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Morphological aberration and growth inhibition of cypermethrin on the development of Gosner stage 25 to 42
(2020) Alizza Yvette B. Memita
Cypermethrin is a synthetic pyethroid a highly used pesticide in agriculture household for insect control. This pesticide is toxic not only for insects but also in mammals. Cypermethrin can be used against pest in the household, in agriculture and in other animals. In order to establish morphological abnormalities and growth inhibition caused by cypermethrin to the development of Gosner stage 25 to Gosner stage 42 Rhinella marina tadpoles, toxicity experiment and observation of the development of tadpoles from gosner stage 25 to were assessed. The acute toxicity experiment revealed that Cypermethrin has an LC50 value of 0.50 ppm which is considered as highly toxic. The observed morphological aberrations caused by Cypermethrin are; bent-tail and discoloration of tail and fore limb of gosner stage 42 tadpoles. Growth retardation was also observed. thus, the R. marina tadpoles at Gosner stage 25 to 42 are significantly affected by the presence of Cypermethrin in terms of morphological aberration with the varying concentrations.