关键词: 栎黄枯叶蛾, 温度, 生长发育, 繁殖, 发育起点温度, 有效积温

Abstract: 【Aim】 Trabala vishnou gigantina has become a serious leaf-eating pest of Hippophae rhamnoides in recent years, which feeds leaves of host plants at the larval stage, causing poor growth or even death of host plants. This study aims to determine the effects of temperature on the growth, development and reproduction of T. v. gigantina, and thereby to provide a foundation for the forecasting and scientific management of this pest. 【Methods】 Under a series of temperature gradients (19, 22, 25, 28 and 31℃), the developmental duration, food consumption, mating rate, oviposition, longevity of T. v.gigantina was investigated. 【Results】 Within the constant temperature ranging from 19 to 31℃, the duration of various developmental stages of T. v.gigantina shortened as temperature rose gradually. The development threshold temperatures of egg, larva, pupa, pre-oviposition and one complete generation were 9.24±0.45, 10.85±0.87, 14.56±0.85, 9.65±0.54, 10.48±0.52℃ and 341.22±9.54℃, respectively, and their effective accumulated temperatures were 1 285.64±17.65, 445.35±8.65, 13.34±1.25, 2 085.35±25.84 degree·days, respectively. The food consumption and mating rate were not affected significantly by temperature, and the number of eggs laid under temperatures of 22, 25 and 28℃ was higher than that under the other temperatures. The adult longevity was negatively correlated with temperature. 【Conclusion】 The temperature range of 22-28℃ is the most suitable for the growth, development and reproduction of T. v. gigantina. These findings provide valuable information for rational control of T. v. gigantina.

Key words: Trabala vishnou gigantina, temperature, growth and development, reproduction, developmental threshold temperature, effective accumulated temperature