The effects of temperature for development time, fecundity and reproduction on some ornamental aphid species

Abstract

The development time, survivorship and reproduction of the Sarucallis kahawaluokalani (Kirkaldy), Eucallipterus tiliae L., Capitophorus elaeagni del Guercio, Aphis nerii Boyer de Fonscolombe, Cinara cedri Mimeur were studied on the Lagerstroemia indica L., Tilia tomentosa Moench, Elaeagnus angustifolia L., Nerium oleander L. and Cédrus libani Loud, at four constant temperatures (20°C, 22.5°C, 25°C and 27.5°C). Total nymphal development time ranged from 7.78 d at 22.5°C to 9.81 d at 25°C of C.elaeagni, 9.32 d at 25°C to 12.5 d at 20°C of E. tiliae, 7.08 d at 27,5°C to 11.14 d at 20°C of S. kahawaluokalani, 15.85 d at 25°C to 12.57 d at 20°C of A. nerii and 13.00 d at 20°C to 10.07 d at 25°C of C. cedri. The intrinsic rate of increase (rm) at 22.5°C had the highest value for S. kahawaluokalani and C. elaeagni (0.5703) and (0.2945) among all tested constant temperatures. The calculated rm was higher at 25°C for E. tiliae (1.4124) and C. cedri (0.2975) and at 20°C A. nerii (0.2648). That the optimal temperature for E. tiliae and C.cedri on T. tomentosa and C. libani was 25°C, for C. elaeagni and E. tiliae was 22.5°C on E. angustifolia and T. tomentosa and for A. nerii was 20°C on N. oleander.