Potential bioeconomic impact of reduced mortality of codend escapees of the shrimp fishery in the Davis Strait

The potential impact of reduced mortality of codend escapees was investigated by a dynamic pool model applying constant fishing effort on a varying stock. The model is applied to data from the Greenland offshore shrimp ( Pandalus borealis ) fishery. The study indicates that the potential impact of a...

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Bibliographic Details
Published in:ICES Journal of Marine Science
Main Author: Christensen, Steen
Format: Text
Language:English
Published: Oxford University Press 1995
Subjects:
Articles
Greenland
Davis Strait
Pandalus borealis
Online Access:http://icesjms.oxfordjournals.org/cgi/content/short/52/5/843
https://doi.org/10.1006/jmsc.1995.0081
Description
Summary:The potential impact of reduced mortality of codend escapees was investigated by a dynamic pool model applying constant fishing effort on a varying stock. The model is applied to data from the Greenland offshore shrimp ( Pandalus borealis ) fishery. The study indicates that the potential impact of an increase in mesh size depends heavily on the present level of mortality of the codend escapees, Fε. Simulations show that the decrease in long term equilibrium catches following a mesh size increase from 43 mm to 55 mm is proportional to Fε. The economic break-even point is at a mortality rate of 50% per year.

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