Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis
The population structure of the blue jack mackerel (Trachurus picturatus, Osteichthyes, Carangi-dae), in the northeast Atlantic is still unknown. To identify any distinct population units, three areas were selected: waters off Madeira, Peniche (mainland Portugal), and the Canary Islands. Knowledge o...
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ftunivlaspalmas:oai:https://accedacris.ulpgc.es:10553/41439 2023-05-15T17:41:07+02:00 Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis Vasconcelos, Joana Vieira, Ana R. Sequeira, Vera González, José A. Kaufmann, Manfred Gordo, Leonel Serrano 2018 http://hdl.handle.net/10553/41439 https://doi.org/10.7755/FB.116.1.9 eng eng Fishery Bulletin 0090-0656 http://hdl.handle.net/10553/41439 doi:10.7755/FB.116.1.9 2-s2.0-85041925231 92 81 116 WOS:000424920300009 Fishery Bulletin [ISSN 0090-0656], v. 116 (1), p. 81-92 251005 Zoología marina 240114-4 Taxonomía animal. Peces 2018 ftunivlaspalmas https://doi.org/10.7755/FB.116.1.9 2019-09-08T16:40:30Z The population structure of the blue jack mackerel (Trachurus picturatus, Osteichthyes, Carangi-dae), in the northeast Atlantic is still unknown. To identify any distinct population units, three areas were selected: waters off Madeira, Peniche (mainland Portugal), and the Canary Islands. Knowledge of population structure is an aspect of the population dynamics of a species that is essential to effectively assess the existence of stocks and manage fisheries. In this study, geometric morphometrics and otolith shape analysis were successfully applied for population identification. Multivariate analysis of variance (MANOVA) revealed no body shape differences between males and females in each area studied, and therefore the sexes were combined for the analysis. The results of the discriminant analysis showed that a low misclassification occurred among areas; 78.0% of individuals were correctly classified. MANOVA performed on the otolith normalized elliptic Fourier descriptors revealed significant areal differences, but no difference between sexes. An overall classification success of 73.3% in the canonical discriminant analysis was achieved. These results indicate the usefulness of both otolith and body shape analysis for differentiation of blue jack mackerel stocks from the northeast Atlantic and indicate the existence of at least three distinguishable populations of this species. Other/Unknown Material Northeast Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Fishery Bulletin 116 1 81 92 |
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Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
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ftunivlaspalmas |
language |
English |
topic |
251005 Zoología marina 240114-4 Taxonomía animal. Peces |
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251005 Zoología marina 240114-4 Taxonomía animal. Peces Vasconcelos, Joana Vieira, Ana R. Sequeira, Vera González, José A. Kaufmann, Manfred Gordo, Leonel Serrano Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis |
topic_facet |
251005 Zoología marina 240114-4 Taxonomía animal. Peces |
description |
The population structure of the blue jack mackerel (Trachurus picturatus, Osteichthyes, Carangi-dae), in the northeast Atlantic is still unknown. To identify any distinct population units, three areas were selected: waters off Madeira, Peniche (mainland Portugal), and the Canary Islands. Knowledge of population structure is an aspect of the population dynamics of a species that is essential to effectively assess the existence of stocks and manage fisheries. In this study, geometric morphometrics and otolith shape analysis were successfully applied for population identification. Multivariate analysis of variance (MANOVA) revealed no body shape differences between males and females in each area studied, and therefore the sexes were combined for the analysis. The results of the discriminant analysis showed that a low misclassification occurred among areas; 78.0% of individuals were correctly classified. MANOVA performed on the otolith normalized elliptic Fourier descriptors revealed significant areal differences, but no difference between sexes. An overall classification success of 73.3% in the canonical discriminant analysis was achieved. These results indicate the usefulness of both otolith and body shape analysis for differentiation of blue jack mackerel stocks from the northeast Atlantic and indicate the existence of at least three distinguishable populations of this species. |
author |
Vasconcelos, Joana Vieira, Ana R. Sequeira, Vera González, José A. Kaufmann, Manfred Gordo, Leonel Serrano |
author_facet |
Vasconcelos, Joana Vieira, Ana R. Sequeira, Vera González, José A. Kaufmann, Manfred Gordo, Leonel Serrano |
author_sort |
Vasconcelos, Joana |
title |
Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis |
title_short |
Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis |
title_full |
Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis |
title_fullStr |
Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis |
title_full_unstemmed |
Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis |
title_sort |
identifying populations of the blue jack mackerel (trachurus picturatus) in the northeast atlantic by using geometric morphometrics and otolith shape analysis |
publishDate |
2018 |
url |
http://hdl.handle.net/10553/41439 https://doi.org/10.7755/FB.116.1.9 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Fishery Bulletin [ISSN 0090-0656], v. 116 (1), p. 81-92 |
op_relation |
Fishery Bulletin 0090-0656 http://hdl.handle.net/10553/41439 doi:10.7755/FB.116.1.9 2-s2.0-85041925231 92 81 116 WOS:000424920300009 |
op_doi |
https://doi.org/10.7755/FB.116.1.9 |
container_title |
Fishery Bulletin |
container_volume |
116 |
container_issue |
1 |
container_start_page |
81 |
op_container_end_page |
92 |
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1766142367878873088 |