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

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$\^{C}$.

주홍날개들명나방의 생식과 발육에 미치는 온도의 영향

주홍날개들명나방(Udea ferrugalis)의 온도별(10, 15, 18, 20, 23, 25, 27, 3$0^{\circ}C$) 발육과 생식에 미치는 은도영향에 대하여 조사하였다. 난, 유충, 용기간은 고온에서 짧은 경향이었고, 1$0^{\circ}C$에서는 난과 용 발육은 완료되지 않았다. 각 태별 발육영접온도는 난이 9.5$^{\circ}C$, 유충 9.6$^{\circ}C$ 그리고 용은 11.9$^{\circ}C$이었고, 유효적산온도는 각각 87.9, 200.9, 119.7일도이었다. 산란전기간과 성충수명은 15$^{\circ}C$에서 10.9일, 25.2일이었으나, 23$^{\circ}C$에서는 2.5일, 7.3일, 3$0^{\circ}C$에서는 1.7일, 5.3일로써 온도가 높아질수록 그 기간이 짧았다. 평균산란수는 2$0^{\circ}C$와 23$^{\circ}C$에서 가장 많았다. 세대당 순증식율은 (Ro) 2$0^{\circ}C$에서 265.4로써 가장 높았고, 내적자연증가율은(r$_{m}$ ) $25^{\circ}C$에서 0.247로 가장 높았다. 이 결과로써 주흥날개들명나방의 발육과 생식에 적합한 온도는 2$0^{\circ}C$에서 23$^{\circ}C$이었다.