Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs
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 betw...
Published in: | Ecology and Evolution |
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2021
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Online Access: | https://pure.uhi.ac.uk/en/publications/7d180f76-28af-4d77-a91e-ea4f17f42670 https://doi.org/10.1002/ece3.8109 https://pureadmin.uhi.ac.uk/ws/files/24821244/Ecology_and_Evolution_2021_Karvonen_Variation_in_parasite_resistance_of_Arctic_charr_Salvelinus_alpinus_between_and.pdf https://onlinelibrary.wiley.com/doi/10.1002/ece3.8109 |
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ftuhipublicatio:oai:pure.atira.dk:publications/7d180f76-28af-4d77-a91e-ea4f17f42670 2024-06-23T07:48:32+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. 2021-10-01 application/pdf https://pure.uhi.ac.uk/en/publications/7d180f76-28af-4d77-a91e-ea4f17f42670 https://doi.org/10.1002/ece3.8109 https://pureadmin.uhi.ac.uk/ws/files/24821244/Ecology_and_Evolution_2021_Karvonen_Variation_in_parasite_resistance_of_Arctic_charr_Salvelinus_alpinus_between_and.pdf https://onlinelibrary.wiley.com/doi/10.1002/ece3.8109 eng eng https://pure.uhi.ac.uk/en/publications/7d180f76-28af-4d77-a91e-ea4f17f42670 info:eu-repo/semantics/openAccess 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 , vol. 11 , no. 20 , pp. 14024-14032 . https://doi.org/10.1002/ece3.8109 article 2021 ftuhipublicatio https://doi.org/10.1002/ece3.8109 2024-05-27T23:56:27Z 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 Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn University of the Highlands and Islands: Research Database of UHI Arctic Þingvallavatn ENVELOPE(-21.150,-21.150,64.183,64.183) Ecology and Evolution 11 20 14024 14032 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
description |
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. |
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 |
publishDate |
2021 |
url |
https://pure.uhi.ac.uk/en/publications/7d180f76-28af-4d77-a91e-ea4f17f42670 https://doi.org/10.1002/ece3.8109 https://pureadmin.uhi.ac.uk/ws/files/24821244/Ecology_and_Evolution_2021_Karvonen_Variation_in_parasite_resistance_of_Arctic_charr_Salvelinus_alpinus_between_and.pdf https://onlinelibrary.wiley.com/doi/10.1002/ece3.8109 |
long_lat |
ENVELOPE(-21.150,-21.150,64.183,64.183) |
geographic |
Arctic Þingvallavatn |
geographic_facet |
Arctic Þingvallavatn |
genre |
Arctic Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn |
genre_facet |
Arctic Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn |
op_source |
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 , vol. 11 , no. 20 , pp. 14024-14032 . https://doi.org/10.1002/ece3.8109 |
op_relation |
https://pure.uhi.ac.uk/en/publications/7d180f76-28af-4d77-a91e-ea4f17f42670 |
op_rights |
info:eu-repo/semantics/openAccess |
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_ |
1802638914102493184 |