Development and Fecundity of <i>Pseudococcus cryptus </i>(Hempel) Is Temperature-Dependent

This experiment examines the impact of temperature on the physiology and reproductive output of <i>Pseudococcus cryptus</i> (Hempel), a major vector of areca palm yellow leaf disease (APYLD). <I>P</I>. <i>cryptus</i>, mealybug, a vector of areca palm velarivirus 1 (APV1), which causes areca palm yellow leaf disease (AYLD), it has a toxic effects on plantations in Hainan, China. Keeping in view, the financial value of areca palms in Hainan, optimal pest management is crucial. An integrated pest management (IPM) strategy such as natural enemies and insecticides and temperature directly affects <i>P. cryptus</i> development and reproduction. Research indicates that <i>P. cryptus</i> shows the highest average egg production of <i>P. cryptus</i> was observed at 25°C (182 eggs per female), and 30°C (117 eggs per female), and in the same line the average viability of the entire nymphal was highest at 25-30°C, outside this range; decline in the two parameters were observed due to thermal stress. The minimum days recorded for female development was 29.9 d at 25°C, and the female developmental periods extended up to 37.3 d to 44.1 d at 35°C and 20°C, respectively, due to a decrease in metabolic rates. This extends larval vulnerability to natural enemies and chemical control. By monitoring temperatures in the 25-30°C range, agricultural technician can forecast potential pest surges, such as those from the spindle bug or leaf-eating caterpillars common in areca palms, enabling proactive scouting and targeted interventions to curb infestations early.