Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system
Abstract Background The adaptive significance of female polyandry is currently under considerable debate. In non-resource based mating systems, indirect, i.e. genetic benefits have been proposed to be responsible for the fitness gain from polyandry. We studied the benefits of polyandry in the Arctic...
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ftdoajarticles:oai:doaj.org/article:3c80fd7475a345efac08d3d312f4803e 2023-05-15T14:30:12+02:00 Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system Peuhkuri Nina Figenschou Lars Janhunen Matti Rudolfsen Geir Kekäläinen Jukka Tamper Niina Kortet Raine 2010-01-01T00:00:00Z https://doi.org/10.1186/1471-2148-10-20 https://doaj.org/article/3c80fd7475a345efac08d3d312f4803e EN eng BMC http://www.biomedcentral.com/1471-2148/10/20 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-10-20 1471-2148 https://doaj.org/article/3c80fd7475a345efac08d3d312f4803e BMC Evolutionary Biology, Vol 10, Iss 1, p 20 (2010) Evolution QH359-425 article 2010 ftdoajarticles https://doi.org/10.1186/1471-2148-10-20 2022-12-31T11:06:54Z Abstract Background The adaptive significance of female polyandry is currently under considerable debate. In non-resource based mating systems, indirect, i.e. genetic benefits have been proposed to be responsible for the fitness gain from polyandry. We studied the benefits of polyandry in the Arctic charr ( Salvelinus alpinus ) using an experimental design in which the material investments by the sires and maternal environmental effects were controlled. Results Embryonic mortality showed a strong paternal genetic component, and it was lower in polyandrously fertilized offspring (sperm competition of two males) than in monandrous fertilizations. We also found that high sperm velocity was associated with low offspring mortality, but not with the size of the offspring or their yolk volume. Although no male effect was found on the size of the offspring yolk reserves, yolk volume was higher in offspring from polyandrous matings than offspring of the either of the two males when mated monandrously. Conclusions In support of the "good sperm hypothesis, we found that sperm velocity was positively associated with offspring fitness. In addition, our results suggest that polyandrous females gain genetic advantage (higher offspring survival) from this behavior, but that some benefits of polyandry (larger yolk volume) may not be explained solely by the additive genetic effects. This suggests that sperm competition environment may intensify the selection on genetically superior sperm which in turn may produce offspring that have superior yolk reserves. However, as high sperm velocity was not associated with larger yolk volume, it is possible that also some other non-genetic effects may contribute to offspring fitness. The potential role of polyandrous mating in inbreeding avoidance is discussed. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Directory of Open Access Journals: DOAJ Articles Arctic BMC Evolutionary Biology 10 1 20 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Evolution QH359-425 |
spellingShingle |
Evolution QH359-425 Peuhkuri Nina Figenschou Lars Janhunen Matti Rudolfsen Geir Kekäläinen Jukka Tamper Niina Kortet Raine Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system |
topic_facet |
Evolution QH359-425 |
description |
Abstract Background The adaptive significance of female polyandry is currently under considerable debate. In non-resource based mating systems, indirect, i.e. genetic benefits have been proposed to be responsible for the fitness gain from polyandry. We studied the benefits of polyandry in the Arctic charr ( Salvelinus alpinus ) using an experimental design in which the material investments by the sires and maternal environmental effects were controlled. Results Embryonic mortality showed a strong paternal genetic component, and it was lower in polyandrously fertilized offspring (sperm competition of two males) than in monandrous fertilizations. We also found that high sperm velocity was associated with low offspring mortality, but not with the size of the offspring or their yolk volume. Although no male effect was found on the size of the offspring yolk reserves, yolk volume was higher in offspring from polyandrous matings than offspring of the either of the two males when mated monandrously. Conclusions In support of the "good sperm hypothesis, we found that sperm velocity was positively associated with offspring fitness. In addition, our results suggest that polyandrous females gain genetic advantage (higher offspring survival) from this behavior, but that some benefits of polyandry (larger yolk volume) may not be explained solely by the additive genetic effects. This suggests that sperm competition environment may intensify the selection on genetically superior sperm which in turn may produce offspring that have superior yolk reserves. However, as high sperm velocity was not associated with larger yolk volume, it is possible that also some other non-genetic effects may contribute to offspring fitness. The potential role of polyandrous mating in inbreeding avoidance is discussed. |
format |
Article in Journal/Newspaper |
author |
Peuhkuri Nina Figenschou Lars Janhunen Matti Rudolfsen Geir Kekäläinen Jukka Tamper Niina Kortet Raine |
author_facet |
Peuhkuri Nina Figenschou Lars Janhunen Matti Rudolfsen Geir Kekäläinen Jukka Tamper Niina Kortet Raine |
author_sort |
Peuhkuri Nina |
title |
Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system |
title_short |
Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system |
title_full |
Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system |
title_fullStr |
Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system |
title_full_unstemmed |
Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system |
title_sort |
genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system |
publisher |
BMC |
publishDate |
2010 |
url |
https://doi.org/10.1186/1471-2148-10-20 https://doaj.org/article/3c80fd7475a345efac08d3d312f4803e |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
BMC Evolutionary Biology, Vol 10, Iss 1, p 20 (2010) |
op_relation |
http://www.biomedcentral.com/1471-2148/10/20 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-10-20 1471-2148 https://doaj.org/article/3c80fd7475a345efac08d3d312f4803e |
op_doi |
https://doi.org/10.1186/1471-2148-10-20 |
container_title |
BMC Evolutionary Biology |
container_volume |
10 |
container_issue |
1 |
container_start_page |
20 |
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1766304091148910592 |