Updated standardized catch rates for South Atlantic stock of swordfish (Xiphias gladius) from the Spanish Longline fleet for the period 1989-2015

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URI: http://hdl.handle.net/10508/15631
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Authors
Ramos-Cartelle, A. (Ana); García-Cortés, B. (Blanca); Fernández-Costa, J. (José); Mejuto-García, J. (Jaime)
Date
2017
Type
article
Keywords
Swordfish
CPUE
GLM
Longline
Abstract
Updated standardized catch rates in number and in weight were obtained using General Linear Modeling (GLM) procedures from trips carried out by the Spanish surface longline fleet fishing the South Atlantic swordfish stock during the period 1989-2015. The criteria used to define factors were similar to those used in previous papers as were the models applied. The results explained 65% and 71% of CPUE variability in number and weight, respectively, pointing to very stable standardized CPUE and mean weight trends over time, with a slight increase of abundance in the last year analyzed. The statistical diagnoses were highly satisfactory.