Biological characteristics and life table parameters of cotton mealybug, Phenococcus solenopsis (Homoptera: Pseudococcidae) on china-rose at different temperatures

Document Type : Research paper-Persian

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The cotton mealybug, Phenacoccus solenopsis Tinsley is one of the important pests of Malvaceae plants that has caused serious damage to China rose Hibiscus rosa-sinensis in Khuzestan province recently. Mean pre-imaginal duration of female P.solenopsis at 20, 25 and 35 °C (65±5% R.H. and 14:10 L: D) were 19.02, 16.6 and 13.54 days, respectively. Mean pre-imaginal mortality were 26.94, 32.72 and 39.12 % at above mentioned temperatures, respectively. One the same three temperatures, mean female longevities were 41.94, 33.8 and 24.6 days, mean daily nymph production were 13.9, 12.06 and 15.12 nymphs, mean total nymph production were 389.68, 318.23 and 214.45 nymphs, mean sex ratio were 70, 71 and 89% and intrinsic rate of increase were0.157, 0.181 and 0.207 most suitable temperature for developmental reproduction of P. solenopsis.
mean total nymph production were 389.68, 318.23 and 214.45 nymphs, mean sex ratio were 70, 71 and 89% and intrinsic rate of increase were0.157, 0.181 and 0.207 most suitable temperature for developmental reproduction of P. solenopsis.

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