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Ichthyotoxicity found in cultured media of Protogonyaulax spp.

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Abstract

Ichthyotoxicity was observed in the cultured media from Protogonyaulax catenella and P. tamarensis. No paralytic shellfish poison was detected in the cultured media. Test fish in the cultured media died showing signs of hypoxia. Histological observations of the gills of intoxicated fish indicated that the epithelial cells were swollen and exfoliated from the pillar cell. The cultured media had hemolytic activity against erythrocytes of various animals. The media also decreased the elasticity of eggs of rainbow trout Salmo gairdneri. From these results, it is concluded that the cultured media of both species of Protogonyaulax contain a cytotoxin which is lethal to fish.

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Communicated by M. Anraku, Hiroshima

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Ogata, T., Kodama, M. Ichthyotoxicity found in cultured media of Protogonyaulax spp.. Marine Biology 92, 31–34 (1986). https://doi.org/10.1007/BF00392742

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  • DOI: https://doi.org/10.1007/BF00392742

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