Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs
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 pres...
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Online Access: | http://dx.doi.org/10.1002/ece3.8109 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8109 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8109 |
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crwiley:10.1002/ece3.8109 2024-06-02T08:00:04+00:00 Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs Karvonen, Anssi Beck, Samantha V. Skúlason, Skúli Kristjánsson, Bjarni K. Leblanc, Camille A. European Maritime and Fisheries Fund Academy of Finland 2021 http://dx.doi.org/10.1002/ece3.8109 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8109 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8109 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 11, issue 20, page 14024-14032 ISSN 2045-7758 2045-7758 journal-article 2021 crwiley https://doi.org/10.1002/ece3.8109 2024-05-03T11:49:44Z 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. Article in Journal/Newspaper Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn Wiley Online Library Arctic Þingvallavatn ENVELOPE(-21.150,-21.150,64.183,64.183) Ecology and Evolution 11 20 14024 14032 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
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. |
author2 |
European Maritime and Fisheries Fund Academy of Finland |
format |
Article in Journal/Newspaper |
author |
Karvonen, Anssi Beck, Samantha V. Skúlason, Skúli Kristjánsson, Bjarni K. Leblanc, Camille A. |
spellingShingle |
Karvonen, Anssi Beck, Samantha V. Skúlason, Skúli Kristjánsson, Bjarni K. Leblanc, Camille A. Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs |
author_facet |
Karvonen, Anssi Beck, Samantha V. Skúlason, Skúli Kristjánsson, Bjarni K. Leblanc, Camille A. |
author_sort |
Karvonen, Anssi |
title |
Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs |
title_short |
Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs |
title_full |
Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs |
title_fullStr |
Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs |
title_full_unstemmed |
Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs |
title_sort |
variation in parasite resistance of arctic charr, salvelinus alpinus, between and within sympatric morphs |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ece3.8109 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8109 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8109 |
long_lat |
ENVELOPE(-21.150,-21.150,64.183,64.183) |
geographic |
Arctic Þingvallavatn |
geographic_facet |
Arctic Þingvallavatn |
genre |
Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn |
genre_facet |
Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn |
op_source |
Ecology and Evolution volume 11, issue 20, page 14024-14032 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.8109 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
20 |
container_start_page |
14024 |
op_container_end_page |
14032 |
_version_ |
1800744094684676096 |