Effects of Photoperiod on Oviposition and Emergence of Egg Parasitoid, Trichogramma dendrolimi Mastumura (Hymenoptera, Trichogrammatidae)

광조건이 송충알벌(벌목, 알벌과)의 산란과 우화에 미치는 영향

  • 박영규 (동국대학교 응용생물학과) ;
  • 이해풍 (동국대학교 응용생물학과) ;
  • 이기상 (동국대학교 응용생물학과) ;
  • 한만위 (농업과학기술원 작물보호부 농업해충과) ;
  • 이정운 (고령지농업시험장)
  • Published : 1999.08.01

Abstract

We investigated the effect of constant photoperiod (16L : 8D, 12L : 12D, 8L : 16D), on the oviposition, parasitism, and emergence of Trichogramma dendrolimi. Also during 16L : 8D condition circadian, oviposition and emergence of this species on artificial eggs were checked every 2hrs. When twelve eggs of Antheraea pern~i and artificial eggs were provided, the wasps had the highest rate of oviposition in the first day, and decreased dramatically there after. In these different photoperiod, the total oviposition numbers per A. pernyi eggs by the wasp were 161.8 in 16L : 8D, 145.8 in 121 : 12D and 128.5 in 8L : 16D respectively in the first day. On the other hand for the artificial egg in 16L : 8D photoperiod, the total oviposition number per egg was 106.8 in the first day, 26.6 in the 2nd day and 21.3 in the 3rd day. The rate of emergence from A. pernyi eggs was not different depend on wasp's day age, however in the artificial eggs, after the first day's 84.7% decreased considerably. The emergence rate from artificial eggs was the highest comparatively between 04:OO-0600 hours.