Age and stage-specific life table parameters of Harmonia dimidiata (Coleoptera: Coccinellidae) fed on Rhopalosiphum padi (Hemiptera: Aphididae) at different temperatures

Abstract Background The life history and predation rate of the ladybird beetle, Harmonia dimidiata Fabricius (Coleoptera: Coccinellidae) were compared at four different temperatures (16, 20, 24, 28 °C). beetles fed on bird cherry-oat aphid, Rhopalosiphum padi Linnaeus (Hemiptera: Aphididae) investigated 70 ± 10% RH with a photoperiod 14:10 h (L:D). Results reproductive rates ( R 0 ) 20.07, 51.37, 66.95, 14.54 beetle offspring 16, °C, respectively. indicated that temperature had good impacts feeding potential, development, survivorship fecundity, especially 24 C other tested temperatures. In addition, jackknife bootstrap techniques employed to estimate population parameters' means. obtained means parameters, using technique fit normal distribution. Meanwhile, generated biologically meaningless zero values for . Both finite incorporated into limited comparison potential. Conclusion growth H. is more effective biocontrol agent R. °C than 16 °C.