Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Effect of Temperature on Development and Reproduction of the Rice Armyworm, Pseudaietia separata Walker (Lepidoptera: Noctuidae)

멸강나방의 발육과 생식에 미치는 온도의 영향

  • 고해랑 (충북대학교 농과대학 농생물학과) ;
  • 백현화 (충북대학교 농과대학 농생물학과) ;
  • 김길화 (충북대학교 농과대학 농생물학과)
  • Published : 2003.03.01
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Abstract

Development and reproduction of the rice armyworm, Pseudaletia separata Walker, were investigated under different temperatures (13, 15, 18, 20, 25, 30, and 33$^{\circ}C$ ). It took 80.6 days to grow from egg to pre-adult at 15$^{\circ}C$, and 27.3 days at 30$^{\circ}C$ (3.0 times shorter growth period compared with that at 30$^{\circ}C$ ). The range of developmental temperature of rice armywom was 15-30$^{\circ}C$. Survival rate from hatched larva to pre-adult was the highest as 70.6% at 25$^{\circ}C$. Pre-oviposition period and the adult longevity were 4.2 and 12.3 days at 15$^{\circ}C$, and 2.9 and 8.0 days at 30$^{\circ}C$, respectively. The highest average fecundity per female was 816.6 at 25$^{\circ}C$. The net reproductive rate (R$\_$o/) and intrinsic rate of natural increase (r$\_$m/) were the highest at 25$^{\circ}C$ as 913.0 and 0.175, respectively. As a result, it was considered that optimum of temperature for P. separata growth was = 25.0$^{\circ}C$.

멸강나방의 발육과 생식에 미치는 온도의 영향을 조사하였다. 알에서 성충까지의 발육기간은 15$^{\circ}C$ 에서 80.6일, 3$0^{\circ}C$에서는 27.3일로 3$0^{\circ}C$에서 15$^{\circ}C$보다 약 3배 정도 짧았다. 발육온도의 범위는 15-3$0^{\circ}C$이었다. 부화유충에서 성충까지 생존률은 $25^{\circ}C$에서 70.6%로 가장 높았다. 암컷 성충의 수명은 15$^{\circ}C$에서 12.3일 그리고 3$0^{\circ}C$에서 8.0일로 온도가 높을수록 짧았다. 암컷 한 마리 당 평균 총 산란수는 $25^{\circ}C$에서 816.6개로 가장 많았으나, 3$0^{\circ}C$에서는 85.4개로 가장 적었다. 세대순증가율(R$_{o}$ )과 내적자연증가율(r$_{m}$ )은 $25^{\circ}C$에서 각각 913.0, 0.175로 가장 크게 나타났다. 이상의 결과로 멸강나방의 성장에 최적 온도는 =25.$0^{\circ}C$로 판단된다

Keywords

References

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