Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico

Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico

The purpuse of this paper is to propose an optimum sampling design using probabilistic techniques to obtain estimators of the average weight of fishes, total number, proportion and number of individuals per length class, and the respective variances. A sampling design based on two strata composed of...

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Huvudupphovsmän: Solana-Sansores, R, Arreguín-Sánchez, F
Materialtyp: Online
Språk:eng
Publicerad: Iniversidad Autónoma de Baja California 1991
Länkar:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/783
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spelling oai:cienciasmarinas.com.mx:article-7832024-01-18T19:18:41Z Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) off Yucatán, México Solana-Sansores, R Arreguín-Sánchez, F The purpuse of this paper is to propose an optimum sampling design using probabilistic techniques to obtain estimators of the average weight of fishes, total number, proportion and number of individuals per length class, and the respective variances. A sampling design based on two strata composed of the ports on both the east and west coasts of Yucatán is suggested, which are separated mainly by the size of fishes within the capture. Within each strata, a three-stage sampling design was defined with primary units (ports), secondary units (boats) and tertiary units (fishes), and their variances obtained. A sample size was fixed for each port, and an optimum sample size for secondary and tertiary units is calculated using the graphical method proposed by Chester and Waters. El objetivo principal del presente trabajo fue definir un diseño de muestreo óptimo usando técnicas de muestreo probabilístico para la obtención de estimaciones del peso promedio por pez, número total de individuos, proporción y número de individuos por clase de longitud en la captura comercial, y sus respectivas varianzas. Se propone un diseño de muestreo en dos estratos de puertos (oriente y poniente), definidos por la diferencia de tallas de los peces. Para cada estrato, se propone un diseño de muestreo en tres etapas, donde las unidades primarias son los puertos, unidades secundarias las embarcaciones y las unidades terciarias los peces, donde, para cada etapa se obtendrá una muestra aleatoria. Definidos los estimadores, se obtienen expresiones para las varianzas a través del método delta. Por último, fijando un tamaño de muestra para los puertos se obtiene un tamaño de muestra óptimo para unidades secundarias y terciarias a través del método gráfico propuesto por Chester y Waters (1985). Iniversidad Autónoma de Baja California 1991-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/783 10.7773/cm.v17i1.783 Ciencias Marinas; Vol. 17 No. 1 (1991); 51-72 Ciencias Marinas; Vol. 17 Núm. 1 (1991); 51-72 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/783/708 Copyright (c) 1991 R Solana-Sansores, F Arreguín-Sánchez https://creativecommons.org/licenses/by/4.0
institution Ciencias Marinas
collection OJS
language eng
format Online
author Solana-Sansores, R
Arreguín-Sánchez, F
spellingShingle Solana-Sansores, R
Arreguín-Sánchez, F
Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico
author_facet Solana-Sansores, R
Arreguín-Sánchez, F
author_sort Solana-Sansores, R
title Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico
title_short Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico
title_full Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico
title_fullStr Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico
title_full_unstemmed Probability sampling design for the artisanal fishery of the red grouper (Epinephelus morio) Off Yucatan, Mexico
title_sort probability sampling design for the artisanal fishery of the red grouper (epinephelus morio) off yucatan, mexico
description The purpuse of this paper is to propose an optimum sampling design using probabilistic techniques to obtain estimators of the average weight of fishes, total number, proportion and number of individuals per length class, and the respective variances. A sampling design based on two strata composed of the ports on both the east and west coasts of Yucatán is suggested, which are separated mainly by the size of fishes within the capture. Within each strata, a three-stage sampling design was defined with primary units (ports), secondary units (boats) and tertiary units (fishes), and their variances obtained. A sample size was fixed for each port, and an optimum sample size for secondary and tertiary units is calculated using the graphical method proposed by Chester and Waters.
publisher Iniversidad Autónoma de Baja California
publishDate 1991
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/783
_version_ 1792095490671640576

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