Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic
Blue jack mackerel Trachurus picturatus monthly samples were collected between 1998 and 2011 to determine morphometric relationships, maturity, growth rates, reproduction and spawning seasonality in north-east Atlantic waters (ICES area Xa2). A total of 2895 specimens were sampled, ranging from 98 t...
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Online Access: | http://dx.doi.org/10.1017/s0025315414001751 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315414001751 |
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crcambridgeupr:10.1017/s0025315414001751 2024-03-03T08:47:11+00:00 Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic Garcia, Alexandra Pereira, João g. Canha, Ângela Reis, Dália Diogo, Hugo 2014 http://dx.doi.org/10.1017/s0025315414001751 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315414001751 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 95, issue 2, page 401-410 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2014 crcambridgeupr https://doi.org/10.1017/s0025315414001751 2024-02-08T08:24:59Z Blue jack mackerel Trachurus picturatus monthly samples were collected between 1998 and 2011 to determine morphometric relationships, maturity, growth rates, reproduction and spawning seasonality in north-east Atlantic waters (ICES area Xa2). A total of 2895 specimens were sampled, ranging from 98 to 542 mm in fork-length ( L F ). The morphometric relationships (length-length and length-weight) showed statistically significant differences between sexes. Ages were estimated by counting growth bands on otoliths and verified by marginal increment analysis, with specimens ranging from 0 to 18 years. The von Bertalanffy models used to estimate growth parameters for both observed and back-calculated length-at-age data gave good fits. The gonads were analysed macroscopically and the spawning season found to occur from December to May. The length at 50% maturity for females and males occurred at 277 mm L F (4.3 years) and 288 mm L F (5.1 years), respectively. The results provide important biological information for fisheries assessment of a species that plays an important key role in the surrounding ecosystem. Article in Journal/Newspaper North East Atlantic Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 95 2 401 410 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Garcia, Alexandra Pereira, João g. Canha, Ângela Reis, Dália Diogo, Hugo Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic |
topic_facet |
Aquatic Science |
description |
Blue jack mackerel Trachurus picturatus monthly samples were collected between 1998 and 2011 to determine morphometric relationships, maturity, growth rates, reproduction and spawning seasonality in north-east Atlantic waters (ICES area Xa2). A total of 2895 specimens were sampled, ranging from 98 to 542 mm in fork-length ( L F ). The morphometric relationships (length-length and length-weight) showed statistically significant differences between sexes. Ages were estimated by counting growth bands on otoliths and verified by marginal increment analysis, with specimens ranging from 0 to 18 years. The von Bertalanffy models used to estimate growth parameters for both observed and back-calculated length-at-age data gave good fits. The gonads were analysed macroscopically and the spawning season found to occur from December to May. The length at 50% maturity for females and males occurred at 277 mm L F (4.3 years) and 288 mm L F (5.1 years), respectively. The results provide important biological information for fisheries assessment of a species that plays an important key role in the surrounding ecosystem. |
format |
Article in Journal/Newspaper |
author |
Garcia, Alexandra Pereira, João g. Canha, Ângela Reis, Dália Diogo, Hugo |
author_facet |
Garcia, Alexandra Pereira, João g. Canha, Ângela Reis, Dália Diogo, Hugo |
author_sort |
Garcia, Alexandra |
title |
Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic |
title_short |
Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic |
title_full |
Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic |
title_fullStr |
Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic |
title_full_unstemmed |
Life history parameters of blue jack mackerel Trachurus picturatus (Teleostei: Carangidae) from north-east Atlantic |
title_sort |
life history parameters of blue jack mackerel trachurus picturatus (teleostei: carangidae) from north-east atlantic |
publisher |
Cambridge University Press (CUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1017/s0025315414001751 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315414001751 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 95, issue 2, page 401-410 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315414001751 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
95 |
container_issue |
2 |
container_start_page |
401 |
op_container_end_page |
410 |
_version_ |
1792503342174306304 |