Studies on the Nymphal Parasitism, Haplogonatopus atratus Esaki at Hashimoto (Dryinidae) of the Small Brown Planthopper, Laodelphax striatellus Fallen (I)

애멸구 약충기생봉(Haplogonatopus atratus)에 관한 연구 (I)

  • Kim Jeong Bu (Research Bureau, Gyeongnam Provincial O.R.D.) ;
  • Kim Chang Hyo (College of Agriculture, Gyeongsang National University) ;
  • Cho Dong Jin (Research Bureau, Gyeongnam Provincial O.R.D.)
  • Published : 1984.06.01

Abstract

This study was carried out to know the percentage of parasitism and host preference of Haplogonatopus atratus (Dryinidae) in the nymphs of small brown planthopper. The percentages of parasitism in the nymphal stage of planthopper at each generation were $19.2\%$ for overwinterd generation, $10.8\%$ for the 1st generation on barley field and $21.5\%$ for the 2nd generation on paddy field, respectively. The percents of the parasitism for the respective instars were $78.2\%$(3rd), $17.5\%$(End), and $4.2\%$(4th) when various developmental stages of the planthopper had been caged together. No parasitized individual was found for the instars of the 1st, the 5th and the adult.

본 연구는 애멸구 약충기생봉의 1종인 Haplogatopus atratus(Dryinidae)의 애멸구 약충에 대한 세대별 기생율과 령기별 기생선호성을 조사 하였으며 그 결과는 다음과 같다. 1. Haplogonatopus atratus의 애별구 약충에 대한 세대별 기생율은 월동세대가 $19.2\%$, 제 1세대인 맥전에서 $10.8\%$, 제 2세대인 본답에서 $21.5\%$였다. 2. 숙주인 애멸구 약충에 대한 령기별 기생선호성은 1령, 5령 및 성충에는 전혀 기생을 하지 않었으며 2령이 $17.5\%$, 3령이 $78.2\%$, 4령이 $4.2\%$로서 3령이 가장 높은 선호성을 보였다.

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