Life Table and Demographic Parameter of the Metallic Blue Ladybeetle, Curinus coeruleus Mulsant fed with the Asian Citrus Psyllid, Diaphorina citri Kuwayama
A. Soemargono, R. Ibrahim, Y.B. Ibrahim, and M.S. Osman
Life table parameters were calculated for the blue metallic ladybeetle, Curinus coeruleus (Mulsant) fed the Asian citrus psyllid, Diaphorina citri at temperature 28-30°C and 78-85 % RH and natural photoperiod in the insectary of Faculty of Agriculture, University Putra Malaysia. The results showed that development of immature stages took 19.1 ± 0.3 days; adult mated females lived for 34.2 ± 4.7 (range 24 – 39) days and produced a mean of 80.3 ± 13.6 progeny per female, with a sex ratio of 1 : 1.8 (♂ : ♀). The net reproductive rate (R0) was 59.08 and the capacity for increase (rc) 0.113. The finite rate of increase (l) was 1.29/female/day while the intrinsic rate of natural increase (rm) was 0.116/female/day. Thus, each female contributed 60.24 individuals to the population in a mean generation time of 35.33.
Key words: Curinus coeruleus, Diaphorina citri, life table, intrinsic rate of natural increase, progeny, generation time