Two-sex life tables of Psylla chinensis(Hemiptera:Psyllidae)at different temperatures
[Aim]To determine the influence of temperature on the growth,development,and fecundity of Psylla chinensis.[Methods]In a controlled laboratory environment,the developmental period,oviposition rate,and survival rate of P.chinensis were measured at 16,20,24,28,32 and 36 ℃.An age-stage two-sex life table was constructed and used to determine the survival rate,fecundity,life expectancy,reproduction value,and population parameters of P.chinensis.[Resultsl Between 16-24 ℃,the growth rate of P.chinensis increased,whereas the developmental period decreased with increasing temperature.In contrast,temperatures between 24-32 ℃ had no significant effect on the developmental period.At 36 ℃,the development of P.chinensis was inhibited.The highest number of eggs were produced at 24 ℃ with 281.50 eggs per female.Between 16-24 ℃,the age-stage survival rate,population age-stage specific net reproductive rate,and the reproduction value increased with increasing temperature.However,they decreased as temperatures increase between 24-32 ℃.At 24 ℃,the intrinsic rate,net reproduction rate,and finite rate peaked,while the mean generation time reached a minimum value at 28 ℃.[Conclusion]Based on the findings of this study,the optimal temperature range for the growth and development of P.chinensis is 24-28 ℃.
Psylla chinensistemperatureage-stage two-sex life tablegrowth and developmentpopulation parameter
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NSTL
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