HISTOPATHOLOGICAL EFFECTS OF N-PHENYL THIOUREA ON THE OVARIES OF EPILACHNA VIGINTIOCTOPUNCTATA (Fabr.) (COLEOPTERA: COCCINELLIDAE)
R. SANDHU *
Department of Zoology, Punjabi University, Patiala-147 002, India
H. KAUR *
Department of Zoology, Punjabi University, Patiala-147 002, India
VINEETA SOOD *
Department of Zoology, Punjabi University, Patiala-147 002, India
*Author to whom correspondence should be addressed.
Abstract
50 mg of N-phenyl thiourea when applied through contact to females of Epilachna vigintioctopunctata brings about severe histological aberrations in germarium as well as in vitellarium regions. The aberrations are in the form of nuclear clumping and cytoplasmic vacuolization in the trophocytes, prefoliicular tissue and follicular epithelium. As a result of these cellular damages, yolk deposition within the developing oocytes is either incomplete or is inhibited.
Keywords: Effects of N-phenylthiourea, Histology of Epilachna vigintioctopunctata, Development of oocytes