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

  • G.P. Gupta (a1), S. Rani (a1), A. Birah (a1) and M. Raghuraman (a1)
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.

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International Journal of Tropical Insect Science
  • ISSN: 1742-7584
  • EISSN: 1742-7592
  • URL: /core/journals/international-journal-of-tropical-insect-science
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