First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey
Mackerel (Scomber scombrus) is one of the ecologically and economically most important fish species in the Atlantic. Its recruitment has, for unknown reasons, been exceptional from 1998 to 2012. The majority (75%) of the survivors in the first winter were found north of an oceanographic division at...
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Online Access: | https://orbit.dtu.dk/en/publications/345bf874-281f-45c3-a2ef-ef65ff81fa23 https://doi.org/10.1111/fog.12165 |
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ftdtupubl:oai:pure.atira.dk:publications/345bf874-281f-45c3-a2ef-ef65ff81fa23 2023-05-15T17:38:22+02:00 First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey Jansen, Teunis 2016 https://orbit.dtu.dk/en/publications/345bf874-281f-45c3-a2ef-ef65ff81fa23 https://doi.org/10.1111/fog.12165 eng eng info:eu-repo/semantics/closedAccess Jansen , T 2016 , ' First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey ' , Fisheries Oceanography , vol. 25 , no. 4 , pp. 457-469 . https://doi.org/10.1111/fog.12165 Aquatic Science Oceanography Calanus continuous plankton recorder copepodites distribution food forecast general additive models geostatistics growth- mackerel larvae mortality North East Atlantic recruitment Scomber scombrus spawning stock biomass stage-duration stock size survival temperature turbulence Acartia Branchiopoda Calanoida Copepoda Echinodermata article 2016 ftdtupubl https://doi.org/10.1111/fog.12165 2023-01-12T00:05:38Z Mackerel (Scomber scombrus) is one of the ecologically and economically most important fish species in the Atlantic. Its recruitment has, for unknown reasons, been exceptional from 1998 to 2012. The majority (75%) of the survivors in the first winter were found north of an oceanographic division at approximately 52°N, despite the fact that mackerel spawns over a wide range of latitudes. Multivariate time series modelling of survivor abundance in the north revealed a significant correlation with the abundance of copepodites (stage I–IV) of Calanus sp. in the spawning season (April to June). The copepodites were a mix of C. helgolandicus (dominating) and C. finmarchicus. The growth of mackerel larvae is known to be positively related to the availability of nauplii and copopodites of preferred prey species, namely, large calanoid copepod species such as Calanus. The statistical relationship between mackerel survivors and abundance of Calanus, therefore, most likely, reflected a causal relationship: high availability of Calanus probably reduced starvation, stage-specific predation and cannibalism (owing to prey switching). The effects of other abundant, but less preferred zooplankton taxa, (Acartia sp., Branchiopoda spp. and Echinodermata spp. larvae), as well as stock size, temperature and wind-induced turbulence were not found to be significant. However, stock size was retained in the final model because of a significant interaction with Calanus in oceanic areas west of the North European continental shelf. This was suggested to be a consequence of a density driven expansion of the spawning area that increased the overlap between early life stages of mackerel and food (Calanus) in new areas. Article in Journal/Newspaper North East Atlantic Technical University of Denmark: DTU Orbit Fisheries Oceanography 25 4 457 469 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Aquatic Science Oceanography Calanus continuous plankton recorder copepodites distribution food forecast general additive models geostatistics growth- mackerel larvae mortality North East Atlantic recruitment Scomber scombrus spawning stock biomass stage-duration stock size survival temperature turbulence Acartia Branchiopoda Calanoida Copepoda Echinodermata |
spellingShingle |
Aquatic Science Oceanography Calanus continuous plankton recorder copepodites distribution food forecast general additive models geostatistics growth- mackerel larvae mortality North East Atlantic recruitment Scomber scombrus spawning stock biomass stage-duration stock size survival temperature turbulence Acartia Branchiopoda Calanoida Copepoda Echinodermata Jansen, Teunis First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey |
topic_facet |
Aquatic Science Oceanography Calanus continuous plankton recorder copepodites distribution food forecast general additive models geostatistics growth- mackerel larvae mortality North East Atlantic recruitment Scomber scombrus spawning stock biomass stage-duration stock size survival temperature turbulence Acartia Branchiopoda Calanoida Copepoda Echinodermata |
description |
Mackerel (Scomber scombrus) is one of the ecologically and economically most important fish species in the Atlantic. Its recruitment has, for unknown reasons, been exceptional from 1998 to 2012. The majority (75%) of the survivors in the first winter were found north of an oceanographic division at approximately 52°N, despite the fact that mackerel spawns over a wide range of latitudes. Multivariate time series modelling of survivor abundance in the north revealed a significant correlation with the abundance of copepodites (stage I–IV) of Calanus sp. in the spawning season (April to June). The copepodites were a mix of C. helgolandicus (dominating) and C. finmarchicus. The growth of mackerel larvae is known to be positively related to the availability of nauplii and copopodites of preferred prey species, namely, large calanoid copepod species such as Calanus. The statistical relationship between mackerel survivors and abundance of Calanus, therefore, most likely, reflected a causal relationship: high availability of Calanus probably reduced starvation, stage-specific predation and cannibalism (owing to prey switching). The effects of other abundant, but less preferred zooplankton taxa, (Acartia sp., Branchiopoda spp. and Echinodermata spp. larvae), as well as stock size, temperature and wind-induced turbulence were not found to be significant. However, stock size was retained in the final model because of a significant interaction with Calanus in oceanic areas west of the North European continental shelf. This was suggested to be a consequence of a density driven expansion of the spawning area that increased the overlap between early life stages of mackerel and food (Calanus) in new areas. |
format |
Article in Journal/Newspaper |
author |
Jansen, Teunis |
author_facet |
Jansen, Teunis |
author_sort |
Jansen, Teunis |
title |
First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey |
title_short |
First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey |
title_full |
First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey |
title_fullStr |
First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey |
title_full_unstemmed |
First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey |
title_sort |
first-year survival of north east atlantic mackerel (scomber scombrus) from 1998 to 2012 appears to be driven by availability of calanus, a preferred copepod prey |
publishDate |
2016 |
url |
https://orbit.dtu.dk/en/publications/345bf874-281f-45c3-a2ef-ef65ff81fa23 https://doi.org/10.1111/fog.12165 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Jansen , T 2016 , ' First-year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey ' , Fisheries Oceanography , vol. 25 , no. 4 , pp. 457-469 . https://doi.org/10.1111/fog.12165 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/fog.12165 |
container_title |
Fisheries Oceanography |
container_volume |
25 |
container_issue |
4 |
container_start_page |
457 |
op_container_end_page |
469 |
_version_ |
1766138795545067520 |