Korean journal of applied entomology (한국응용곤충학회지)
- Volume 35 Issue 3
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- Pages.238-242
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- 1996
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- 1225-0171(pISSN)
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- 2287-545X(eISSN)
Synergism of Several Synergists of Antii-Juvenile Hormone Analog, 7-Ethoxy Precocene II to Milkweed Bug Oncopeltus fasciatus Dallas
7-Ethoxy precocene II 항유약호르몬유사물에 대한 몇가지 협력제의 Oncopeltus fasciatus Dallas에 있어서 협력작용
Abstract
The second instar milkweed bugs, Oncopeltus fasciatus were exposed to the residue of 6-methoxy-7-ethoxy-2, 2- dimethylchromene(or 7-ethoxy precocene 11, 7-EP-11) with one, two, or four different kinds of synergist(s) deposited as a residue on 9 cm diameter petri dishes. The anti juvenile hormone analog, 7-EP-I1 yielded a 50% effectiveness concentration at 1.18 wg/cmZ. The concentration of 7-EP-I1 and R020-9747 combined gave 0.084 ~*g/cm', as much 14 times more potent than with 7-EP-I1 alone. Most of the other synergists, including geraniol, 4-chalcone oxide, isosafrole, and piperonyl butoxide however, showed comparatively low level synergism with 1.0-4.3 times, depending upon the combinations of the synergist(s). The obtained results were considered that R020-9747, an analog of benzopyran with similar structure to that of 7-EP-I1 inhibited selectively the insect monooxygenase oxidative defense mechanism, in the body except for corpora allata because general antioxidants of piperonyl butoxide, isosafrole, and 4-phenyl chalcone oxide showed relatively mild synergism.
몇가지 협력제의 7-ethoxy precocene II와 협력작용을 통한 활성증가와 작용기작을 구명하기 위하여 mikweed bug, Oncopeltus fasciatus 2령충에 항유약호르몬유사물과 협력제가 처리된 petri dish에 접종하여 생리활성 정도를 측정하였다. 얻어진 결과는 다음과 같다. 7-Ehtoxy precocene II의 반수활성농도는