Effects of Temperature on Reproduction and Development of Udea ferrugalis(Lepidoptera: Pyralidae)

주홍날개들명나방의 생식과 발육에 미치는 온도의 영향

  • 이기열 (충북농업기술원) ;
  • 안기수 (충북농업기술원) ;
  • 강효중 (충북농업기술원) ;
  • 박성규 (충북농업기술원) ;
  • 김태수 (충북농업기술원)
  • Published : 2002.09.01

Abstract

Effects of temperature on the development and reproduction of the Udea ferrugalis Hubner were investigated at various temperatures (10, 15, 18, 20, 23, 25, 27, 30$\^{C}$). The development times of eggs, larvae, prepupae and pupae were shorter in higher temperatures than in lower ones. Egg and pupa did not develop at 10$\^{C}$. The lower developmental threshold temperatures for eggs, larvae, pupae were 9.5, 9.6 and 11.9$\^{C}$, respectively, and their thermal requirements for development completion were 87.9, 200.9 and 119.7 degree-days at the same temperature, respectively. Adult longevity was 25.2 days at 15$\^{C}$, 7.3 at 23$\^{C}$ and 5.3 at 30$\^{C}$. Mean fecundity per female was higher at 20-23$\^{C}$ compared to other temperatures. Mean generation time in days (T) was shorter in higher temperature region. Net reproductive rate per generation (Ro) was lowest at 15$\^{C}$ (138.2) and it was highest at 20$\^{C}$ (265.4). The intrinsic rate of natural increase (r$\_$m/) was highest at 25$\^{C}$ as 0.247. As a result, it was considered that optimum range of temperature for U. ferrugalis growth was 20.0 to 23$\^{C}$.

Keywords

Udea ferrugatis;Development;Reproduction;Developmental threshold temperature;Degree-day;Intrinsic rate of natural increase

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