Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males
A mismatch in timing between the release of male and female gametes in external fertilizers may lead to failed fertilization or, under sperm competition, reduced paternity. To quantify the actual synchrony of gamete release and the level of sperm competition we placed video cameras on two spawning g...
Published in: | Behaviour |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Brill Academic Publishers
2011
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Online Access: | https://hdl.handle.net/10037/4055 https://doi.org/10.1163/000579511X596615 |
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ftunivtroemsoe:oai:munin.uit.no:10037/4055 2023-05-15T14:30:06+02:00 Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males Sørum, Vidar Figenschou, Lars Rudolfsen, Geir Folstad, Ivar 2011 https://hdl.handle.net/10037/4055 https://doi.org/10.1163/000579511X596615 eng eng Brill Academic Publishers Behaviour 148(2011) nr. 9-10 s. 1157-1172 FRIDAID 872576 doi:10.1163/000579511X596615 0005-7959 https://hdl.handle.net/10037/4055 URN:NBN:no-uit_munin_3775 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Etologi: 485 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 Journal article Tidsskriftartikkel Peer reviewed 2011 ftunivtroemsoe https://doi.org/10.1163/000579511X596615 2021-06-25T17:53:15Z A mismatch in timing between the release of male and female gametes in external fertilizers may lead to failed fertilization or, under sperm competition, reduced paternity. To quantify the actual synchrony of gamete release and the level of sperm competition we placed video cameras on two spawning grounds of a naturally spawning population of Arctic charr ( Salvelinus alpinus). Females release eggs in response to courting (quivering) in less than 1% of the cases, yet to both dominant and sneaker males. That is, females initiated spawning with dominant males in 73.3% of the recorded spawning events. Although the actual spawning seems to be largely under female control, 55.6% of spawning events occur under sperm competition. The average time delay between dominant and sneaker males milt release under sperm competition is 0.68 s. Thus, female reproductive decisions seem to be strongly influenced by male-male competition and this may have set the stage for the evolution and maintenance of the observed plasticity in ejaculate characteristics of male charr. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus University of Tromsø: Munin Open Research Archive Arctic Behaviour 148 9-10 1157 1172 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Etologi: 485 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Etologi: 485 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 Sørum, Vidar Figenschou, Lars Rudolfsen, Geir Folstad, Ivar Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Etologi: 485 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 |
description |
A mismatch in timing between the release of male and female gametes in external fertilizers may lead to failed fertilization or, under sperm competition, reduced paternity. To quantify the actual synchrony of gamete release and the level of sperm competition we placed video cameras on two spawning grounds of a naturally spawning population of Arctic charr ( Salvelinus alpinus). Females release eggs in response to courting (quivering) in less than 1% of the cases, yet to both dominant and sneaker males. That is, females initiated spawning with dominant males in 73.3% of the recorded spawning events. Although the actual spawning seems to be largely under female control, 55.6% of spawning events occur under sperm competition. The average time delay between dominant and sneaker males milt release under sperm competition is 0.68 s. Thus, female reproductive decisions seem to be strongly influenced by male-male competition and this may have set the stage for the evolution and maintenance of the observed plasticity in ejaculate characteristics of male charr. |
format |
Article in Journal/Newspaper |
author |
Sørum, Vidar Figenschou, Lars Rudolfsen, Geir Folstad, Ivar |
author_facet |
Sørum, Vidar Figenschou, Lars Rudolfsen, Geir Folstad, Ivar |
author_sort |
Sørum, Vidar |
title |
Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males |
title_short |
Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males |
title_full |
Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males |
title_fullStr |
Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males |
title_full_unstemmed |
Spawning behaviour of Arctic charr (Salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males |
title_sort |
spawning behaviour of arctic charr (salvelinus alpinus) : risk of sperm competition and timing of milt release for sneaker and dominant males |
publisher |
Brill Academic Publishers |
publishDate |
2011 |
url |
https://hdl.handle.net/10037/4055 https://doi.org/10.1163/000579511X596615 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
Behaviour 148(2011) nr. 9-10 s. 1157-1172 FRIDAID 872576 doi:10.1163/000579511X596615 0005-7959 https://hdl.handle.net/10037/4055 URN:NBN:no-uit_munin_3775 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1163/000579511X596615 |
container_title |
Behaviour |
container_volume |
148 |
container_issue |
9-10 |
container_start_page |
1157 |
op_container_end_page |
1172 |
_version_ |
1766304017839816704 |