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Importance of physical properties of artificial diet for the pink stem borer, Sesamia inferens Walker

Published online by Cambridge University Press:  19 September 2011

S. Lingappa
S. Lingappa
Affiliation:
Department of Entomology, University of Agricultural Sciences, Bangalore-560024, India
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Abstract

Moisture content, hardness or consistency, and age of diet were some of the properties studied for their effect on survival, growth and development of Sesamia inferens Walker. Survival of larvae was maximum on diet with 66.1% moisture. Increase or decrease in moisture resulted in excessive stickiness or dryness to the diet. Reduction in moisture content in the artificial diet was dependent on particle size of bulk constituent. Proper consistency or hardness resulting from 1.8 and 2.2% agar permitted higher number of larvae to reach pupal stage. Diet stored for 24 hr and 48 hr provided favourable conditions for the early instar larvae to establish on the diet.

Résumé

Les effects des teneuren eau, dureté ou consistance aussi qué l'âge de l'alimentation sur la croissance et développement de Sesamia inferens ont été étudiés. La survivance des larves était maximum au cas où la teneur d'eau de la diète était 66.1%. Quand la teneur d'eau est plus haut ou plus bas que cela, elle résulte en une diète trop adhésive ou trop sèche. Une réduetion de la teneur d'eau dans la diète synthétique (artificiella) était dependant sur la grosseur des particules de l'élément majeur. Une consistance propre résultant d'agar (1.8 to 2.2%) permet un plus grand nombre de larves à former des pupae. Une alimentation viellies pendant 24 h et 48 h donne des conditions favorables pour les larves de premier instar pour mieux s'etablir sur le régime.

Keywords

Sesamia inferens artificial dietphysical propertiesrearing
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 8 , Issue 1 , February 1987 , pp. 65 - 69
Copyright
Copyright © ICIPE 1987

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References

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