Preparing for the future offspring : European perch (Perca fluviatilis) biosynthesis of physiologically required fatty acids for the gonads happens already in the autumn
Rigaud, C., Kahilainen, K. K., Calderini, M. L., Pilecky, M., Kainz, M. J., Tiirola, M., & Taipale, S. J. (2023). Preparing for the future offspring : European perch (Perca fluviatilis) biosynthesis of physiologically required fatty acids for the gonads happens already in the autumn. Oecologia, 203, 477-489. https://doi.org/10.1007/s00442-023-05480-0
Julkaistu sarjassa
OecologiaTekijät
Päivämäärä
2023Oppiaine
ResurssiviisausyhteisöHyvinvoinnin tutkimuksen yhteisöAkvaattiset tieteetNanoscience CenterEkologia ja evoluutiobiologiaYmpäristötiedeSchool of Resource WisdomSchool of WellbeingAquatic SciencesNanoscience CenterEcology and Evolutionary BiologyEnvironmental ScienceTekijänoikeudet
© 2023 the Authors
Long-chain polyunsaturated fatty acids (PUFA) are critical for reproduction and thermal adaptation. Year-round variability in the expression of fads2 (fatty acid desaturase 2) in the liver of European perch (Perca fluviatilis) in a boreal lake was tested in relation to individual variation in size, sex, and maturity, together with stable isotopes values as well as fatty acids (FA) content in different tissues and prey items. ARA and DHA primary production was restricted to the summer months, however, perch required larger amounts of these PUFA during winter, as their ARA and DHA muscle content was higher compared to summer. The expression of fads2 in perch liver increased during winter and was higher in mature females. Mature females stored DHA in their gonads already in late summer and autumn, long before the upcoming spring spawning period in May. Lower δ13CDHA values in the gonads in September suggest that these females actively synthesized DHA as part of this reproductive investment. Lower δ13CARA values in the liver of all individuals during winter suggest that perch were synthesizing essential FA to help cope with over-wintering conditions. Perch seem able to modulate its biosynthesis of physiologically required PUFA in situations of stress (fasting or cold temperatures) or in situations of high energetic demand (gonadal development). Biosynthesis of physiologically required PUFA may be an important part of survival and reproduction in aquatic food webs with long cold periods.
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Julkaisija
SpringerISSN Hae Julkaisufoorumista
0029-8549Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/194505647
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Suomen AkatemiaRahoitusohjelmat(t)
Akatemiahanke, SALisätietoja rahoituksesta
Open Access funding provided by University of Jyväskylä (JYU). The present study was funded by the Academy of Finland (project 333564 granted to Sami J. Taipale). Kimmo K. Kahilainen thanks Hämeenlinna City, Häme Council and Vanajavesikeskus for funding.Lisenssi
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