THE TOXIC EFFECT OF PENTACHLOROPHENATE, A HERBICIDE, ON FISHERY ORGANISMS IN COASTAL WATERS-II:THE EFFECT OF PCP ON CONCHOCELIS

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The artificial culture of Conchocelis with natural sea water has become popular along the Ariake Bay area. So, a certain extent of damage on the laver industry may be expected, if an amount of PCP toxic to Conchocelis be carried into coastal water from paddy-fields by river water. The present paper, therefore, deals with a study of the effect of PCP on the Conchocelis as evidenced by the change in the outer appearance, the succinodehydrogenase activity and the rate of 32P uptake. The present data revealed no change in the outer appearance and the enzyme activity when the Conchocelis was exposed at 29°C for 20 days to sea water containing PCP at a 0.8 ppm level. No change was also noted in the rate of 32P uptake during a 10-day culture at 23°C and 0.8 ppm level. It can be concluded that the Conchocelis is not so sensitive to PCP as are the fish.
社団法人日本水産学会の論文