Vol. 6, Issue 5 (2018)
Biology of Spodoptera litura Fabricius on cabbage
Author(s): Rabari PH, Chaudhari SJ, Chaudhary NJ and Dodia DA
Abstract: The investigations on biology were carried out in the laboratory of Department of Entomology, C. P. College of Agriculture, S.D. Agricultural University, Sardarkrushinagar during 2013-14. An average length and breadth of eggs measured to be 0.58 + 0.02 mm and 0.49 + 0.02 mm, respectively. An average hatching percentage and incubation period were 93.16 ± 4.33 per cent and 3.48 + 0.77days, respectively. The larva of S. litura passed through six larval instars. The average length of the first, second, third, fourth, fifth and sixth instar larva was 1.48 + 0.11, 3.78 + 0.10, 10.52 + 0.33, 18.75 + 0.61, 26.30 + 0.81 and 35.32 + 0.87 mm, respectively, while the average breadth of the first, second, third, fourth, fifth and sixth instar larva was 0.32 + 0.04, 0.72 + 0.06, 1.38 + 0.10, 2.19 + 0.10, 2.96 + 0.15 and 4.24 + 0.17 mm, respectively. The length and breadth of pre-pupa measured to be27.65 + 1.35 and 3.91 + 0.18 mm, respectively. Male pupal length and breadth were 19.20 + 0.93 and 6.01 + 0.36 mm, respectively. While, female pupal length and width measured to be19.39 + 0.93 and 6.28 + 0.45 mm, respectively. The average developmental period of first, second, third, fourth, fifth and sixth instars larva was 3.20 + 0.41, 2.96 + 0.73, 3.36 + 0.64, 3.04 + 0.79, 3.28 + 0.46 and 2.76 ± 0.44 days, respectively with a total larval period of 17.88 + 1.51 days. An average developmental period of pre-pupa was 1.56 + 0.51 days. An average developmental period of male and female pupa was 8.24 + 0.93 and 9.52 ± 0.96 days, respectively. An average length and breadth of adult male measured as19.46 + 0.98 mm and 38.34 ± 0.76 mm, respectively while, in case of female it measured to be19.61 + 1.03 mm and 38.77 ± 0.70 mm, respectively. An average pre-oviposition, oviposition and post-oviposition period were 1.52 + 0.51, 7.72 + 1.37 and 1.48 + 0.71 days, respectively. An average longevity of male and female were 8.32 + 1.31 and 10.36 + 1.25 days, respectively and total life period of male and female were 36.28 ± 2.32 and 38.24 ± 2.52 days, respectively. The fecundity of female recorded as 2267.92 ± 175.97eggs. Sex ratio of male: female was recorded as 1: 1.25.
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How to cite this article:
Rabari PH, Chaudhari SJ, Chaudhary NJ, Dodia DA. Biology of Spodoptera litura Fabricius on cabbage. Int J Chem Stud 2018;6(5):1700-1705.
