줄점팔랑나비 (Parnara guttata)에 대한 몇 가지 살충제의 활성과 아치사농도에 의한 영향

Activity and sublethal effects of several insecticides to the rice skipper, Parnara guttata Bremer et Grey (Lepidoptera : Hesperiidae)

  • Oh, Hong-Kyu (National Institute of Agricultural Science & Technology, RDA) ;
  • Lee, Young-Su (National Institute of Agricultural Science & Technology, RDA) ;
  • Lee, Sang-Gae (National Institute of Agricultural Science & Technology, RDA) ;
  • Park, Hyung-Man (National Institute of Agricultural Science & Technology, RDA) ;
  • Choi, Yong-Seok (Chung-nam Agricultural Research and Extension Service) ;
  • Ryu, Gab-Hee (National Institute of Agricultural Science & Technology, RDA) ;
  • Chang, Young-Duck (Chung-nam National University)
  • 발행 : 2002.12.27

초록

본 연구는 국내에서 현재 시판되고 있는 살충제 12종에 대한 줄점팔랑나비 (Parnara guttata)의 발육 단계별 약제감수성 및 아치사농도가 암컷성충의 수명, 산란전기, 산란수, 그리고 차세대의 부화율 및 발육에 미치는 영향을 조사하였다. 알에 대해서는 fenitrothion과 fenthion, cartap hyochloride, imidacloprid, ethofenprox가 높은 활성을 나타내었다. 시험에 사용한 모든 약제는 $1{\sim}2$령 유충에 대해서 활성을 나타내었으며, 5령 유충에 높은 살충활성을 보인 약제는 fenitrothion, fenthion, ethofenprox, fipronil, methoxyfenozide, tebufenozide and Bt. var. kurstaki였다. $3{\sim}4$령기에 $LC_{40}$ 수준의 약제처리 후 생존한 유충으로부터 우화한 성충과 그 차세대에 대한 영향은 대부분의 약제에서 관찰되었다. Fenthion, tebufenozide, cartap hydrochloride, methoxyfenozide, ethofenprox, imidacloprid, apronil은 암컷성충의 수명을 단축시키는 것으로 조사되었다. BPMC, imidacloprid, ethofenprox, fipronil, methoxyfenozide는 암컷성충의 산란전기를 지연시키고 산란수를 감소시켰는데, ethofenprox가 처리된 경우는 전혀 산란을 하지 않았다. 알의 부화율은 fenitrothion을 제외한 모든 약제에서 감소하였으며, 그 중 imidacloprid와 fipronil의 경우 알은 전혀 부화하지 않았다. 또한, IGR제인 methoxyfenozide와 tebufenozide는 차세대 유충의 발육에도 영향을 주었다.

This study was carried out not only to investigate the toxicities of 12 registered insecticides on different developmental stages, but also to determine the sublethal effects on longevity and reproduction of newly emerged adult female and development of the next generation in the rice skipper, Parnara guttata. Fenitrothion, fenthion, cartap hydrochloride, ethofenprox highly suppressed egg-hatch. All insecticides treated showed high larvicidal activity on the 1st to 2nd instar larva. The insecticides showed higher larvicidal activities on the 5th instar larva were fenitrothion, fenthion, ethofenprox, fipronil, methoxyfenozide, tebufenozide and Bt. var. kurstaki. The sublethal doses of fenthion, tebufenozide, cartap hydrochloride, methoxyfenozide, ethofenprox, imidacloprid and fipronil shortened the longevities of newly emerged adult female from the treated larva ($3{\sim}4$ instar). BPMC, imidacloprid, ethofenprox, fipronil and methoxyfenozide delayed the preoviposition periods of adult females and decreased the number of eggs laid when they were treated at the larval stages of the previous generation. Ethofenprox caused severe sublethal effects on P. guttata offspring, completely blocking the production. All insecticides except fenitrothion affected the egg viability, and all eggs from the adult females emerged from the survivors treated larvae with imidacloprid or fipronil fail to hatch. IGRs, methoxyfenozide and tebufenozide showed an adverse effect on the development of next generation larva.

키워드

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