Temperature-Based Life History and Life Table Parameters of the Two Spotted-Spider Mite (Acari: Tetranychidae) on White Frangipani

Document Type : Original Article

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Vegetable and Aromatic Plant Mites Department, Plant Protection Research Institute, Agricultural Research Centre, Dokii, Giza, Egypt

Abstract

The effect of three constant temperatures on life history and life table parameters of the two spotted-spider mite, Tetranychus urticae Koch on White Frangipani (Plumeria alba) leaves was estimated under laboratory conditions. The two spotted-spider mite was reared on units made of P. alba leaves at 20, 25 and 30±2 °C and 70±5% relative humidity. Mites successfully completed their development and reproduced at all tested temperatures, where the developmental time, oviposition period, adult longevity and life span decreased with increasing temperatures, while daily oviposition rate and fecundity increased with increasing temperatures. The high reproduction rate of 106.00 eggs/ female suggested that the high temperature degree (30ºC) was assessed to be one of the best degrees to help the individuals to perform and oviposit faster in regard to the acceleration of life cycle period to 6.03 and 4.63 days respectively in female and male. The results indicated that T. urticae had a wide range of temperature for its development, however, the highest intrinsic rate of natural increase (rm = 0.3057) occurred at 30 ºC, where the population increased fastest at this temperature.

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