Fecundity and egg viability of house fly exposed to insect growth regulators

성충에 처리한 IGRs계 살충제가 집파리의 산란과 불임에 미치는 영향

  • Park, Chung-gyoo (College of Agriculture, Gyeong-sang National University) ;
  • Choe, Sang-young (College of Veterinary Medicine, Gyeong-sang National University) ;
  • Kim, Jong-shu (College of Veterinary Medicine, Gyeong-sang National University) ;
  • Kim, Doo-ho (Research Management Bureau, Rural Development Administration) ;
  • Lee, Heung-su (Gyeongnam Agricultural Research and Extension Service)
  • 박정규 (경상대학교 농과대학 식물자원환경학부(농어촌개발연구소)) ;
  • 최상용 (경상대학교 수의과대학) ;
  • 김종수 (경상대학교 수의과대학) ;
  • 김두호 (농촌진흥청 연구관리국) ;
  • 이흥수 (경남농업기술원)
  • Received : 1999.04.01
  • Published : 1999.06.22

Abstract

Two-day old house fly adults were exposed to six insect growth regulators, flufenoxuron, teflubenzuron, triflumuron, diflubenzuron, methoxyfenozide, tebufenozide, as a feed additive (milk+5% sugar+chemical) in the laboratory for 6 days. The number of eggs deposited by the exposed-adults, viability of the eggs, and $F_1$ larval development were checked. All the IGRs tested were found to have no adverse effect on the reproduction of house fly, except methoxyfenozide (210ppm). The most effective inhibitor to egg hatch was flufenoxuron, followed by teflubenzuron, triflumuron, and diflubenzuron. Exposure to flufenoxuron (over 5ppm), teflubenzuron (over 25ppm), triflumuron (over 125ppm), and diflubenzuron (over 125ppm) reduced egg hatchability to 0 to 1.3%, but lower concentrations of these IGRs were less effective (6.3 to 46.3% egg hatchability). Almost all the larvae emerged from eggs deposited by the adults exposed to diflubenzuron (62.5ppm) and teflubenzuron (12.5ppm) failed to develop into pupae, causing total mortalities of 98% and 100%, respectively. However, two IGRs, methoxyfenozide and tebufenozide, did not inhibit egg hatch and $F_1$ larval development, except methoxyfenozide (210ppm) treatment These results suggest that these 4 IGRs may be used in the development of autosterilization system for house fly control. However, further work is required to develop delivery systems capable of transferring an effective dose to the fly under field conditions.