Inter-cohort growth for three tropical resources: tilapia, octopus and lobster

Growth parameters are an important component for the stock assessment of exploited aquatic species. However, it is often difficult to apply direct methods to estimate growth and to analyse the differences between males and females, particularly in tropical areas. The objective of this study was to a...

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Autores principales:	Velázquez-Abunader, Iván, Gómez-Muñoz, Victor Manuel, Salas, Silvia, Ruiz-Velazco, Javier M. J.
Formato:	Online
Idioma:	eng
Publicado:	Universidad de Costa Rica 2015
Acceso en línea:	https://revistas.ucr.ac.cr/index.php/rbt/article/view/16272

id	RBT16272
record_format	ojs
spelling	RBT162722022-06-09T17:44:37Z Inter-cohort growth for three tropical resources: tilapia, octopus and lobster Velázquez-Abunader, Iván Gómez-Muñoz, Victor Manuel Salas, Silvia Ruiz-Velazco, Javier M. J. modal progression growth sex lobster octopus tilapia Growth parameters are an important component for the stock assessment of exploited aquatic species. However, it is often difficult to apply direct methods to estimate growth and to analyse the differences between males and females, particularly in tropical areas. The objective of this study was to analyse the inter-cohort growth of three tropical resources and discuss the possible fisheries management implications. A simple method was used to compare individual growth curves obtained from length frequency distribution analysis, illustrated by case studies of three tropical species from different aquatic environments: tilapia (Oreochromis aureus), red octopus (Octopus maya) and the Caribbean spiny lobster (Panulirus argus). The analysis undertaken compared the size distribution of males and females of a given cohort through modal progression analysis. The technique used proved to be useful for highlighting the differences in growth between females and males of a specific cohort. The potential effect of extrinsic and intrinsic factors on the organism’s development as reflected in the size distribution of the cohorts is discussed. Universidad de Costa Rica 2015-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/16272 10.15517/rbt.v63i3.16272 Revista de Biología Tropical; Vol. 63 No. 3 (2015): Volume 63 – Regular number 3 – September 2015; 617–627 Revista de Biología Tropical; Vol. 63 Núm. 3 (2015): Volumen 63 – Número regular 3 – Setiembre 2015; 617–627 Revista Biología Tropical; Vol. 63 N.º 3 (2015): Volume 63 – Regular number 3 – September 2015; 617–627 2215-2075 0034-7744 10.15517/rbt.v63i3 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/16272/19993 https://revistas.ucr.ac.cr/index.php/rbt/article/view/16272/19994 Copyright (c) 2015 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
institution	Universidad de Costa Rica
collection	Revista de Biología Tropical
language	eng
format	Online
author	Velázquez-Abunader, Iván Gómez-Muñoz, Victor Manuel Salas, Silvia Ruiz-Velazco, Javier M. J.
spellingShingle	Velázquez-Abunader, Iván Gómez-Muñoz, Victor Manuel Salas, Silvia Ruiz-Velazco, Javier M. J. Inter-cohort growth for three tropical resources: tilapia, octopus and lobster
author_facet	Velázquez-Abunader, Iván Gómez-Muñoz, Victor Manuel Salas, Silvia Ruiz-Velazco, Javier M. J.
author_sort	Velázquez-Abunader, Iván
description	Growth parameters are an important component for the stock assessment of exploited aquatic species. However, it is often difficult to apply direct methods to estimate growth and to analyse the differences between males and females, particularly in tropical areas. The objective of this study was to analyse the inter-cohort growth of three tropical resources and discuss the possible fisheries management implications. A simple method was used to compare individual growth curves obtained from length frequency distribution analysis, illustrated by case studies of three tropical species from different aquatic environments: tilapia (Oreochromis aureus), red octopus (Octopus maya) and the Caribbean spiny lobster (Panulirus argus). The analysis undertaken compared the size distribution of males and females of a given cohort through modal progression analysis. The technique used proved to be useful for highlighting the differences in growth between females and males of a specific cohort. The potential effect of extrinsic and intrinsic factors on the organism’s development as reflected in the size distribution of the cohorts is discussed.
title	Inter-cohort growth for three tropical resources: tilapia, octopus and lobster
title_short	Inter-cohort growth for three tropical resources: tilapia, octopus and lobster
title_full	Inter-cohort growth for three tropical resources: tilapia, octopus and lobster
title_fullStr	Inter-cohort growth for three tropical resources: tilapia, octopus and lobster
title_full_unstemmed	Inter-cohort growth for three tropical resources: tilapia, octopus and lobster
title_sort	inter-cohort growth for three tropical resources: tilapia, octopus and lobster
publisher	Universidad de Costa Rica
publishDate	2015
url	https://revistas.ucr.ac.cr/index.php/rbt/article/view/16272
work_keys_str_mv	AT velazquezabunaderivan intercohortgrowthforthreetropicalresourcestilapiaoctopusandlobster AT gomezmunozvictormanuel intercohortgrowthforthreetropicalresourcestilapiaoctopusandlobster AT salassilvia intercohortgrowthforthreetropicalresourcestilapiaoctopusandlobster AT ruizvelazcojaviermj intercohortgrowthforthreetropicalresourcestilapiaoctopusandlobster
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Inter-cohort growth for three tropical resources: tilapia, octopus and lobster

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