Effects of temperature on growth of Leguminivora glycinivorella eggs and larva
In order to explore the effects of temperature on development of the soybean pod borer,Leguminivora glycinivorella(Lepidoptera:Olethreutidae),the developmental duration and survivorship of this pest were investigated in the laboratory at 17,21,25,29 and 33℃.The results showed that the developmental rate of eggs increased with the increases of temperature from 17℃ to 33℃.The relationship between developmental rate and temperature could be fitted well with Logistic model:Yegg =0.61/[1 + exp (3.19-0.08t)] (F =128.597 6,p =0.007 7,R =0.996 1).Developmental rate of larva increased with the increases of temperature below 33℃.The 2nd and 3rd instar larva grew faster than the other instars.While developmental rate of the 1st,4th and 5th instar larva decreased sharply at 33℃.The relationship between developmental rate of larva and temperature could be described by Logistic model:Ylarva =0.10/[1 + exp(3.25-0.17t)] (F =21.731 6,p =0.044 0,R =0.977 8).Egg hatching rate was insignificantly influenced by temperature,but the survival rate of larva was significantly influenced by temperature.The adaptability of larva to environment temperature gradually increased with the instar.Temperature affected the larval nutrition accumulation.The mature larva body weight was 17.26mg at 25℃ which was significantly heavier than at other temperature.The development threshold temperature and the effective accumulated temperature were 7.24℃,117.63 d · ℃ for eggs and 4.71℃,285.33 d · ℃ for larva.
Leguminivora glycinivorellaTemperatureDevelopment rateSurvival rateEffective accumulated temperature
国家科技期刊平台
NSTL
万方数据
维普
