グッピーの稚魚による数種の殺貝剤の毒性試験について

概要

論文の詳細を見る
Niclosamide (5,2'-dichloro-4-nitro-salicylicamide), B-2 (Sodium 2,5-dichloro-4-bromophenol) and Yurimin (3,5-dibromo-4-hydroxy-4'-nitroazobenzene) were tested for their toxicity against fish using juveniles of the guppy. The juveniles provided for this test were those of a yellow strain selected at National Institute for Environmental Studies, Tsukuba, Japan. The juveniles had been seperated into two groups soon after parturition, one with food and another without food and they had been kept until 18th day when high mortality occurred among the preserved population without food. Among the three chemicals tested, Yurimin and Niclosamide had high toxicity to the juveniles and B-2 was slightly lower in its toxicity. In the case of B-2,LC_<50> values between the batch with food and that without food did not differ till 2 days after parturition but thereafter differentiated with age. Namely, the batch with food increased gradually the tolerance against the chemical, whereas the starved batch did not change the susceptibility up to 10 days after parturition. On the contrary, the LC_<50> value decreased lineally with the age of juveniles, when Niclosamide was tested. The results would suggest the usefulness of the juveniles of the guppy as a standard fish in testing the toxicity of chemicals.
日本衛生動物学会の論文
1979-06-15