麻ひ性貝毒の魚毒性〔英文〕

概要

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Attempts were made to examine the ichthyotoxicity of paralytic shellfish poison (PSP) in sixteen species of marine and freshwater fishes. Most of them showed minimum lethal doses (LD100) ranging from 1-8 MU/20g body weight when injected with a partially purified PSP intraperitoneally. Exceptionally, several fishes such as a goby Acanthogobius flavimanus (LD100, 9-17 MU/20g) and puffer Fugu niphobles (14-29 MU/20g) were resistant significantly. On the other hand, all the fishes tested showed much higher resistibility against PSP when administered orally: e. g., the LD100 value was 320-400 MU/20g in rainbow trout Salmo gairdneri and>400 MU/20g in tilapia Tilapia nilotica, 540-600 MU/20g in flatfish Limanda herzensteini, and>1, 700 MU/20g in tigerfish Therapon jarbua. This indicates that the fish generally is endowed with some defense mechanism against PSP.
日本水産學會の論文