Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situations

Unassessed fisheries, mostly non-targeted fisheries, are now particularly predominant in many commercial fisheries and are critical to food security in developing countries. These fisheries typically lack reliable data essential for assessing their stocks, leaving them susceptible to overfishing and...

Full description

Saved in:
Bibliographic Details
Main Authors: Kindong Richard, Wu Feng, Sarr Ousmane, Dai Libin, Tian Siquan, Dai Xiaojie
Format: Article
Language:English
Published: Sciendo 2022-03-01
Series:Oceanological and Hydrobiological Studies
Subjects:
Online Access:https://doi.org/10.26881/oahs.2022.1.10
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1832593594114899968
author Kindong Richard
Wu Feng
Sarr Ousmane
Dai Libin
Tian Siquan
Dai Xiaojie
author_facet Kindong Richard
Wu Feng
Sarr Ousmane
Dai Libin
Tian Siquan
Dai Xiaojie
author_sort Kindong Richard
collection DOAJ
description Unassessed fisheries, mostly non-targeted fisheries, are now particularly predominant in many commercial fisheries and are critical to food security in developing countries. These fisheries typically lack reliable data essential for assessing their stocks, leaving them susceptible to overfishing and declining yield over time. This study proposes a framework for determining the life history and management of such fisheries. Data on the length composition and reproduction of wahoo Acanthocybium solandri, a common bycatch species in commercial fisheries, were obtained from observers aboard Chinese longline vessels in the Eastern Atlantic between 2010 and 2020 and were used as a case study. A comprehensive methodological approach was applied using data on this species to estimate its life history parameters, to evaluate biological reference points, and to provide proxies for the stock status. The final main growth parameters obtained were: Linf = 161.21 cm FL (157.34–194.68), K = 0.47/year (0.14–0.65); estimated size at first maturity was 89.6 cm FL. As assessed by the set of methods applied, the wahoo stock state was healthy in the Tropical Eastern Atlantic Ocean. This study advises against using a single approach to determining life history parameters in data-limited fisheries, as this may affect reference points and thus management recommendations. This study provides a route whereby many easy-to-apply methods can be used to understand the status of multiple stocks in poorly managed fisheries, and thus provide management plans.
format Article
id doaj-art-15c58c6391bf454aae5285f4543a8e5c
institution Kabale University
issn 1897-3191
language English
publishDate 2022-03-01
publisher Sciendo
record_format Article
series Oceanological and Hydrobiological Studies
spelling doaj-art-15c58c6391bf454aae5285f4543a8e5c2025-01-20T11:10:24ZengSciendoOceanological and Hydrobiological Studies1897-31912022-03-0151111513210.26881/oahs.2022.1.10Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situationsKindong Richard0Wu Feng1Sarr Ousmane2Dai Libin3Tian Siquan4Dai Xiaojie5College of Marine Sciences, Shanghai Ocean University, Shanghai201306, China;College of Marine Sciences, Shanghai Ocean University, Shanghai201306, China;College of Marine Sciences, Shanghai Ocean University, Shanghai201306, China;College of Marine Sciences, Shanghai Ocean University, Shanghai201306, China;College of Marine Sciences, Shanghai Ocean University, Shanghai201306, China;College of Marine Sciences, Shanghai Ocean University, Shanghai201306, China;Unassessed fisheries, mostly non-targeted fisheries, are now particularly predominant in many commercial fisheries and are critical to food security in developing countries. These fisheries typically lack reliable data essential for assessing their stocks, leaving them susceptible to overfishing and declining yield over time. This study proposes a framework for determining the life history and management of such fisheries. Data on the length composition and reproduction of wahoo Acanthocybium solandri, a common bycatch species in commercial fisheries, were obtained from observers aboard Chinese longline vessels in the Eastern Atlantic between 2010 and 2020 and were used as a case study. A comprehensive methodological approach was applied using data on this species to estimate its life history parameters, to evaluate biological reference points, and to provide proxies for the stock status. The final main growth parameters obtained were: Linf = 161.21 cm FL (157.34–194.68), K = 0.47/year (0.14–0.65); estimated size at first maturity was 89.6 cm FL. As assessed by the set of methods applied, the wahoo stock state was healthy in the Tropical Eastern Atlantic Ocean. This study advises against using a single approach to determining life history parameters in data-limited fisheries, as this may affect reference points and thus management recommendations. This study provides a route whereby many easy-to-apply methods can be used to understand the status of multiple stocks in poorly managed fisheries, and thus provide management plans.https://doi.org/10.26881/oahs.2022.1.10data-poor fisheriesfisheries managementlength-frequency analysissex ratiomaturitymortality
spellingShingle Kindong Richard
Wu Feng
Sarr Ousmane
Dai Libin
Tian Siquan
Dai Xiaojie
Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situations
Oceanological and Hydrobiological Studies
data-poor fisheries
fisheries management
length-frequency analysis
sex ratio
maturity
mortality
title Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situations
title_full Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situations
title_fullStr Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situations
title_full_unstemmed Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situations
title_short Life history of wahoo, Acanthocybium solandri, in the Tropical Eastern Atlantic Ocean – the importance of applying a suite of methods for fisheries assessment in data-limited situations
title_sort life history of wahoo acanthocybium solandri in the tropical eastern atlantic ocean the importance of applying a suite of methods for fisheries assessment in data limited situations
topic data-poor fisheries
fisheries management
length-frequency analysis
sex ratio
maturity
mortality
url https://doi.org/10.26881/oahs.2022.1.10
work_keys_str_mv AT kindongrichard lifehistoryofwahooacanthocybiumsolandriinthetropicaleasternatlanticoceantheimportanceofapplyingasuiteofmethodsforfisheriesassessmentindatalimitedsituations
AT wufeng lifehistoryofwahooacanthocybiumsolandriinthetropicaleasternatlanticoceantheimportanceofapplyingasuiteofmethodsforfisheriesassessmentindatalimitedsituations
AT sarrousmane lifehistoryofwahooacanthocybiumsolandriinthetropicaleasternatlanticoceantheimportanceofapplyingasuiteofmethodsforfisheriesassessmentindatalimitedsituations
AT dailibin lifehistoryofwahooacanthocybiumsolandriinthetropicaleasternatlanticoceantheimportanceofapplyingasuiteofmethodsforfisheriesassessmentindatalimitedsituations
AT tiansiquan lifehistoryofwahooacanthocybiumsolandriinthetropicaleasternatlanticoceantheimportanceofapplyingasuiteofmethodsforfisheriesassessmentindatalimitedsituations
AT daixiaojie lifehistoryofwahooacanthocybiumsolandriinthetropicaleasternatlanticoceantheimportanceofapplyingasuiteofmethodsforfisheriesassessmentindatalimitedsituations