Abstract
Chlorpyrifos, an organophosphate insecticde, was tested for embryOtoxic and teratogenie effects in chick_ Different aqueous concentrations of chlorpyrifos (2.0, 1.0, 1).5, 0.25 and 0.025 ktweg$.4) were injected in yolk sac of eggs at day 4 of incubation, Embryo recoveries were made at day 7 of incubation. At day 7, morphological, anatomical and morphometric studies revealed concentration dependent adverse effects of the insecticide. The developmental defects were reduced in C'R length, microcephaly, under-developed eyes. agenesis of beak, micromelia, Amelia, exccncephaly and ectopia cordis. The present study indicates that Chlorpyrifos is potentially dangerous to avian development at every very low doses.
ASMATULLAH, SHAGUFTA ANDLEEB , NOUREEN ZAHRA. (2004) TERATOLOGICAL EFFECTS OF CHLORPYRIFOS ON CHICK DEVELOPMENT , Punjab University Journal of Zoology, Volume 19, Issue .
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