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水温 (2 2± 1)℃溴氰菊酯对草鱼胚胎 2 7h孵化EC50 为 2 13μg/L ,孵化安全浓度为 0 2 13μg/L ;96hLC50 和 96h致畸EC50 分别为 5 0 9μg/L、12 10 μg/L ,安全浓度为 0 5 0 9μg/L。畸形的主要症状为弯体、卵黄囊膨大、围心腔水肿以及部分仔鱼的体表有瘤状赘生物
The EC50 of larva was 21 13 μg / L and the safe hatching concentration was 0 2 13 μg / L at the temperature of (2 2 ± 1) ℃ for deltamethrin. The teratogenic EC50 of 96h LC50 and 96 h were respectively 590 μg / L and 12 10 μg / L, safe concentration of 0 5 0 9μg / L. The main symptoms of deformity bend, swelling of the yolk sac, pericardial edema and part of the surface of larvae tumorous neoplasm