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Mass rearing of the spotted bollworm, Earias vittella (Lepidoptera: Noctuidae) on an artificial diet

Published online by Cambridge University Press:  28 February 2007

G.P. Gupta ,
S. Rani ,
A. Birah  and
M. Raghuraman
G.P. Gupta*
Affiliation:
Division of Entomology, Indian Agricultural Research Institute, New Delhi, 110012, India
S. Rani
Affiliation:
Division of Entomology, Indian Agricultural Research Institute, New Delhi, 110012, India
A. Birah
Affiliation:
Division of Entomology, Indian Agricultural Research Institute, New Delhi, 110012, India
M. Raghuraman
Affiliation:
Division of Entomology, Indian Agricultural Research Institute, New Delhi, 110012, India
*
*E-mail: [email protected]
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Abstract

An artificial diet was developed for mass rearing of the spotted bollworm Earias vittella (Fabricius) in environmentally controlled conditions (27±1°C, 65±5% R. H. and 16:8 h scoto/photophase). The ingredients for 1 l of diet consisted of soybean (Glycine max) flour (60.0 g), chickpea (Cicer arietinum var. kabuli) flour (58.0 g), wheatgerm (16.0 g), dried yeast powder (16.0 g), casein (8.0 g), l-ascorbic acid (2.4 g), cholesterol (0.4 g), methyl-p-hydroxybenzoate (0.4 g), sorbic acid (2.4 g), streptomycin sulphate (0.4 g), agar–agar (16.0 g) and distilled water (820 ml). The artificial diet developed showed a higher development index (3.58) and a higher survival rate (83.4%) compared to the most preferred natural food (okra pods), for which these parameters were 3.09 and 65.0%, respectively. All the ingredients of the diet are easily available and inexpensive. The cost of 1 l of the diet, on which 400 larvae can be reared, is approximately US$ 2.00.

Keywords

Earias vittellaartificial dietmass rearingokra pod
Type
Short Communication
Information
International Journal of Tropical Insect Science , Volume 25 , Issue 2 , June 2005 , pp. 134 - 137
Copyright
Copyright © ICIPE 2005

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