Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock
Published version. Source at http://doi.org/10.1093/icesjms/fsv177 . Year-class strength of Barents Sea capelin has been monitored closely since the early 1970s and during this ∼45 years period three short periods of almost total recruitment failure leading to three stock collapses have been observe...
Published in: | ICES Journal of Marine Science: Journal du Conseil |
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Language: | English |
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Oxford University Press
2015
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Online Access: | https://hdl.handle.net/10037/8625 https://doi.org/10.1093/icesjms/fsv177 |
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ftunivtroemsoe:oai:munin.uit.no:10037/8625 2023-05-15T15:38:40+02:00 Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock Gjøsæter, Harald Hallfredsson, Elvar H. Mikkelsen, Nina Bogstad, Bjarte Pedersen, Torstein 2015-10-11 https://hdl.handle.net/10037/8625 https://doi.org/10.1093/icesjms/fsv177 eng eng Oxford University Press ICES Journal of Marine Science 2015 FRIDAID 1289427 doi:10.1093/icesjms/fsv177 1095-9289 https://hdl.handle.net/10037/8625 URN:NBN:no-uit_munin_8171 openAccess Barents Sea capelin mortality predation recruitment 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 Journal article Tidsskriftartikkel Peer reviewed 2015 ftunivtroemsoe https://doi.org/10.1093/icesjms/fsv177 2021-06-25T17:54:32Z Published version. Source at http://doi.org/10.1093/icesjms/fsv177 . Year-class strength of Barents Sea capelin has been monitored closely since the early 1970s and during this ∼45 years period three short periods of almost total recruitment failure leading to three stock collapses have been observed. These events triggered much attention since there was a large commercial fishery for capelin, but also because of observed ecosystem effects attributed to the first of these collapse events. This attention motivated research to clarify mechanisms behind the recruitment failures, and many papers have been published regarding the causes of these events. Here, we review this literature and try to put the various investigations into context. Most of the research conducted gives evidence in favour of a hypothesis that was formulated after the first recruitment failure event in the mid-1980s that predation on capelin larvae was the main cause of recruitment failure. Most studies also support the hypothesis that young herring (Clupea harengus) was the main predator on capelin larvae, but other predators like young-of-the-year cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) probably also played a role. Investigations of the effect of predators such as haddock, red king crab (Paralithodes camtschaticus), diving birds, and capelin on the demersal capelin eggs have also been reviewed. Usually, these predators are found to consume capelin eggs, but most likely not to an extent that would affect the recruitment to a noticeable degree. It is concluded that the predation on capelin larvae is the main reason for the observed recruitment failures, although predation from the predators reviewed here can hardly be the only reason for almost total recruitment failures observed in some periods. Article in Journal/Newspaper Barents Sea Gadus morhua Paralithodes camtschaticus Red king crab University of Tromsø: Munin Open Research Archive Barents Sea ICES Journal of Marine Science: Journal du Conseil 73 2 182 195 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
Barents Sea capelin mortality predation recruitment 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 |
spellingShingle |
Barents Sea capelin mortality predation recruitment 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 Gjøsæter, Harald Hallfredsson, Elvar H. Mikkelsen, Nina Bogstad, Bjarte Pedersen, Torstein Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock |
topic_facet |
Barents Sea capelin mortality predation recruitment 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 |
description |
Published version. Source at http://doi.org/10.1093/icesjms/fsv177 . Year-class strength of Barents Sea capelin has been monitored closely since the early 1970s and during this ∼45 years period three short periods of almost total recruitment failure leading to three stock collapses have been observed. These events triggered much attention since there was a large commercial fishery for capelin, but also because of observed ecosystem effects attributed to the first of these collapse events. This attention motivated research to clarify mechanisms behind the recruitment failures, and many papers have been published regarding the causes of these events. Here, we review this literature and try to put the various investigations into context. Most of the research conducted gives evidence in favour of a hypothesis that was formulated after the first recruitment failure event in the mid-1980s that predation on capelin larvae was the main cause of recruitment failure. Most studies also support the hypothesis that young herring (Clupea harengus) was the main predator on capelin larvae, but other predators like young-of-the-year cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) probably also played a role. Investigations of the effect of predators such as haddock, red king crab (Paralithodes camtschaticus), diving birds, and capelin on the demersal capelin eggs have also been reviewed. Usually, these predators are found to consume capelin eggs, but most likely not to an extent that would affect the recruitment to a noticeable degree. It is concluded that the predation on capelin larvae is the main reason for the observed recruitment failures, although predation from the predators reviewed here can hardly be the only reason for almost total recruitment failures observed in some periods. |
format |
Article in Journal/Newspaper |
author |
Gjøsæter, Harald Hallfredsson, Elvar H. Mikkelsen, Nina Bogstad, Bjarte Pedersen, Torstein |
author_facet |
Gjøsæter, Harald Hallfredsson, Elvar H. Mikkelsen, Nina Bogstad, Bjarte Pedersen, Torstein |
author_sort |
Gjøsæter, Harald |
title |
Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock |
title_short |
Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock |
title_full |
Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock |
title_fullStr |
Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock |
title_full_unstemmed |
Predation on early life stages is decisive for year-class strength in the Barents Sea capelin (Mallotus villosus) stock |
title_sort |
predation on early life stages is decisive for year-class strength in the barents sea capelin (mallotus villosus) stock |
publisher |
Oxford University Press |
publishDate |
2015 |
url |
https://hdl.handle.net/10037/8625 https://doi.org/10.1093/icesjms/fsv177 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Gadus morhua Paralithodes camtschaticus Red king crab |
genre_facet |
Barents Sea Gadus morhua Paralithodes camtschaticus Red king crab |
op_relation |
ICES Journal of Marine Science 2015 FRIDAID 1289427 doi:10.1093/icesjms/fsv177 1095-9289 https://hdl.handle.net/10037/8625 URN:NBN:no-uit_munin_8171 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1093/icesjms/fsv177 |
container_title |
ICES Journal of Marine Science: Journal du Conseil |
container_volume |
73 |
container_issue |
2 |
container_start_page |
182 |
op_container_end_page |
195 |
_version_ |
1766369870650277888 |