Effects of insect growth regulators(IGRs) on vitellogenesis in insect

곤충의 난황형성에 대한 곤충성장조절제의 작용

  • Lee, Hee-Kwon (Division of Biological Resources Science, College of Agriculture, Chonbuk National University) ;
  • Lee, Jong-Jin (Division of Biological Resources Science, College of Agriculture, Chonbuk National University) ;
  • Kim, Moo-Key (Faculty of Biotechnology and Institute of Agricultural Science & Technology, Chonbuk National University) ;
  • Lee, Hoi-Seon (Faculty of Biotechnology and Institute of Agricultural Science & Technology, Chonbuk National University)
  • 이희권 (전북대학교 생물자원과학부) ;
  • 이종진 (전북대학교 생물자원과학부) ;
  • 김무기 (전북대학교 응용생물공학부 및 농업과학기술연구소) ;
  • 이회선 (전북대학교 응용생물공학부 및 농업과학기술연구소)
  • Published : 2001.12.31

Abstract

This review discusses the effects and roles of insect hormones and insect growth regulators (IGRs) on vitellogenesis in adult insects. Insect vitellogenesis is regulated by hormones such as juvenile hormone (JH), ecdysteroids, and neurosecretory hormones (ovaryecdysteroidogenic hormone : OEH) released by neurosecretory cells, diet, and other elements(male specific protein of sperm fluid). In the fat bodies, the vitellogenins are synthesized by the stimulation of JH released by corpus allatum (CA) and ecdysteroids produced by follicle cells with the ovary in most insects. Furthermore, vitellogenins are released into the hemolymph, transported to the ovarioles by carrier protein, and incorporated into oocytes for the developing ovary. Of IGRs, juvenile hormone and its mimics such as methoprene and pyriproxifen appear to have pharmacological effects such as membrane lysis, destruction of salivary grand and midgut epithlial cells, fat body cells, and ovarian tissue, and also anti-juvenile hormone such as precocenes I and II appear to have specific cytotoxicity such as inhibition of corpus allatum and oocytes development. These results suggest that IGRs may be useful as agents for integrated pest management.

Keywords

vitellogenesis;neurosecretory hormone;juvenile hormone;ecdysteroid;methoprene;pyriproxyfen;insect growth regulators;corpus allatum;fat body;oocyte;ovary;integrated pest management(IPM)