Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus)
Abstract Despite the importance both in an ecological and management context, much uncertainty remains about the underlying factors controlling spawning ground use in marine fish. Here, we investigate how spawning ground use of Northeast Arctic (NEA) haddock ( Melanogrammus aeglefinus ) has changed...
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Online Access: | http://dx.doi.org/10.1111/fog.12264 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12264 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12264 |
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crwiley:10.1111/fog.12264 2024-10-13T14:05:05+00:00 Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus) Langangen, Øystein Stige, Leif Christian Kvile, Kristina Ø. Yaragina, Natalia A. Skjæraasen, Jon Egil Vikebø, Frode B. Ottersen, Geir Norges Forskningsråd NordForsk 2018 http://dx.doi.org/10.1111/fog.12264 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12264 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12264 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 27, issue 5, page 435-444 ISSN 1054-6006 1365-2419 journal-article 2018 crwiley https://doi.org/10.1111/fog.12264 2024-09-17T04:49:14Z Abstract Despite the importance both in an ecological and management context, much uncertainty remains about the underlying factors controlling spawning ground use in marine fish. Here, we investigate how spawning ground use of Northeast Arctic (NEA) haddock ( Melanogrammus aeglefinus ) has changed over time. By combining data from a Soviet‐Russian egg survey conducted over a 35 year period (1959–1993) with a biophysical drift model, we estimate annual median spawning latitudes of NEA haddock. Furthermore, we test for statistical association between the median latitude of spawning and covariates that are candidates for shaping the spawning distribution of haddock. The results indicate no association with temperature, as measured at the Kola transect, or demographic structure, as measured by the mean weight of spawners. However, we find a positive and significant association between spawning latitude and spawning stock biomass, indicating that density‐dependence may be more important in shaping spawning location than other factors such as temperature and demographic structure. A potential mechanism for the reported effect of spawning stock biomass may act through the distribution at the feeding grounds, which is reported to expand north‐ and eastwards at high population density. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Fisheries Oceanography 27 5 435 444 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Despite the importance both in an ecological and management context, much uncertainty remains about the underlying factors controlling spawning ground use in marine fish. Here, we investigate how spawning ground use of Northeast Arctic (NEA) haddock ( Melanogrammus aeglefinus ) has changed over time. By combining data from a Soviet‐Russian egg survey conducted over a 35 year period (1959–1993) with a biophysical drift model, we estimate annual median spawning latitudes of NEA haddock. Furthermore, we test for statistical association between the median latitude of spawning and covariates that are candidates for shaping the spawning distribution of haddock. The results indicate no association with temperature, as measured at the Kola transect, or demographic structure, as measured by the mean weight of spawners. However, we find a positive and significant association between spawning latitude and spawning stock biomass, indicating that density‐dependence may be more important in shaping spawning location than other factors such as temperature and demographic structure. A potential mechanism for the reported effect of spawning stock biomass may act through the distribution at the feeding grounds, which is reported to expand north‐ and eastwards at high population density. |
author2 |
Norges Forskningsråd NordForsk |
format |
Article in Journal/Newspaper |
author |
Langangen, Øystein Stige, Leif Christian Kvile, Kristina Ø. Yaragina, Natalia A. Skjæraasen, Jon Egil Vikebø, Frode B. Ottersen, Geir |
spellingShingle |
Langangen, Øystein Stige, Leif Christian Kvile, Kristina Ø. Yaragina, Natalia A. Skjæraasen, Jon Egil Vikebø, Frode B. Ottersen, Geir Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus) |
author_facet |
Langangen, Øystein Stige, Leif Christian Kvile, Kristina Ø. Yaragina, Natalia A. Skjæraasen, Jon Egil Vikebø, Frode B. Ottersen, Geir |
author_sort |
Langangen, Øystein |
title |
Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus) |
title_short |
Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus) |
title_full |
Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus) |
title_fullStr |
Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus) |
title_full_unstemmed |
Multi‐decadal variations in spawning ground use in Northeast Arctic haddock ( Melanogrammus aeglefinus) |
title_sort |
multi‐decadal variations in spawning ground use in northeast arctic haddock ( melanogrammus aeglefinus) |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/fog.12264 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12264 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12264 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Fisheries Oceanography volume 27, issue 5, page 435-444 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fog.12264 |
container_title |
Fisheries Oceanography |
container_volume |
27 |
container_issue |
5 |
container_start_page |
435 |
op_container_end_page |
444 |
_version_ |
1812810959117352960 |