Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators
We experimentally show that the piscivorous top predator Arctic char (Salvelinus alpinus) have higher attack rates on cannibal prey compared to the interspecific prey species ninespine stickleback (Pungitius pungitius), and that sticklebacks are more efficient competitiors for zooplankton resources...
Published in: | PLoS ONE |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2013
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37993 https://doi.org/10.1371/journal.pone.0070404 |
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ftumeauniv:oai:DiVA.org:umu-37993 2023-10-09T21:48:37+02:00 Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators Byström, Pär Ask, Per Andersson, Jens Persson, Lennart 2013 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37993 https://doi.org/10.1371/journal.pone.0070404 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap PLOS ONE, 2013, 8:7, s. e70404- http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37993 doi:10.1371/journal.pone.0070404 PMID 23894650 ISI:000322391400088 Scopus 2-s2.0-84880477033 info:eu-repo/semantics/openAccess Cannibalism piscivory competition Arctic char ninespine stickleback Ecology Ekologi Article in journal info:eu-repo/semantics/article text 2013 ftumeauniv https://doi.org/10.1371/journal.pone.0070404 2023-09-22T13:58:30Z We experimentally show that the piscivorous top predator Arctic char (Salvelinus alpinus) have higher attack rates on cannibal prey compared to the interspecific prey species ninespine stickleback (Pungitius pungitius), and that sticklebacks are more efficient competitiors for zooplankton resources compared to juvenile char. We also conducted a literature survey that together with our experiments showed that piscivorous top consumers selected cannibal prey over interspecific prey in 9 out of 10 cases. Our literature survey also showed that specialist prey species are competitively superior compared to juvenile piscivorous species within the zooplankton niche. We discuss our results in relation to omnivory in fish communities and we suggest that the observed general preference for cannibal prey over interspecific prey in piscivores and the competitive advantage of prey species over juvenile piscivores may be major mechanisms for coexistence in fish communities. Article in Journal/Newspaper Arctic Salvelinus alpinus Zooplankton Umeå University: Publications (DiVA) Arctic PLoS ONE 8 7 e70404 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Cannibalism piscivory competition Arctic char ninespine stickleback Ecology Ekologi |
spellingShingle |
Cannibalism piscivory competition Arctic char ninespine stickleback Ecology Ekologi Byström, Pär Ask, Per Andersson, Jens Persson, Lennart Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators |
topic_facet |
Cannibalism piscivory competition Arctic char ninespine stickleback Ecology Ekologi |
description |
We experimentally show that the piscivorous top predator Arctic char (Salvelinus alpinus) have higher attack rates on cannibal prey compared to the interspecific prey species ninespine stickleback (Pungitius pungitius), and that sticklebacks are more efficient competitiors for zooplankton resources compared to juvenile char. We also conducted a literature survey that together with our experiments showed that piscivorous top consumers selected cannibal prey over interspecific prey in 9 out of 10 cases. Our literature survey also showed that specialist prey species are competitively superior compared to juvenile piscivorous species within the zooplankton niche. We discuss our results in relation to omnivory in fish communities and we suggest that the observed general preference for cannibal prey over interspecific prey in piscivores and the competitive advantage of prey species over juvenile piscivores may be major mechanisms for coexistence in fish communities. |
format |
Article in Journal/Newspaper |
author |
Byström, Pär Ask, Per Andersson, Jens Persson, Lennart |
author_facet |
Byström, Pär Ask, Per Andersson, Jens Persson, Lennart |
author_sort |
Byström, Pär |
title |
Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators |
title_short |
Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators |
title_full |
Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators |
title_fullStr |
Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators |
title_full_unstemmed |
Preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators |
title_sort |
preference for cannibalism and ontogenetic constraints in competitive ability of piscivorous top predators |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2013 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37993 https://doi.org/10.1371/journal.pone.0070404 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Salvelinus alpinus Zooplankton |
genre_facet |
Arctic Salvelinus alpinus Zooplankton |
op_relation |
PLOS ONE, 2013, 8:7, s. e70404- http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37993 doi:10.1371/journal.pone.0070404 PMID 23894650 ISI:000322391400088 Scopus 2-s2.0-84880477033 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0070404 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
7 |
container_start_page |
e70404 |
_version_ |
1779311692451151872 |