Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon
There is increasing evidence that females can somehow improve their offspring fitness by mating with multiple males, but we understand little about the exact stage(s) at which such benefits are gained. Here, we measure whether offspring fitness is influenced by mechanisms operating solely between sp...
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2016
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/57766/ https://ueaeprints.uea.ac.uk/id/eprint/57766/4/RS_OpenScience_150709.pdf https://doi.org/10.1098/rsos.150709 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:57766 2023-05-15T15:32:35+02:00 Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon Lumley, Alyson J. Diamond, Sian E. Einum, Sigurd Yeates, Sarah E. Peruffo, Danielle Emerson, Brent C. Gage, Matthew J. G. 2016-03 application/pdf https://ueaeprints.uea.ac.uk/id/eprint/57766/ https://ueaeprints.uea.ac.uk/id/eprint/57766/4/RS_OpenScience_150709.pdf https://doi.org/10.1098/rsos.150709 en eng https://ueaeprints.uea.ac.uk/id/eprint/57766/4/RS_OpenScience_150709.pdf Lumley, Alyson J., Diamond, Sian E., Einum, Sigurd, Yeates, Sarah E., Peruffo, Danielle, Emerson, Brent C. and Gage, Matthew J. G. (2016) Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon. Royal Society Open Science, 3 (3). doi:10.1098/rsos.150709 cc_by CC-BY Article PeerReviewed 2016 ftuniveastangl https://doi.org/10.1098/rsos.150709 2023-03-02T23:31:40Z There is increasing evidence that females can somehow improve their offspring fitness by mating with multiple males, but we understand little about the exact stage(s) at which such benefits are gained. Here, we measure whether offspring fitness is influenced by mechanisms operating solely between sperm and egg. Using externally-fertilising and polyandrous Atlantic salmon (Salmo salar), we employed split-clutch and split-ejaculate in vitro fertilisation experiments to generate offspring using designs that either denied or applied opportunities for sperm competition and cryptic female choice. Following fertilisations, we measured 140 days of offspring fitness after hatch, through growth and survival in hatchery and near-natural conditions. Despite an average composite mortality of 61%, offspring fitness at every life stage was near-identical between groups fertilised under the absence versus presence of opportunities for sperm competition and cryptic female choice. Of the 21,551 and 21,771 eggs from 24 females fertilised under monandrous versus polyandrous conditions, 68% versus 67.8% survived to the 100-day juvenile stage; sub-samples showed similar hatching success (73.1% versus 74.3%), had similar survival over 40 days in near-natural streams (57.3% versus 56.2%), and grew at similar rates throughout. We therefore found no evidence that gamete-specific interactions allow offspring fitness benefits when polyandrous fertilisation conditions provide opportunities for sperm competition and cryptic female choice. Article in Journal/Newspaper Atlantic salmon Salmo salar University of East Anglia: UEA Digital Repository Royal Society Open Science 3 3 150709 |
institution |
Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
English |
description |
There is increasing evidence that females can somehow improve their offspring fitness by mating with multiple males, but we understand little about the exact stage(s) at which such benefits are gained. Here, we measure whether offspring fitness is influenced by mechanisms operating solely between sperm and egg. Using externally-fertilising and polyandrous Atlantic salmon (Salmo salar), we employed split-clutch and split-ejaculate in vitro fertilisation experiments to generate offspring using designs that either denied or applied opportunities for sperm competition and cryptic female choice. Following fertilisations, we measured 140 days of offspring fitness after hatch, through growth and survival in hatchery and near-natural conditions. Despite an average composite mortality of 61%, offspring fitness at every life stage was near-identical between groups fertilised under the absence versus presence of opportunities for sperm competition and cryptic female choice. Of the 21,551 and 21,771 eggs from 24 females fertilised under monandrous versus polyandrous conditions, 68% versus 67.8% survived to the 100-day juvenile stage; sub-samples showed similar hatching success (73.1% versus 74.3%), had similar survival over 40 days in near-natural streams (57.3% versus 56.2%), and grew at similar rates throughout. We therefore found no evidence that gamete-specific interactions allow offspring fitness benefits when polyandrous fertilisation conditions provide opportunities for sperm competition and cryptic female choice. |
format |
Article in Journal/Newspaper |
author |
Lumley, Alyson J. Diamond, Sian E. Einum, Sigurd Yeates, Sarah E. Peruffo, Danielle Emerson, Brent C. Gage, Matthew J. G. |
spellingShingle |
Lumley, Alyson J. Diamond, Sian E. Einum, Sigurd Yeates, Sarah E. Peruffo, Danielle Emerson, Brent C. Gage, Matthew J. G. Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon |
author_facet |
Lumley, Alyson J. Diamond, Sian E. Einum, Sigurd Yeates, Sarah E. Peruffo, Danielle Emerson, Brent C. Gage, Matthew J. G. |
author_sort |
Lumley, Alyson J. |
title |
Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon |
title_short |
Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon |
title_full |
Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon |
title_fullStr |
Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon |
title_full_unstemmed |
Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon |
title_sort |
post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon |
publishDate |
2016 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/57766/ https://ueaeprints.uea.ac.uk/id/eprint/57766/4/RS_OpenScience_150709.pdf https://doi.org/10.1098/rsos.150709 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
https://ueaeprints.uea.ac.uk/id/eprint/57766/4/RS_OpenScience_150709.pdf Lumley, Alyson J., Diamond, Sian E., Einum, Sigurd, Yeates, Sarah E., Peruffo, Danielle, Emerson, Brent C. and Gage, Matthew J. G. (2016) Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon. Royal Society Open Science, 3 (3). doi:10.1098/rsos.150709 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rsos.150709 |
container_title |
Royal Society Open Science |
container_volume |
3 |
container_issue |
3 |
container_start_page |
150709 |
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1766363081690054656 |