Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus)
From video recordings of spawning events, we quantified protective and cannibalistic behavior of Arctic charr occurring immediately after spawning. The number of fish cannibalizing on stray eggs was examined regarding (a) whether more than one male shed milt during the spawning event, that is, wheth...
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Online Access: | https://hdl.handle.net/10037/23608 https://doi.org/10.1002/ece3.8173 |
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ftunivtroemsoe:oai:munin.uit.no:10037/23608 2023-05-15T14:30:06+02:00 Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus) Frye, Marilena Egeland, Torvald Blikra Nordeide, Jarle Tryti Folstad, Ivar 2021-09-28 https://hdl.handle.net/10037/23608 https://doi.org/10.1002/ece3.8173 eng eng Wiley Ecology and Evolution FRIDAID 1939806 doi:10.1002/ece3.8173 2045-7758 https://hdl.handle.net/10037/23608 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1002/ece3.8173 2022-01-12T23:56:33Z From video recordings of spawning events, we quantified protective and cannibalistic behavior of Arctic charr occurring immediately after spawning. The number of fish cannibalizing on stray eggs was examined regarding (a) whether more than one male shed milt during the spawning event, that is, whether sperm competition occurred, (b) whether the sperm competition included few or many males, that is, the intensity of sperm competition, and (c) the density of fish at the spawning site. Response behavior toward egg cannibalism was also examined among females and dominant males in order to determine any parental investment toward protecting the eggs after spawning. Cannibalistic behavior was seen in almost 50% of the spawnings, and the multiple spawning events showed the highest numbers of fish cannibalizing on eggs. Both the number of males releasing milt and the number of fish approaching the spawning site were positively correlated with egg cannibalism. Sperm competition was, however, not a prerequisite for egg cannibalism. Although we also observed partial filial cannibalism, protective behavior of eggs was seen both among dominant males and females, suggesting that charr actually conduct parental care. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus University of Tromsø: Munin Open Research Archive Arctic Ecology and Evolution 11 21 14383 14391 |
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::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 Frye, Marilena Egeland, Torvald Blikra Nordeide, Jarle Tryti Folstad, Ivar Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus) |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 |
description |
From video recordings of spawning events, we quantified protective and cannibalistic behavior of Arctic charr occurring immediately after spawning. The number of fish cannibalizing on stray eggs was examined regarding (a) whether more than one male shed milt during the spawning event, that is, whether sperm competition occurred, (b) whether the sperm competition included few or many males, that is, the intensity of sperm competition, and (c) the density of fish at the spawning site. Response behavior toward egg cannibalism was also examined among females and dominant males in order to determine any parental investment toward protecting the eggs after spawning. Cannibalistic behavior was seen in almost 50% of the spawnings, and the multiple spawning events showed the highest numbers of fish cannibalizing on eggs. Both the number of males releasing milt and the number of fish approaching the spawning site were positively correlated with egg cannibalism. Sperm competition was, however, not a prerequisite for egg cannibalism. Although we also observed partial filial cannibalism, protective behavior of eggs was seen both among dominant males and females, suggesting that charr actually conduct parental care. |
format |
Article in Journal/Newspaper |
author |
Frye, Marilena Egeland, Torvald Blikra Nordeide, Jarle Tryti Folstad, Ivar |
author_facet |
Frye, Marilena Egeland, Torvald Blikra Nordeide, Jarle Tryti Folstad, Ivar |
author_sort |
Frye, Marilena |
title |
Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus) |
title_short |
Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus) |
title_full |
Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus) |
title_fullStr |
Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus) |
title_full_unstemmed |
Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus) |
title_sort |
cannibalism and protective behavior of eggs in arctic charr (salvelinus alpinus) |
publisher |
Wiley |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/23608 https://doi.org/10.1002/ece3.8173 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
Ecology and Evolution FRIDAID 1939806 doi:10.1002/ece3.8173 2045-7758 https://hdl.handle.net/10037/23608 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1002/ece3.8173 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
21 |
container_start_page |
14383 |
op_container_end_page |
14391 |
_version_ |
1766304016245981184 |