Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data
Given the scarcity of information suitable for stock assessments, the growth and mortality of seven exploited marine fishes in Azorean waters were estimated based on length-frequency data. The studied species were Trachurus picturatus, Sparisoma cretense, Scomber colias, Scorpaena scrofa, Serranus a...
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ftmdpi:oai:mdpi.com:/2075-1729/12/6/778/ 2023-08-20T04:08:41+02:00 Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data Régis Santos Ualerson Iran Peixoto Wendell Medeiros-Leal Ana Novoa-Pabon Mário Pinho agris 2022-05-24 application/pdf https://doi.org/10.3390/life12060778 EN eng Multidisciplinary Digital Publishing Institute Animal Science https://dx.doi.org/10.3390/life12060778 https://creativecommons.org/licenses/by/4.0/ Life; Volume 12; Issue 6; Pages: 778 demersal commercial fish data-limited life history size-based method Northeast Atlantic Text 2022 ftmdpi https://doi.org/10.3390/life12060778 2023-08-01T05:09:07Z Given the scarcity of information suitable for stock assessments, the growth and mortality of seven exploited marine fishes in Azorean waters were estimated based on length-frequency data. The studied species were Trachurus picturatus, Sparisoma cretense, Scomber colias, Scorpaena scrofa, Serranus atricauda, Seriola spp. and Aphanopus carbo. The growth parameters L∞ (cm), k (year−1) and ϕ’ estimated through the ELEFAN_GA_boot routine were set at 55.87, 0.08 and 2.39 for T. picturatus; 55.03, 0.11 and 2.53 for S. cretense; 55.93, 0.18 and 2.76 for S. colias; 61.11, 0.11 and 2.61 for S. scrofa; 52.10, 0.12 and 2.51 for S. atricauda; 107.33, 0.12 and 3.18 for Seriola spp.; and 133.16, 0.09 and 3.19 for A. carbo; respectively. The total mortality rate estimated using the length–converted catch curve method was 0.22, 0.35, 0.58, 0.32, 0.31, 0.39 and 0.22 year−1; the natural mortality included 0.15, 0.20, 0.30, 0.20, 0.21, 0.21 and 0.16 year−1; and fishing mortality rate 0.07, 0.15, 0.28, 0.12, 0.10, 0.18 and 0.06 year−1, respectively, for the species mentioned. The relatively large sizes and slow growth with a low natural mortality rate indicate a high vulnerability to overfishing. Therefore, assessment and management initiatives are highly encouraged to ensure the sustainability of the resources. Text Northeast Atlantic MDPI Open Access Publishing Life 12 6 778 |
institution |
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MDPI Open Access Publishing |
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English |
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demersal commercial fish data-limited life history size-based method Northeast Atlantic |
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demersal commercial fish data-limited life history size-based method Northeast Atlantic Régis Santos Ualerson Iran Peixoto Wendell Medeiros-Leal Ana Novoa-Pabon Mário Pinho Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data |
topic_facet |
demersal commercial fish data-limited life history size-based method Northeast Atlantic |
description |
Given the scarcity of information suitable for stock assessments, the growth and mortality of seven exploited marine fishes in Azorean waters were estimated based on length-frequency data. The studied species were Trachurus picturatus, Sparisoma cretense, Scomber colias, Scorpaena scrofa, Serranus atricauda, Seriola spp. and Aphanopus carbo. The growth parameters L∞ (cm), k (year−1) and ϕ’ estimated through the ELEFAN_GA_boot routine were set at 55.87, 0.08 and 2.39 for T. picturatus; 55.03, 0.11 and 2.53 for S. cretense; 55.93, 0.18 and 2.76 for S. colias; 61.11, 0.11 and 2.61 for S. scrofa; 52.10, 0.12 and 2.51 for S. atricauda; 107.33, 0.12 and 3.18 for Seriola spp.; and 133.16, 0.09 and 3.19 for A. carbo; respectively. The total mortality rate estimated using the length–converted catch curve method was 0.22, 0.35, 0.58, 0.32, 0.31, 0.39 and 0.22 year−1; the natural mortality included 0.15, 0.20, 0.30, 0.20, 0.21, 0.21 and 0.16 year−1; and fishing mortality rate 0.07, 0.15, 0.28, 0.12, 0.10, 0.18 and 0.06 year−1, respectively, for the species mentioned. The relatively large sizes and slow growth with a low natural mortality rate indicate a high vulnerability to overfishing. Therefore, assessment and management initiatives are highly encouraged to ensure the sustainability of the resources. |
format |
Text |
author |
Régis Santos Ualerson Iran Peixoto Wendell Medeiros-Leal Ana Novoa-Pabon Mário Pinho |
author_facet |
Régis Santos Ualerson Iran Peixoto Wendell Medeiros-Leal Ana Novoa-Pabon Mário Pinho |
author_sort |
Régis Santos |
title |
Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data |
title_short |
Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data |
title_full |
Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data |
title_fullStr |
Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data |
title_full_unstemmed |
Growth Parameters and Mortality Rates Estimated for Seven Data-Deficient Fishes from the Azores Based on Length-Frequency Data |
title_sort |
growth parameters and mortality rates estimated for seven data-deficient fishes from the azores based on length-frequency data |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/life12060778 |
op_coverage |
agris |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Life; Volume 12; Issue 6; Pages: 778 |
op_relation |
Animal Science https://dx.doi.org/10.3390/life12060778 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/life12060778 |
container_title |
Life |
container_volume |
12 |
container_issue |
6 |
container_start_page |
778 |
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1774721094511493120 |