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...
Published in: | Royal Society Open Science |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
The Royal Society
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/2474239 https://doi.org/10.1098/rsos.150709 |
id |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2474239 |
---|---|
record_format |
openpolar |
spelling |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2474239 2023-05-15T15:32:41+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 http://hdl.handle.net/11250/2474239 https://doi.org/10.1098/rsos.150709 eng eng The Royal Society Norges forskningsråd: 223257 Royal Society Open Science. 2016, 3 . urn:issn:2054-5703 http://hdl.handle.net/11250/2474239 https://doi.org/10.1098/rsos.150709 cristin:1366514 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 12 3 Royal Society Open Science Journal article Peer reviewed 2016 ftntnutrondheimi https://doi.org/10.1098/rsos.150709 2019-09-17T06:53:28Z 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 fertilizing and polyandrous Atlantic salmon (Salmo salar), we employed split-clutch and split-ejaculate in vitro fertilization experiments to generate offspring using designs that either denied or applied opportunities for sperm competition and cryptic female choice. Following fertilizations, 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 fertilized 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 fertilized 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 fertilization conditions provide opportunities for sperm competition and cryptic female choice. publishedVersion © 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Royal Society Open Science 3 3 150709 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
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 fertilizing and polyandrous Atlantic salmon (Salmo salar), we employed split-clutch and split-ejaculate in vitro fertilization experiments to generate offspring using designs that either denied or applied opportunities for sperm competition and cryptic female choice. Following fertilizations, 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 fertilized 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 fertilized 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 fertilization conditions provide opportunities for sperm competition and cryptic female choice. publishedVersion © 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
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 |
publisher |
The Royal Society |
publishDate |
2016 |
url |
http://hdl.handle.net/11250/2474239 https://doi.org/10.1098/rsos.150709 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
12 3 Royal Society Open Science |
op_relation |
Norges forskningsråd: 223257 Royal Society Open Science. 2016, 3 . urn:issn:2054-5703 http://hdl.handle.net/11250/2474239 https://doi.org/10.1098/rsos.150709 cristin:1366514 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
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 |
_version_ |
1766363181725253632 |