaining approximately 30% of the variation (adjusted R-2 approximate to 0.3) suggested a significant and negative effect of age on sperm swimming velocities (p < 0.05). Finally, the analysis of the ddRAD data did not reveal significant genetic associations. Overall, this study provides valuable insights into age-related trends and may serve as a foundation for further investigations into the sperm quality performance of populations with varying reproductive strategies and genetic structures.
Nyckelord
aquaculture; Arctic charr; ddRAD; fertility; sperm quality
Publicerad i
Aquaculture, fish and fisheries
2025, volym: 5, nummer: 4, artikelnummer: e70111
Utgivare: WILEY
SLU författare
Palaiokostas, Christos
- Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
- Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Fisk- och akvakulturforskning
Publikationens identifierare
- DOI: https://doi.org/10.1002/aff2.70111
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/143485