Phit chiap phlan khong Brestan-60 to luk kung chaebuai.
1986
Wanna Ruttanagosrikit | Suphachai Summawutthi
Toxicity of a molluscicide, Brestan-60 on various stage of Penaeus merguiensis larva and post larva, were tested, using static bioassay, Twenty four hours LC50 for nauplius, protozoea, mysis, post larva 9, post larva 25 and post larva 30 were 0.115, 0.035, 0.111, 0.081, 0.159 and 0.200 mg./l. respectively. Median lethal concentration (LC50) at 48 hrs., 72 hrs. and 96 hrs. for post larva 9 were 0.081, 0.061 and 0.048 mg./l. Median lethal concentration (LC50) at 48 hrs., 72 hrs., and 96 hrs. for post larva 25 were 0.076, 0.059 and 0.048 mg./l. 48 hrs. LC50 for post larva 30 was 0.052 mg./l.
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