Temperatures vs development and fecundity of Myzus persicae sulzer Chanu Laishram Chitra, Gupta M. K.* Department of Entomology, College of Agriculture, Central Agricultural University, Imphal-790004 *Email: mkguptacau@yahoo.in
Online published on 29 August, 2014. Abstract Influence of six temperatures viz., 10°C, 15°C, 18°C, 20°C, 25°C and 30°C was studied on the development and fecundity of green peach aphid, Myzus persicae. The nymphal development was fastest at 25°C. The longest pre – reproductive (2.97 days), reproductive (31.8 days) and post – reproductive periods (2.03 days) was at extremely low temperature of 10°C compared to shorter duration of these parameters at optimum temperature of 25°C. The total life cycle decreased significantly with the increase in the temperature. Maximum fecundity was at 25°C (54.8 nymphs/female) and minimum was 22.8 and 32.4 nymph/female, respectively at 10°C and 15°C. Fecundity decreased at extreme high temperature of 30°C compared to 25°C. The nymphal body length, body width, antennal length and cornicle length were maximum at 25°C and minimum at 10°C. Top Keywords Myzus persicae, temperature, fecundity, nymph, reproduction. Top |