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Reproductive Performance of a Harpactorine Reduviid Rhynocoris fuscipes (Fabricius) (Heteroptera: Reduviidae) on Three Lepidopteran Insect Pests

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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 plus élevés sur S. litura suivi de E. vittella et C. cephalonica.

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  1. Entomology Research Unit, St Xavier’s College, Palayankottai, 627 002, India

    P. J. Edward George

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  1. P. J. Edward George
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Correspondence to P. J. Edward George.

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George, P.J.E. Reproductive Performance of a Harpactorine Reduviid Rhynocoris fuscipes (Fabricius) (Heteroptera: Reduviidae) on Three Lepidopteran Insect Pests. Int J Trop Insect Sci 20, 269–273 (2000). https://doi.org/10.1017/S1742758400015629

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