STUDIES OF EFFECT OF Corcyra EGGS OBTAINED FROM DIFFERENT REARING MEDIA ON THE DEVELOPMENT OF Chrysoperla zastrowi arabica (HENRY)

摘要

A laboratory experiment was conducted to study the effect of Corcyra eggs obtained from different rearing media on the development of Chrysoperla zastrowi arabica (Henry). The results revealed that the treatment differences regarding feeding potentialare non-significant indicating equal preference by the predatory grub to various eggs. The larval period and larval weight of all the three instar grubs were in the range of 1.9 to 3.3 days and 1.65 to 8.17 tag, respectively in all the treatments. The maximum weight of pupa of Chrysoperla was observed in T_6 (7.39 mg) and minimum in T_4 (5.97 mg). Regarding the period of pupal stage, the treatment differences were non significant. Regarding per cent adult emergence, the statistical differences among all treatments were non significant. The maximum number of females were observed in T_1 (1:1.53) and minimum in T_4 (1:0.87). The maximum and minimum weights of both female and male were observed in T_3 (3.87 mg and 3.51 mg) and T_8 (3.68 and 3.38 mg). Longevity of female was in the range of 6.40 to 7.73 and male was 4.87 to 5.83 days, in different treatments.