Estimating attraction areas and effective fishing areas for Chilean lemon crab ( Cancer porteri) using traps

The applicability of a method, based on varing distance between traps, for estimating attraction area ( A at) and effective fishing area ( A ef), for Cancer porteri caught with experimental traps, was tested. Based on fishing experiments, where lines of traps were set with different spacing between...

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Bibliographic Details
Published in:Fisheries research 2003-02, Vol.60 (2), p.267-272
Main Authors: Aedo, Gustavo, Arancibia, Hugo
Format: Article
Language:English
Subjects:
Attraction area
Cancer porteri
Crab
Effective fishing area
Marine
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Summary:The applicability of a method, based on varing distance between traps, for estimating attraction area ( A at) and effective fishing area ( A ef), for Cancer porteri caught with experimental traps, was tested. Based on fishing experiments, where lines of traps were set with different spacing between them, the minimum distance at which A at of adjacent traps did not overlap was estimated. This provided an estimate of A at of 9348 m 2/trap. To estimate A ef, an exponential decay function for the probability of capture within the A at was assumed; A ef was estimated at 577 m 2/trap, similar to values estimated for other shallow water crustaceans using SCUBA for calibration. This is inferior to estimates calibrated with underwater photography for crustaceans at greater depths.
ISSN:0165-7836
1872-6763
DOI:10.1016/S0165-7836(02)00177-7