Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae)
Gurnards are a valuable by-catch of mixed demersal fisheries and are commercially important in European waters, but they are often discarded, reported under “mixed gurnards” and with incomplete biological information by spe-cies. In the present work, a total of 558 piper gurnard specimens of between...
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Online Access: | http://hdl.handle.net/10451/61716 https://doi.org/10.3989/scimar.05308.060 |
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ftunivlisboa:oai:repositorio.ul.pt:10451/61716 2024-02-11T10:07:02+01:00 Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) Sequeira, Vera Sousa, Inês Neves, Ana Rita Vieira, Ana Silva, Elisabete Silva, Frederica Duarte, Ana Marta Mendes, Susana Ganhão, Rui Assis, Carlos Alberto Sampaio e rebelo, Rui Magalhães, Maria Filomena Gil, Maria Manuel Serrano Gordo, Leonel 2024-01-10T18:38:18Z http://hdl.handle.net/10451/61716 https://doi.org/10.3989/scimar.05308.060 eng eng Consejo Superior de Investigaciones Científicas European Maritime and Fisheries Fund MAR2020 (“VALORE-JET: Valorização de espécies rejeitadas e de baixo val-or commercial”, grant MAR-01.03.01-FEAMP-0003) and by the Fundação para a Ciência e Tecnologia (stra-tegic project, UID/MAR/04292/2019; V.S., contract number CEECIND/02705/2017; A.R.V., contract num-ber EECIND/01528/2017). Sequeira V., Sousa I., Neves A., Vieira A.R., Silva E., Silva F., Duarte A.M., Mendes S., Ganhão R., Assis C.A., Rebelo R., Magalhães M.F., Gil M.M., Serrano L. 2023.Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae). Sci. Mar. 87(1): e060. doi: https://doi.org/10.3989/scimar.05308.060 http://hdl.handle.net/10451/61716 doi:10.3989/scimar.05308.060 openAccess http://creativecommons.org/licenses/by/4.0/ article 2024 ftunivlisboa https://doi.org/10.3989/scimar.05308.060 2024-01-17T01:07:43Z Gurnards are a valuable by-catch of mixed demersal fisheries and are commercially important in European waters, but they are often discarded, reported under “mixed gurnards” and with incomplete biological information by spe-cies. In the present work, a total of 558 piper gurnard specimens of between 10.9 and 44.4 cm (1 to 11 years) and 425 red gurnard specimens of between 10.2 and 42.1 cm (0 to 9 years) from the northeast Atlantic (Portuguese) coast were used to study age and growth. The von Bertalanffy growth parameters for piper gurnard were estimated through the combination of whole-otolith readings and back-calculation (L∞=44.7 cm, k=0.16 yr–1 and t0=–2.781 yr). For red gurnard the same growth parameters were estimated using whole-otolith readings (L∞=40.2 cm, k=0.28 yr–1 and t0=–1.074 yr). The results indicate that the red gurnard reaches a smaller length, although it grows faster than the piper gurnard. Natural, instantaneous and fishing mortalities were estimated as well as the exploitation rate for both species. For the Portuguese coast, the red gur-nard showed a higher fishing mortality and exploitation rate than the piper gurnard, raising concerns about its sustainable management. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Northeast Atlantic Universidade de Lisboa: repositório.UL Scientia Marina 87 1 e060 |
institution |
Open Polar |
collection |
Universidade de Lisboa: repositório.UL |
op_collection_id |
ftunivlisboa |
language |
English |
description |
Gurnards are a valuable by-catch of mixed demersal fisheries and are commercially important in European waters, but they are often discarded, reported under “mixed gurnards” and with incomplete biological information by spe-cies. In the present work, a total of 558 piper gurnard specimens of between 10.9 and 44.4 cm (1 to 11 years) and 425 red gurnard specimens of between 10.2 and 42.1 cm (0 to 9 years) from the northeast Atlantic (Portuguese) coast were used to study age and growth. The von Bertalanffy growth parameters for piper gurnard were estimated through the combination of whole-otolith readings and back-calculation (L∞=44.7 cm, k=0.16 yr–1 and t0=–2.781 yr). For red gurnard the same growth parameters were estimated using whole-otolith readings (L∞=40.2 cm, k=0.28 yr–1 and t0=–1.074 yr). The results indicate that the red gurnard reaches a smaller length, although it grows faster than the piper gurnard. Natural, instantaneous and fishing mortalities were estimated as well as the exploitation rate for both species. For the Portuguese coast, the red gur-nard showed a higher fishing mortality and exploitation rate than the piper gurnard, raising concerns about its sustainable management. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Sequeira, Vera Sousa, Inês Neves, Ana Rita Vieira, Ana Silva, Elisabete Silva, Frederica Duarte, Ana Marta Mendes, Susana Ganhão, Rui Assis, Carlos Alberto Sampaio e rebelo, Rui Magalhães, Maria Filomena Gil, Maria Manuel Serrano Gordo, Leonel |
spellingShingle |
Sequeira, Vera Sousa, Inês Neves, Ana Rita Vieira, Ana Silva, Elisabete Silva, Frederica Duarte, Ana Marta Mendes, Susana Ganhão, Rui Assis, Carlos Alberto Sampaio e rebelo, Rui Magalhães, Maria Filomena Gil, Maria Manuel Serrano Gordo, Leonel Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) |
author_facet |
Sequeira, Vera Sousa, Inês Neves, Ana Rita Vieira, Ana Silva, Elisabete Silva, Frederica Duarte, Ana Marta Mendes, Susana Ganhão, Rui Assis, Carlos Alberto Sampaio e rebelo, Rui Magalhães, Maria Filomena Gil, Maria Manuel Serrano Gordo, Leonel |
author_sort |
Sequeira, Vera |
title |
Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) |
title_short |
Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) |
title_full |
Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) |
title_fullStr |
Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) |
title_full_unstemmed |
Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) |
title_sort |
increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (teleostei: triglidae) |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
2024 |
url |
http://hdl.handle.net/10451/61716 https://doi.org/10.3989/scimar.05308.060 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
European Maritime and Fisheries Fund MAR2020 (“VALORE-JET: Valorização de espécies rejeitadas e de baixo val-or commercial”, grant MAR-01.03.01-FEAMP-0003) and by the Fundação para a Ciência e Tecnologia (stra-tegic project, UID/MAR/04292/2019; V.S., contract number CEECIND/02705/2017; A.R.V., contract num-ber EECIND/01528/2017). Sequeira V., Sousa I., Neves A., Vieira A.R., Silva E., Silva F., Duarte A.M., Mendes S., Ganhão R., Assis C.A., Rebelo R., Magalhães M.F., Gil M.M., Serrano L. 2023.Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae). Sci. Mar. 87(1): e060. doi: https://doi.org/10.3989/scimar.05308.060 http://hdl.handle.net/10451/61716 doi:10.3989/scimar.05308.060 |
op_rights |
openAccess http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3989/scimar.05308.060 |
container_title |
Scientia Marina |
container_volume |
87 |
container_issue |
1 |
container_start_page |
e060 |
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1790605145486131200 |