Abstract

Fertilized roach (Rutilus rutilus) eggs were incubated for the first 48 h in 3 × 10−7 to 3 × 10−1 mg/l N-methyl-N-nitro-N-nitrosoguanidine (MNNG) solutions. The incubation resulted in changes in blastomere mitotic indices and an increase in the number of aberrant mitoses. The concentration dependence of the studied parameters is described by a nonlinear curve. Egg incubation in a tested MNNG concentrations range leads to decrease in larvae length and weight.

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