Status specific tailoring of sperm behavior in an external fertilizer
Published version. Source at https://doi.org/10.3389/fevo.2016.00135 Why dominant males experiencing intense sperm competition sometimes show low investments in sperm production is not always obvious. One well-documented example is that of the external fertilizing teleost, the Arctic charr (Salvelin...
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Online Access: | https://hdl.handle.net/10037/10631 https://doi.org/10.3389/fevo.2016.00135 |
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ftunivtroemsoe:oai:munin.uit.no:10037/10631 2023-05-15T14:30:07+02:00 Status specific tailoring of sperm behavior in an external fertilizer Egeland, Torvald Blikra Rudolfsen, Geir Nordeide, Jarle Tryti Folstad, Ivar 2016-11-24 https://hdl.handle.net/10037/10631 https://doi.org/10.3389/fevo.2016.00135 eng eng Frontiers Media Frontiers in Ecology and Evolution Egeland T, Rudolfsen G, Nordeide JT, Folstad I. Status specific tailoring of sperm behavior in an external fertilizer. Frontiers in Ecology and Evolution. 2016;4(135) FRIDAID 1400268 doi:10.3389/fevo.2016.00135 2296-701X https://hdl.handle.net/10037/10631 openAccess VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural science: 400::Zoology and botany: 480 sexual selection cryptic female choice sperm competition sperm selection sperm velocity ovarian fluid Journal article Tidsskriftartikkel Peer reviewed 2016 ftunivtroemsoe https://doi.org/10.3389/fevo.2016.00135 2021-06-25T17:55:03Z Published version. Source at https://doi.org/10.3389/fevo.2016.00135 Why dominant males experiencing intense sperm competition sometimes show low investments in sperm production is not always obvious. One well-documented example is that of the external fertilizing teleost, the Arctic charr (Salvelinus alpinus), where individuals becoming dominant reduce sperm production and sperm swimming speed in water compared to subordinates. Here, we report how ovarian fluid differentially influences sperm velocity of dominant and subordinate male Arctic charr. That is, sperm from dominant males increase their velocity in water diluted ovarian fluid compared to that observed in water, while sperm from subordinates, on the other hand, decrease velocity in ovarian fluid compared to that observed in water. Thus, subordinates, who invest more resources in their sperm and usually show the highest sperm velocity in water, have lower gains from their investment than dominant males when sperm are swimming in ovarian fluid. In sum, our result suggests that ovarian fluid increase sperm velocity more in dominant males than in subordinate males. Although this finding could partly be caused by cryptic female choice exerted by the ovarian fluid for sperm from dominant males, an alternative and more parsimonious explanation is that sperm from dominant males may simply be better designed for swimming in ovarian fluid compared to sperm from subordinate males. Thus, sperm production in the two reproductive roles seems to be adaptively tailored to different external environments. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus University of Tromsø: Munin Open Research Archive Arctic Frontiers in Ecology and Evolution 4 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural science: 400::Zoology and botany: 480 sexual selection cryptic female choice sperm competition sperm selection sperm velocity ovarian fluid |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural science: 400::Zoology and botany: 480 sexual selection cryptic female choice sperm competition sperm selection sperm velocity ovarian fluid Egeland, Torvald Blikra Rudolfsen, Geir Nordeide, Jarle Tryti Folstad, Ivar Status specific tailoring of sperm behavior in an external fertilizer |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural science: 400::Zoology and botany: 480 sexual selection cryptic female choice sperm competition sperm selection sperm velocity ovarian fluid |
description |
Published version. Source at https://doi.org/10.3389/fevo.2016.00135 Why dominant males experiencing intense sperm competition sometimes show low investments in sperm production is not always obvious. One well-documented example is that of the external fertilizing teleost, the Arctic charr (Salvelinus alpinus), where individuals becoming dominant reduce sperm production and sperm swimming speed in water compared to subordinates. Here, we report how ovarian fluid differentially influences sperm velocity of dominant and subordinate male Arctic charr. That is, sperm from dominant males increase their velocity in water diluted ovarian fluid compared to that observed in water, while sperm from subordinates, on the other hand, decrease velocity in ovarian fluid compared to that observed in water. Thus, subordinates, who invest more resources in their sperm and usually show the highest sperm velocity in water, have lower gains from their investment than dominant males when sperm are swimming in ovarian fluid. In sum, our result suggests that ovarian fluid increase sperm velocity more in dominant males than in subordinate males. Although this finding could partly be caused by cryptic female choice exerted by the ovarian fluid for sperm from dominant males, an alternative and more parsimonious explanation is that sperm from dominant males may simply be better designed for swimming in ovarian fluid compared to sperm from subordinate males. Thus, sperm production in the two reproductive roles seems to be adaptively tailored to different external environments. |
format |
Article in Journal/Newspaper |
author |
Egeland, Torvald Blikra Rudolfsen, Geir Nordeide, Jarle Tryti Folstad, Ivar |
author_facet |
Egeland, Torvald Blikra Rudolfsen, Geir Nordeide, Jarle Tryti Folstad, Ivar |
author_sort |
Egeland, Torvald Blikra |
title |
Status specific tailoring of sperm behavior in an external fertilizer |
title_short |
Status specific tailoring of sperm behavior in an external fertilizer |
title_full |
Status specific tailoring of sperm behavior in an external fertilizer |
title_fullStr |
Status specific tailoring of sperm behavior in an external fertilizer |
title_full_unstemmed |
Status specific tailoring of sperm behavior in an external fertilizer |
title_sort |
status specific tailoring of sperm behavior in an external fertilizer |
publisher |
Frontiers Media |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/10631 https://doi.org/10.3389/fevo.2016.00135 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
Frontiers in Ecology and Evolution Egeland T, Rudolfsen G, Nordeide JT, Folstad I. Status specific tailoring of sperm behavior in an external fertilizer. Frontiers in Ecology and Evolution. 2016;4(135) FRIDAID 1400268 doi:10.3389/fevo.2016.00135 2296-701X https://hdl.handle.net/10037/10631 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3389/fevo.2016.00135 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
4 |
_version_ |
1766304030567432192 |