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Entomophaga

, Volume 29, Issue 1, pp 63–71 | Cite as

Effects of parasitism byApanteles sagax [Hym.: Braconidae] on growth, food consumption and food utilization inSylepta derogata larvae [Lep.: Pyralidae]

  • Y. A. Duodu
  • F. F. Antoh
Article

Abstract

Laboratory studies were made of the growth, food consumption and food utilization by parasitized and unparasitizedSylepta derogata (F.) larvae. Growth was lower in parasitized than in unparasitized larvae. Parasitized larvae consumed significantly less food than unparasitized larvae. The dry weightfresh weight consumption index did not differ significantly between the 2 types of larva. Parasitism increased the efficiency of digestion but had no effect on the efficiencies of conversion of ingested and digested food to body matter.

Keywords

Plant Pathology Laboratory Study Food Consumption Food Utilization Frais 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

On a étudié en laboratoire la croissance, la consommation et l'utilisation des aliments de larves deSylepta derogata (F.) parasitées ou non. La croissance est moindre chez les larves parasitées et elles consomment significativement moins de nourriture que les chenilles non parasitées. L'indice de consommation poids sec-poids frais n'est pas différent de manière significative chez les 2 catégories de larves. Le parasitisme diminue l'efficacité digestive mais n'a pas d'influence sur l'efficacité de la conversion des aliments ingérés et digérés en matières corporelles.

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Copyright information

© Lavoisier Abonnements 1984

Authors and Affiliations

  • Y. A. Duodu
    • 1
  • F. F. Antoh
    • 2
  1. 1.Commonwealth Institute of Biological Control, West African Substationc/o Crops Research InstituteKumasiGhana
  2. 2.Department of Biological SciencesUniversity of Science and TechnologyKumasiGhana

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