Influence of Herbivores on the Biology of Chrysoperla carnea Stephens

A laboratory study was conducted in the Biocontrol laboratory at Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, during Kharif season of 2010–2011, which assessed the influence of different cotton plant herbivores on the biological parameters of Chrysoperla carnea. The results revealed that the highest feeding potential was found on cotton aphids, followed by Helicoverpa (eggs and neonates), and nymphs of jassids 193.87, 179.53, and 142.74 numbers, respectively. The shortest larval duration was recorded on cotton aphids followed by Helicoverpa (eggs and neonates) as 9.40 and 10.80 days, respectively. Prolonged larval duration, pupal period, and incubation period were recorded on cotton jassids as 14.47, 6.80, 2.66 days, respectively. The highest fecundity was recorded on cotton aphids whereas, lowest fecundity on cotton jassids as 418.00 and 342.40 eggs/female, respectively. The longest adult longevity was found on cotton aphids.