关键词: 栾多态毛蚜, 温度, 生命表, 发育历期, 存活率, 生殖力

Abstract: 【Aim】 This study aims to explore the effects of temperature on the population growth of Periphyllus koelreuteriae (Takahashi). 【Methods】 We investigated the developmental duration, survivorship, and fecundity of P. koelreuteriae in the laboratory under the conditions of 12, 15, 18, 23, 26 and 29(±1)℃, RH 60%±7% and a photoperiod of 15L: 9D, and constructed life tables of their laboratory populations. 【Results】 The results showed that no nymph hatched at 29℃, and the developmental duration of egg and nymph decreased with the temperature increasing from 12℃ to 23℃. The longest duration of egg and nymph was 13.97 d and 21.94 d at 12℃, and the shortest was 5.86 d and 7.34 d at 23℃, respectively. The relationship between the developmental rate and temperature could be simulated by the Logistic model. Adult lifespan and pre-reproduction period decreased as the temperature increased, and the highest fecundity per female was 107.06 and 120.23 at 18℃ and 23℃, respectively, while the lowest was 63.16 at 26℃. Analysis of life table parameters showed that the net reproductive rate (R₀) and the intrinsic rate of increase (r_m) increased as the temperature increased, with the highest values of both found at 23℃. Relationship between the intrinsic rate of increase (r_m) and temperature (T) could be described by the equation: r_m=-0.0018T²+0.075T-0.5945 (R²=0.9419, P=0.0481). 【Conclusion】Temperature has great effects on the development and reproduction of P. koelreuteriae, and the most suitable temperature range for this pest is from 18℃ to 23℃, during which there is higher intrinsic rate of increase.

Key words: Periphyllus koelreuteriae , temperature, life table, developmental duration, survivorship, fecundity