Invasive Species Compendium

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Abstract Full Text

Biology of fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) on sugarcane.

Abstract

The present study was undertaken during kharif 2019 to know the biology of fall armyworm, Spodoptera frugiperda on sugarcane. The results revealed that mean incubation period were 2.47±0.051 days. The larva passed through six different instars. The mean duration of first, second, third, fourth, fifth and sixth instar of fall armyworm was 2.48 ± 0.075, 2.45 ± 0.083, 2.73 ± 0.051, 2.35 ± 0.054, 3.28 ± 0.098 and 3.51 ± 0.075 days, respectively. The total larval period lasted for about 15 to 19 days with a mean of 16.82 ± 0.236 days. The mean pre pupal and pupal period were 2.55 ± 0.054 and 8.22 ± 0.075 days, respectively. In the present study, mean longevity of female and male moth were 11.36 ± 0.314 days and 7.59 ± 0.137 days, respectively. The pre oviposition, oviposition and post oviposition period ranged between 3 to 4, 3 to 4 and 4 to 5 days with a mean of 3.48 ± 0.054, 3.39 ± 0.240 and 4.48 ± 0.075 days, respectively. The number of eggs laid by female moth of S. frugiperda developed from larva fed on the leaves of sugarcane ranged from 413 to 654 eggs with a mean of 544.18 ± 12.53 and sex ratio of male to female was found to be 1: 1.2 when larvae fed with sugarcane. These results help in understanding the biology of S. frugiperda fed on sugarcane.