小菜蛾生活史觀察
Other Title
Observations of the Life History of Diamondback Moth Plutella xylostella (L.) in Whole Year
Journal
中華農業研究
Journal Volume
33
Journal Issue
4
Pages
424-430
Date Issued
1984-12-10
Date
1984-12-10
Author(s)
呂鳳嗚
李錫山
Feng-Ming Lu
Hsi-Shan Lee
Abstract
小菜蛾，Plutella xylostolla ( L. ) ，是十字花科蔬菜世界性之重要害蟲。本文記述在本所鳳山分所紅室內連續飼育此蟲一年之結果，全年共21 代，有世代重疊之現象。平均卵期為3.49 ±1.20 天，幼蟲期為8.24 ±1.80 天，蛹期為5.10 ±2.09 天，成蟲期為7.30 ±2.61 天。雄蟲平均壽命為7.33 ±2.48 天，雌蟲為7.19 ±2.85 天。卵孵化率為80.19 %±12.19 %，雌蟲平均產卵量為74.24 ±27.52 粒，產卵期為3.33 ±1.18 天。完成一世代平均需24.10 ±7.09 天。各蟲期受溫度（xl），相對濕度（x2）之影響很大，複迴歸分析方程式為Ŷ=71.4948-1.7538 xl-0.0004 x2 （R=0.9631 ）。與溫度成負相關，與相對濕度成正相關；但以溫度之影響較大。
The diamondback moth, Plutelle xylostella (L.), is one of the most destructive insect pests on cruciferous vegetables in the world. This paper reported about its life history in whole year. The rearing work was carried out in a shaded portion of a screen greenhouse from Jan. to Dec. in 1983. The moth took about 21 generations in a year, and overlapping were observed between generations. The mean developmental durations of every stage from egg to adult were 3.49 ± 1.20 days, 8.24 ± 1.80 days, 5.10±2.09 days and 7.30±2.61 days respectively. The longevity of male and female adults averaged 7.33±2.48 days and 7.19±2.85 days. The mean hatching percentage of egg was 80.19% and the mean deposition of eggs was 74.24 per female, while the mean duration of oviposition was 3.33 days. One generation was about 24.10±7.09 days in average through the year. The developmental period, Y (in days) in relation to the mean temperature, Xl (°C) and the mean relative humidity, X2 (%) of various generations was Ŷ=71.4948-1.7538 Xl-0.0004 X2 (R = 0.9631). The relationship between the development of the moth and the temperature was negative, while the relative humidity was positive within adequate range.
Publisher
農業試驗所
Type
journal article
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