A1 Journal article (refereed)
Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs (2021)
Karvonen, A., Beck, S. V., Skúlason, S., Kristjánsson, B. K., & Leblanc, C. A. (2021). Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs. Ecology and Evolution, 11(20), 14024-14032. https://doi.org/10.1002/ece3.8109
JYU authors or editors
Publication details
All authors or editors: Karvonen, Anssi; Beck, Samantha V.; Skúlason, Skúli; Kristjánsson, Bjarni K.; Leblanc, Camille A.
Journal or series: Ecology and Evolution
eISSN: 2045-7758
Publication year: 2021
Publication date: 14/09/2021
Volume: 11
Issue number: 20
Pages range: 14024-14032
Publisher: Wiley-Blackwell
Publication country: United Kingdom
Publication language: English
DOI: https://doi.org/10.1002/ece3.8109
Research data link: https://doi.org/10.5061/dryad.bvq83bk95
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/77881
Abstract
Genetic variation in resistance against parasite infections is a predominant feature in host–parasite systems. However, mechanisms maintaining genetic polymorphism in resistance in natural host populations are generally poorly known. We explored whether differences in natural infection pressure between resource-based morphs of Arctic charr (Salvelinus alpinus) have resulted in differentiation in resistance profiles. We experimentally exposed offspring of two morphs from Lake Þingvallavatn (Iceland), the pelagic planktivorous charr (“murta”) and the large benthivorous charr (“kuðungableikja”), to their common parasite, eye fluke Diplostomum baeri, infecting the eye humor. We found that there were no differences in resistance between the morphs, but clear differences among families within each morph. Moreover, we found suggestive evidence of resistance of offspring within families being positively correlated with the parasite load of the father, but not with that of the mother. Our results suggest that the inherited basis of parasite resistance in this system is likely to be related to variation among host individuals within each morph rather than ecological factors driving divergent resistance profiles at morph level. Overall, this may have implications for evolution of resistance through processes such as sexual selection.
Keywords: variation (biology); genetic variation; resistance (medicine); parasitism; parasites; trematoda; arctic char
Free keywords: adaptive radiation; breeding coloration; freshwater fish ecotype; host– parasite interaction; immunogenes; speciation; trematode
Contributing organizations
Related projects
- Survival of stocked fish in the wild
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- Centre for Economic Development, Transport and the Environment of Lapland
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- Research Council of Finland
- Environmental effects on complex parasite interactions: implications for disease epidemiology and prevention
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- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2021
JUFO rating: 1