Development of a multi-cohort analysis method and its application to the Indian Ocean yellowfin tuna [Thunnus albacares] length composition

A new multi-cohort model with the use of fishing effort as a tuning factor was developed and applied to yellowfin tuna (Thunnus albacares ) data of the Japanese longline fishery in the Indian Ocean from 1952 to 1980. The length compositions were converted to age compositions by means of normal curve...

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Veröffentlicht in:Bulletin - Far Seas Fisheries Research Laboratory (Japan) 1988-01 (25), p.1-72
Hauptverfasser: Wang, C.H. (National Taiwan Univ., Taipei (Taiwan, Province of China)), Tanaka, S
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creator Wang, C.H. (National Taiwan Univ., Taipei (Taiwan, Province of China))
Tanaka, S
description A new multi-cohort model with the use of fishing effort as a tuning factor was developed and applied to yellowfin tuna (Thunnus albacares ) data of the Japanese longline fishery in the Indian Ocean from 1952 to 1980. The length compositions were converted to age compositions by means of normal curve fitting. The result of analysis showed a decrease of recruitment and population size. However, it should be noted that catches by the surface fisheries were neglected in the calculations.
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source AgriKnowledge(アグリナレッジ)AGROLib
subjects AGE
ANALISIS ESTADISTICO
ANALYSE STATISTIQUE
DINAMICA DE LA POBLACION
DYNAMIQUE DES POPULATIONS
EDAD
FISHERY RESOURCES
INDIAN OCEAN
LARGURA
LENGTH
LINE FISHING
LONGUEUR
Marine
MORTALIDAD
MORTALITE
MORTALITY
OCEAN INDIEN
OCEANO INDICO
PECHE A LA LIGNE
PESCA CON LINEA
POPULATION DYNAMICS
PROGRAMACION
PROGRAMMATION
PROGRAMMING
RECURSOS PESQUEROS
RESSOURCE HALIEUTIQUE
STATISTICAL ANALYSIS
THUNNUS
Thunnus albacares
title Development of a multi-cohort analysis method and its application to the Indian Ocean yellowfin tuna [Thunnus albacares] length composition
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