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Reproductive performance of a harpactorine reduviid Rhynocoris fuscipes (Fabricius) (Heteroptera: Reduviidae) on three lepidopteran insect pests

Published online by Cambridge University Press:  19 September 2011

P. J. Edward George
P. J. Edward George
Affiliation:
Entomology Research Unit, St Xavier's College, Palayankottai-627 002, India, E-mail: [email protected]
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Abstract

The development, life table and intrinsic rate of natural increase of the reduviid predator Rhynocoris fuscipes (Fabricius) on Spodoptera litura Fab., Earias vittella Fab. and Corcyra cephalonica Stainton under laboratory conditions were constructed. Fecundity, longevity and minimum developmental period of the predator were dependent on the prey diet and decreased in the order: S. litura, E. vittella and C. cephalonica. The mean number of female progeny produced over the entire period (the gross reproductive rate) was 43.0, 37.5 and 32.5 on S. litura, E. vittella and C. cephalonica respectively. The net reproductive rate (Ro), intrinsic rate of increase (rc) and weekly multiplication rate were also highest on S. litura followed by E. vittella and C. cephalonica.

Résumé

On a étudié en conditions de laboratoire le développement et le taux intrinsèque d'accroissement naturel, et on a construit la table de vie pour le réduve prédateur, Rhynocoris fuscipes (Fabricius) maintenu sur Spodoptera litura Fab., Earias vittella Fab. et Cocyra cephalonica Stainton. La fécondité, la longévité et la période minimale de développement du prédateur étaient en fonction de la proie et décroissaient partant de S. litura, E. vittella et C. cephalonica. Les moyennes respectives de femelles d'une progéniture au cours d'un cycle (taux brut de reproduction) étaient de 43, 0; 37, 5 et 32, 5 sur S. litura, E. vittella et C. cephalonica. Le taux net de reproduction (RO), le taux intrinsèque d'accroissement (rc)et le taux de multiplication hebdomadaire étaient aussi plusélevés sur S. litura suivi de E. vittella et C. cephalonica.

Keywords

Rhynocoris fuscipespredatory reduviidlife tablebiological controlSpodoptera lituraEarias vittellaCorcyra cephalonicaRhynocoris fuscipesréduve prédateurtable de vielutte biologiqueforeursSpodoptera lituraEarias vittellaCorcyra cephalonica
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 20 , Issue 4 , December 2000 , pp. 269 - 273
Copyright
Copyright © ICIPE 2000

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