Archive: Published Articles
ENVIRONMENT AND ECOLOGY
Interdisciplinary International Science Journal
Volume 41 (2023)
Issue 3C
Page No. 1947
Authors:
Sneha Tiwari, Sonali Deole
Environment and Ecology 41 (3C): 1947—1952, July—September 2023
Article DOI: https://doi.org/10.60151/envec/UCOB3407
ISSN 0970-0420
Life Table Analysis of Fall Armyworm, Spodoptera
frugiperda (J. E. Smith) (Lepidoptera : Noctuidae)
on Maize Crop
Sneha Tiwari, Sonali Deole
Received 1 April 2023, Accepted 16 June 2023, Published on 4 September 2023
ABSTRACT
Life table of Spodoptera frugiperda on maize was undertaken to study the different population growth statistics. The results on number of individuals survived during development revealed that there was 12.32% mortality during pupal stage. The number that survived from 100 eggs to adult emergence was 42 individuals. Females contributed highest number of progeny (mx =2285) in the life cycle on the 40th day of pivotal age. The net reproductive potential (Ro) obtained was 470.66 females with the mean length of generation period (Tc) 33.46 days. The innate capacity for increase (rm) and finite rate of increase (λ) were found to be 0.183 and 1.201 females/day, respectively.
Keywords Innate capacity, Life fecundity table, Maize, Mortality, Pivotal age.