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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ftdoajarticles:oai:doaj.org/article:dd78385c55e14defa7ff1fd202abe221 2023-05-15T14:30:05+02:00 Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs Anssi Karvonen Samantha V. Beck Skúli Skúlason Bjarni K. Kristjánsson Camille A. Leblanc 2021-10-01T00:00:00Z https://doi.org/10.1002/ece3.8109 https://doaj.org/article/dd78385c55e14defa7ff1fd202abe221 EN eng Wiley https://doi.org/10.1002/ece3.8109 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8109 https://doaj.org/article/dd78385c55e14defa7ff1fd202abe221 Ecology and Evolution, Vol 11, Iss 20, Pp 14024-14032 (2021) adaptive radiation breeding coloration freshwater fish ecotype host–parasite interaction immunogenes speciation Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1002/ece3.8109 2022-12-31T11:48:52Z 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 Directory of Open Access Journals: DOAJ Articles Arctic Þingvallavatn ENVELOPE(-21.150,-21.150,64.183,64.183) Ecology and Evolution 11 20 14024 14032 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
adaptive radiation breeding coloration freshwater fish ecotype host–parasite interaction immunogenes speciation Ecology QH540-549.5 |
spellingShingle |
adaptive radiation breeding coloration freshwater fish ecotype host–parasite interaction immunogenes speciation Ecology QH540-549.5 Anssi Karvonen Samantha V. Beck Skúli Skúlason Bjarni K. Kristjánsson Camille A. Leblanc Variation in parasite resistance of Arctic charr, Salvelinus alpinus, between and within sympatric morphs |
topic_facet |
adaptive radiation breeding coloration freshwater fish ecotype host–parasite interaction immunogenes speciation Ecology QH540-549.5 |
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. |
format |
Article in Journal/Newspaper |
author |
Anssi Karvonen Samantha V. Beck Skúli Skúlason Bjarni K. Kristjánsson Camille A. Leblanc |
author_facet |
Anssi Karvonen Samantha V. Beck Skúli Skúlason Bjarni K. Kristjánsson Camille A. Leblanc |
author_sort |
Anssi Karvonen |
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 |
https://doi.org/10.1002/ece3.8109 https://doaj.org/article/dd78385c55e14defa7ff1fd202abe221 |
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, Vol 11, Iss 20, Pp 14024-14032 (2021) |
op_relation |
https://doi.org/10.1002/ece3.8109 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8109 https://doaj.org/article/dd78385c55e14defa7ff1fd202abe221 |
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_ |
1766303998300651520 |