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Abstract

This experiment aims to estimate the median lethal doses (LD50) of irradiation (IR) for the matured freshwater oviparous ornamental fish, Sulawesi medaka (Oryzias woworae). Both male and female were treated with 0, 10, 20, 25, 30, 35, 40, 60, 200,400, 600 and 800 Gy. Each treatment was conducted in triplicate. The 96, 168 and 336 h- LD50 of male and female were 643.1, 47.0, 33.8 and 646.8, 42.5, 35.7 Gy, respectively.

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