Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Comparison of Predation Rates of Three Phytoseiid Mite Species on Citrus Red Mite (Panonychus citri McGregor) on Citrus Tree

감귤원에 발생하는 귤응애에 대한 3종 이리응애의 포식량 비교

  • 김동환 (제주농업시험장 감귤시험장) ;
  • 김광식 (제주농업시험장 감귤시험장) ;
  • 현재욱 (제주농업시험장 감귤시험장) ;
  • 정순경 (제주농업시험장 감귤시험장)
  • Published : 2002.03.01
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Abstract

Predation amount and density suppression ability of three species of phytoseiid mites (one native, Amblyseius womersleys Schica; two introduced species, Amblyseius fallacis Garman and Typhlodromus occidentalis Nesbit) on Panonychus citri McGregor were examined in laboratory condition (25$\pm$1$\^{C}$, RH 65$\pm$5%, 16L:8D). A. fallacis and T. occidentalis consumed 20.1 and 9.1 eggs of P. citri, respectively, whereas A. womersleyi consumed 1.1 eggs. When each larva, protonymph and deutonymph of P. citri were supplied as prey for 24 hours. A. womersleyi consumed 23.8, 16.5 and 9.0, and A. fallacis consumed 26.1, 18.2 and 7.4, respectively. However, T. occidentalis consumed only 7.8, 4.2 and 4.2. respectively Density suppression ability of A. womersleyi and A. fallacis against P. citri was very high at the release ratios of 20 : 1 (prey : predator). However, T. occidentalis did not regulate P. citri population effectively Developmental periods from egg to adult of A. womersleyi and A. fallacis was 6.1 and 5.9 days at 25$\^{C}$, respectively.

국내 자생종인 긴털이리응애(Amblyseius womersleyi Schica)와 도입종인 Amblyseius fallacis Garman, Typhlodromus occidentalis Nesbit 등 3종 이리응애의 감귤원 귤응애에 대한 포식능력과 피식자에 대한 밀도억제효과를 사육실($25^{\circ}C$, RH 65%, 16L : 8D)에서 조사한 결과는 다음과 같다 귤응애 알에 대한 포식량은 A. fallacis 20: 1개, 긴털이리응애와 T. occidentalis는 각각 1.1개와 9.1개였다. 귤응애 유충과 제1약충 그리고 제2약충에 대해 긴털이리응애는 각 23.8, 16.5, 9.0마리, A. fallacis는 각 26.1, 18.2, 7.4마리 그리고 T. occidentalis는 각 7.8, 4.2, 4.2마리를 포식하였다. 20:1의 비율에서 귤응애 밀도억제효과는 긴털이리응애와 A. fallacis는 효과가 좋았으나 T. occidentalis는 효과가 매우 낮았다. $25^{\circ}C$에서 알에서 우화까지의 발육기간은 긴털이리응애는 6.1일, A. fallacis는 5.9일로 두 종간에 유의차는 없었다.

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References

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