大阪湾産カタクチイワシの成長にともなうPCBの体内蓄積

概要

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In this report, we have investigated the accumulation of PCB as a function of growth in Japanese anchovy, Engralis japonica, caught in Osaka bay by periodically sampling through the catch season. Generally PCB concentration increases by exponentially with body length, and proportionally with body weight. In the two sample groups having comparatively distinguishable features, the PCB concentration plotted versus body weight gave values which were distributed on two straight lines of differing slopes. We presume that the one group was hatched in Osaka bay, and the other in open sea and migrated to Osaka bay. The difference in the PCB accumulation rate of the two groups is probably owing to the different intake of lipids during the limited period of anchovy growth, as indicated by the nearly linear functional relationship between the total oil and the total PCB content of whole anchovy.
公益社団法人日本水産学会の論文