Author(s):

SM Gaikwad, Sabbithi, Pavan and SK Patil

Abstract: Life table studies of papaya mealybug, Paracoccus marginatus Williams and Granara de Willink indicated that the net reproductive rate, representing the total female births (R₀) was 19.24 female per generation time (T_c) of 35.45 days on hibiscus leaves. The innate capacity of increase in number (r_c) was 0.083 and finite rate (λ) of increase was 1.094 females per female per day and a generation was completed in 32.967 days. The population was able to multiply 1.8737 times every week and the doubling time (DT) was 0.6337 days. The population on reaching a stable age distribution comprised approximately 98.31 per cent of immature stages of papaya mealybug.

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