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 species. In the present work, a total of 558 piper gurnard specimens of between...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2023-03-01
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| Series: | Scientia Marina |
| Subjects: | |
| Online Access: | https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1947 |
| _version_ | 1797856111133458432 |
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| author | Vera Sequeira Inês Sousa Ana Neves Ana Rita Vieira Elisabete Silva Frederica Silva Ana Marta Duarte Susana Mendes Rui Ganhão Carlos Alberto Assis Rui Rebelo Maria Filomena Magalhães Maria Manuel Gil Leonel Serrano Gordo |
| author_facet | Vera Sequeira Inês Sousa Ana Neves Ana Rita Vieira Elisabete Silva Frederica Silva Ana Marta Duarte Susana Mendes Rui Ganhão Carlos Alberto Assis Rui Rebelo Maria Filomena Magalhães Maria Manuel Gil Leonel Serrano Gordo |
| author_sort | Vera Sequeira |
| collection | DOAJ |
| 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 species. 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 gurnard showed a higher fishing mortality and exploitation rate than the piper gurnard, raising concerns about its sustainable management.
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| first_indexed | 2024-04-09T20:35:05Z |
| format | Article |
| id | doaj.art-d7d069510b1540768db3c0ecf11b63ae |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-04-09T20:35:05Z |
| publishDate | 2023-03-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-d7d069510b1540768db3c0ecf11b63ae2023-03-30T10:41:54ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342023-03-0187110.3989/scimar.05308.060Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae)Vera Sequeira0Inês Sousa1Ana Neves2Ana Rita Vieira3Elisabete Silva4Frederica Silva5Ana Marta Duarte6Susana Mendes7Rui Ganhão8Carlos Alberto Assis9Rui Rebelo10Maria Filomena Magalhães11Maria Manuel Gil12Leonel Serrano Gordo13MARE – Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa - Departamento de Biologia Animal, Faculdade de Ciências, Universidade de LisboaMARE – Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa - CoLAB +ATLANTIC LVTMARE – Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa - Departamento de Biologia Animal, Faculdade de Ciências, Universidade de LisboaMARE – Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa - Departamento de Biologia Animal, Faculdade de Ciências, Universidade de LisboaDepartamento de Biologia Animal, Faculdade de Ciências, Universidade de LisboaDepartamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa - MARE – Marine and Environmental Sciences Centre, ESTM, Polytechnic of LeiriaMARE – Marine and Environmental Sciences Centre, ESTM, Polytechnic of LeiriaMARE – Marine and Environmental Sciences Centre, Polytechnic of LeiriaMARE – Marine and Environmental Sciences Centre, ESTM, Polytechnic of LeiriaMARE – Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa - Departamento de Biologia Animal, Faculdade de Ciências, Universidade de LisboaDepartamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa- cE3c – Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências da Universidade de LisboaDepartamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa - cE3c – Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências da Universidade de LisboaMARE – Marine and Environmental Sciences Centre, Polytechnic of LeiriaMARE – Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa - - Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa 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 species. 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 gurnard showed a higher fishing mortality and exploitation rate than the piper gurnard, raising concerns about its sustainable management. https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1947by-catchage determinationgrowth curvesfishing mortalitylongevityChelidonichthys cuculus |
| spellingShingle | Vera Sequeira Inês Sousa Ana Neves Ana Rita Vieira Elisabete Silva Frederica Silva Ana Marta Duarte Susana Mendes Rui Ganhão Carlos Alberto Assis Rui Rebelo Maria Filomena Magalhães Maria Manuel Gil Leonel Serrano Gordo Increasing biological knowledge for better management of by-catch species: age, growth, and mortality of piper and red gurnards (Teleostei: Triglidae) Scientia Marina by-catch age determination growth curves fishing mortality longevity Chelidonichthys cuculus |
| title | 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_short | 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 |
| topic | by-catch age determination growth curves fishing mortality longevity Chelidonichthys cuculus |
| url | https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1947 |
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