Developmental and Reproductive Biology ofPlanococcus minor(Hemiptera: Pseudococcidae) Under Constant Temperatures

Antonio W. Francis, Moses T. K. Kairo, Amy L. Roda
2012 Florida Entomologist  
Effect of temperature on the developmental and reproductive biology of the passionvine mealybug, Planococcus minor (Maskell) (Hemiptera: Pseudococcidae), was investigated on sprouted potatoes. P. minor was able to develop and complete its life cycle at 20, 25, and 29 °C. No eggs eclosed at 15 and 35 °C. The developmental time from egg to adult female was approximately 49 d at 20 °C, 31 d at 25 °C, and 27 d at 29 °C. Between 20 and 29 °C, 58-71% of eggs survived to adulthood. Female mealybugs
more » ... Female mealybugs made up 60-73% of the adult populations in the 3 temperature treatments. Preoviposition and oviposition times decreased as the temperature increased. Females reproduced sexually and produced the highest number of eggs (270 eggs/female) at 20 °C. Adult female longevity declined from 34 d at 20 °C to 19-22 d at the 2 higher temperatures. Adult males were short-lived and their longevity declined with increasing temperature. At 25 °C, the gross reproductive rate (GRR) and net reproductive rate (R o ) were estimated at 445.7 / and 325.4 /, respectively, the generation time (T G ) was 39.5 d, the intrinsic rate of increase (r m ) was 0.147 (//d), the finite rate of increase (λ) was 1.158 (//d), and the doubling time (DT) was 4.7 d. The ability of P. minor to develop, survive, and reproduce successfully from 20 to 29 °C suggests that the mealybug has the potential to develop and establish in climatic zones that fall within this temperature range.
doi:10.1653/024.095.0209 fatcat:2ndjgcqfnra57ckeynssh5u77u