Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean
Lophius gastrophysusis an exploited deep-sea demersal fishing resource in the Southeast-South region of Brazil, a capture target for the twin trawl multi-specific bottom trawling fleet. Considered a prized fish, it is commonly processed on board, retaining commercial cuts of the tail calledcolas. Th...
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Instituto Oceanográfico - Universidade de São Paulo
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ftunivsaopojs:oai:revistas.usp.br:article/199499 2024-05-19T07:48:34+00:00 Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean Silva, Arthur Tavares da Tubino, Rafael de Almeida Martins, Raquel Rennó Mascarenhas Monteiro-Neto, Cassiano Costa, Marcus Rodrigues da 2022-06-29 application/pdf https://revistas.usp.br/ocr/article/view/199499 https://doi.org/10.1590/2675-2824070.21063atds eng eng Instituto Oceanográfico - Universidade de São Paulo https://revistas.usp.br/ocr/article/view/199499/183539 https://revistas.usp.br/ocr/article/view/199499 doi:10.1590/2675-2824070.21063atds Copyright (c) 2022 Ocean and Coastal Research Ocean and Coastal Research; Vol. 70 (2022): Ocean and Coastal Research (regular volume) Ocean and Coastal Research; v. 70 (2022): Ocean and Coastal Research (regular volume) 2675-2824 Monkfish Age Growth Mortality Fishing info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original Article 2022 ftunivsaopojs https://doi.org/10.1590/2675-2824070.21063atds 2024-04-28T23:38:01Z Lophius gastrophysusis an exploited deep-sea demersal fishing resource in the Southeast-South region of Brazil, a capture target for the twin trawl multi-specific bottom trawling fleet. Considered a prized fish, it is commonly processed on board, retaining commercial cuts of the tail calledcolas. Thus it is difficult to recognize the original length of the specimens and, consequently, to assess the dynamics of sources and the impacts of catches. Individual length and weight data were used to generate body predictive models correlated to the monkfishcola. The parameters of growth, mortality and exploitation rate were also estimated from the size structure ofLophius gastrophysuscaptured by the industrial bottom trawling fleet in Southeast Brazil between May 2013 and April 2015, assessing monkfish stock based on indirect estimates of life history information. All predictive models of body size showed coefficients of determination above 0.9 (P <0.001), indicating good data adjustments. The growth parameters were determined by the minimum residual variance methodology, being: L∞= 92.4 cm and k = 0.158/year. The size structure tended to increase with depth in the spring. Individuals under the age of sexual maturity contributed significantly to catches. The length of first sexual maturation was estimated at 48.6 cm and the recruitment age was between 6 and 7 years. The coefficients of total, natural, fishing and exploitation rates were estimated at: Z = 0.676; M = 0.241; F = 0.436 and E = 0.644. The fishing mortality rate was higher than the reference value (E > 0.50) indicating a state of overexploitation of the southeast most part of stock. A review of the current Brazilian legislation established for the species on the southeast coast is recommended. Article in Journal/Newspaper South Atlantic Ocean Universidade de São Paulo: Portal de Revistas da USP Ocean and Coastal Research 70 |
institution |
Open Polar |
collection |
Universidade de São Paulo: Portal de Revistas da USP |
op_collection_id |
ftunivsaopojs |
language |
English |
topic |
Monkfish Age Growth Mortality Fishing |
spellingShingle |
Monkfish Age Growth Mortality Fishing Silva, Arthur Tavares da Tubino, Rafael de Almeida Martins, Raquel Rennó Mascarenhas Monteiro-Neto, Cassiano Costa, Marcus Rodrigues da Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean |
topic_facet |
Monkfish Age Growth Mortality Fishing |
description |
Lophius gastrophysusis an exploited deep-sea demersal fishing resource in the Southeast-South region of Brazil, a capture target for the twin trawl multi-specific bottom trawling fleet. Considered a prized fish, it is commonly processed on board, retaining commercial cuts of the tail calledcolas. Thus it is difficult to recognize the original length of the specimens and, consequently, to assess the dynamics of sources and the impacts of catches. Individual length and weight data were used to generate body predictive models correlated to the monkfishcola. The parameters of growth, mortality and exploitation rate were also estimated from the size structure ofLophius gastrophysuscaptured by the industrial bottom trawling fleet in Southeast Brazil between May 2013 and April 2015, assessing monkfish stock based on indirect estimates of life history information. All predictive models of body size showed coefficients of determination above 0.9 (P <0.001), indicating good data adjustments. The growth parameters were determined by the minimum residual variance methodology, being: L∞= 92.4 cm and k = 0.158/year. The size structure tended to increase with depth in the spring. Individuals under the age of sexual maturity contributed significantly to catches. The length of first sexual maturation was estimated at 48.6 cm and the recruitment age was between 6 and 7 years. The coefficients of total, natural, fishing and exploitation rates were estimated at: Z = 0.676; M = 0.241; F = 0.436 and E = 0.644. The fishing mortality rate was higher than the reference value (E > 0.50) indicating a state of overexploitation of the southeast most part of stock. A review of the current Brazilian legislation established for the species on the southeast coast is recommended. |
format |
Article in Journal/Newspaper |
author |
Silva, Arthur Tavares da Tubino, Rafael de Almeida Martins, Raquel Rennó Mascarenhas Monteiro-Neto, Cassiano Costa, Marcus Rodrigues da |
author_facet |
Silva, Arthur Tavares da Tubino, Rafael de Almeida Martins, Raquel Rennó Mascarenhas Monteiro-Neto, Cassiano Costa, Marcus Rodrigues da |
author_sort |
Silva, Arthur Tavares da |
title |
Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean |
title_short |
Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean |
title_full |
Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean |
title_fullStr |
Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean |
title_full_unstemmed |
Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean |
title_sort |
conversion factor for size structure reconstruction and growth of lophius gastrophysus miranda ribeiro, 1915 catches in the south atlantic ocean |
publisher |
Instituto Oceanográfico - Universidade de São Paulo |
publishDate |
2022 |
url |
https://revistas.usp.br/ocr/article/view/199499 https://doi.org/10.1590/2675-2824070.21063atds |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Ocean and Coastal Research; Vol. 70 (2022): Ocean and Coastal Research (regular volume) Ocean and Coastal Research; v. 70 (2022): Ocean and Coastal Research (regular volume) 2675-2824 |
op_relation |
https://revistas.usp.br/ocr/article/view/199499/183539 https://revistas.usp.br/ocr/article/view/199499 doi:10.1590/2675-2824070.21063atds |
op_rights |
Copyright (c) 2022 Ocean and Coastal Research |
op_doi |
https://doi.org/10.1590/2675-2824070.21063atds |
container_title |
Ocean and Coastal Research |
container_volume |
70 |
_version_ |
1799466861872545792 |