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...
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ftpubmed:oai:pubmedcentral.nih.gov:8525083 2023-05-15T14:30:04+02:00 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. 2021-09-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525083/ https://doi.org/10.1002/ece3.8109 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525083/ http://dx.doi.org/10.1002/ece3.8109 © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Evol Research Articles Text 2021 ftpubmed https://doi.org/10.1002/ece3.8109 2021-10-31T00:30:07Z 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. Text Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn PubMed Central (PMC) Arctic Þingvallavatn ENVELOPE(-21.150,-21.150,64.183,64.183) Ecology and Evolution 11 20 14024 14032 |
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Research Articles |
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Research Articles 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 |
topic_facet |
Research Articles |
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 |
Text |
author |
Karvonen, Anssi Beck, Samantha V. Skúlason, Skúli Kristjánsson, Bjarni K. Leblanc, Camille A. |
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 |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525083/ https://doi.org/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 |
Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525083/ http://dx.doi.org/10.1002/ece3.8109 |
op_rights |
© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
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 |
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1766303991347544064 |