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Life tables and the intrinsic rate of increase of Earias vittella (Lepidoptera: Noctuidae) reared on different hosts

Published online by Cambridge University Press:  28 February 2007

N.S. Satpute ,
S.D. Deshmukh ,
N.G.V. Rao  and
S.A. Nimbalkar
N.S. Satpute*
Affiliation:
Insect Biotech Laboratory, Department of Agricultural Entomology, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India
S.D. Deshmukh
Affiliation:
Insect Biotech Laboratory, Department of Agricultural Entomology, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India
N.G.V. Rao
Affiliation:
Insect Biotech Laboratory, Department of Agricultural Entomology, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India
S.A. Nimbalkar
Affiliation:
Insect Biotech Laboratory, Department of Agricultural Entomology, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India
*
*Email: [email protected]
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Abstract

Life table studies of Earias vittella (Fabricius) on different hosts in the Insect Biotech Laboratory, Department of Entomology, Dr PDKV Akola, revealed that survival (lx) of immature stages of E. vittella on different hosts was 0.65 on okra, 0.56 on cotton, 0.54 on semi-synthetic diet and 0.51 on mesta. The net reproductive rate (Ro), at the end of each generation, of E. vittella was 81.91 on okra, 56.70 on cotton, 53.02 on semi-synthetic diet and 36.63 on mesta (Hibiscus cannabinus L.). The net reproductive rate (Ro) followed the same order as the survival rate (lx) on the different hosts. The innate capacity for increase in numbers (rm) ranged between 0.0888 and 0.1334 females/female/day. In descending order, the rm values on different hosts were okra (0.1334), cotton (0.1111), semi-synthetic diet (0.1029) and mesta (0.0888).

Keywords

life tableshost plantsurvival rateinnate capacity for increasenet reproductive rateEarias vittellaokracottonHibiscus cannabinustable de vieplante hôte
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 25 , Issue 2 , June 2005 , pp. 73 - 79
Copyright
Copyright © ICIPE 2005

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