Estimación del descarte por exceso de captura en la pesquería industrial de cerco del stock Norte-Centro de la anchoveta peruana Engraulis ringens a partir de un programa de observación a bordo

Revista Peruana de Biologia

Dreyfus-León, Michel¹  Solana-Arellano, Elena²  Torrejón-Magallanes, Josymar³ 

[1] Centro Regional de Investigación Pesquera, México;Centro de Investigación Científica y Educación Superior de Ensenada, México;Instituto del Mar del Perú, Perú

关键词: Discard;    discard excess catch;    anchoveta;    delta model;    generalized linear model;    On-board observer program.;   

DOI  :  10.15381/rpb.v23i2.12435

学科分类：生物科学（综合）

来源: Universidad Nacional Mayor de San Marcos * Facultad de Ciencias Biologicas

【 摘 要 】

This paper presents estimates of the discard excess catch in the industrial purse seine fisheries of the North-Center stock of the Peruvian anchoveta (Engraulis ringens). Discard excess catch is defined as the portion of the catch that is thrown into the sea when has captured more than the hold capacity can store. The analysis is based on the "On-board observer of the purse seine vessels program" led by the Instituto del Mar del Peru (IMARPE), and in the period 2005 - 2014, 5837 trips were sampled, corresponding to 1.6% of the total trips. The methodologies used in the discard excess catch estimation were: Generalized Linear Model (GLM) and Delta Model. The estimations showed difference in magnitudes but similar trends, although the delta model appears to be a better alternative procedure for estimating the discard excess catch. The Delta Model estimated the purse seine fisheries discarded a range from 2954 to 199 164 tons, an average estimated 121 312 tons, which represent 2.6% of the landings in the period 2005 - 2014. Spatial variables (e.g. distance from the shore, latitude, longitude), physical (SST), and school behavior (e.g. fish aggregation) should be included to improve the analysis and a better understanding of the discard excess catch behavior.

【 授权许可】

CC BY-NC