Biology of melon fruity fly (Bactrocera cucurbitae) on bitter gourd (Momordica charantia L.)

The mean incubation period varied from 1.7±0.12 days in 2002 and 1.4±0.16 days in 2003 at temperature range from 31.9 - 32.2°C in 2002 and 27.3 - 30.8°C while, relative humidity was 56.7 - 62.8% during 2002 and 60.6 - 81.2% during 2003. There are total larval periods was 5.9±0.979 and 5.19 ± 0.245 days while, pupal period was 7.3 ± 0.23 and 7.03 ± 0.245 days during both the years 2002 and 2003 and in the month of June and July. The average longevity of male was 12.74 ± 2.83 and 13.09 ± 2.37 days whereas, that of female was 15.03 ± 3.14 and 15.56 ± 2.67 days during both the years in June and July. The duration of total life cycle was 15.5 ± 1.952 and 13.66 ± 2.482 days during 2002 and 2003 in June and July.