An approach to estimate the daily ration of cod during intensive feeding based on 24 hour fishery

A model descnbing gashic evacuation developed by dos Santos (1990) using a modified version of the power exponential model for stomach evacuation is applied to the Northeast Arctic cod stomachs collected during 24 hour fishery. An approach to estimate the individual daily ration that takes into acco...

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Bibliographic Details
Main Authors: Ajiad, Adnan Mosa, Korsbrekke, Knut
Format: Conference Proceeding
Language:English
Online Access:Request full text
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Summary:A model descnbing gashic evacuation developed by dos Santos (1990) using a modified version of the power exponential model for stomach evacuation is applied to the Northeast Arctic cod stomachs collected during 24 hour fishery. An approach to estimate the individual daily ration that takes into account the effects of initial meal size and fish weight on gastric evacuation rate in the course of 24 hour veriod is presented. The results indicate that the Northeast Arctic cod (length groups 40-44 cm and 45-49 cm) during intensive feeding on deep sea shrimp Pandalus borealis consumed between 0.50 % and 0.58 % of the body weight.