Delgado-de-Molina-Acevedo, A. (Alicia)

Gaertner, D.

Pallarés-Soubrier, P. (Pilar)

Soto-Ruiz, M. (María)

This document presents a standardized index update of adult yellowfin (>30 kg) of tropical
purse seine fleets in the Atlantic Ocean from 1980 to 2006. The data used were taken from
spear fishing logbooks and detailed information of the fleet. The standardization has been
carried out by generalized linear models (GLM) using the delta model. The standardized
indices are obtained from the GLM model estimations: one is calculated from the least squares
means (LSMeans) and another from the annual averages of the adjusted values. The variability
of the latter is lower. Therefore, in this case, it is a more adequate index to be used in
assessment models. The year, country, category, age of vessel and catches of skipjack tuna,
which is the other target species of these fleets, were considered as explanatory variables.N

Soto-Ruiz, María

Pallarés-Soubrier, Pilar

Delgado-de-Molina-Acevedo, Alicia

Gaertner, Daniel

Digital.CSIC

Actualización de la CPUE estandarizada de rabil de la flota de cerco tropical en el océano Atlántico de 1980 a 2006

This document presents a standardized index update of adult yellowfin (>30 kg) of tropical
purse seine fleets in the Atlantic Ocean from 1980 to 2006. The data used were taken from
spear fishing logbooks and detailed information of the fleet. The standardization has been
carried out by generalized linear models (GLM) using the delta model. The standardized
indices are obtained from the GLM model estimations: one is calculated from the least squares
means (LSMeans) and another from the annual averages of the adjusted values. The variability
of the latter is lower. Therefore, in this case, it is a more adequate index to be used in
assessment models. The year, country, category, age of vessel and catches of skipjack tuna,
which is the other target species of these fleets, were considered as explanatory variables.

Gaertner, D. (Daniel)

Repositorio Institucional Digital del IEO

Actualización de la CPUE estandarizada de rabil de la flota de cerco tropical en el océano Atlántico de 1980 a 2006

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Digital.CSIC

Repositorio Institucional Digital del IEO