Entomophaga

, Volume 24, Issue 2, pp 145–152 | Cite as

The relationship between host destruction and parasite reproductive potential inMuscidifurax raptor, M. zaraptor, andSpalangia endius [Chalcidoidea: Pteromalidae]

  • E. F. Legner
Article

Abstract

Highly significant correlations existed between parasite reproduction and host destruction statistics calculated for 3 hymenopterous parasites of muscoid flies,Muscidifurax raptorGirault & Sanders,M. zaraptorKogan & Legner, andSpalangia endiusWalker, ovipositing under varied environmentally controlled conditions. A consideration of an individual parasite's host destructive capacity is important in order to correctly evaluate the direct impact of periodic inundative releases in the field. In this study mortality resulting from host-feeding, probing and aborted parasitism averaged ca. 37, 28, and 31% forS. endius, M. raptor andM. zaraptor, respectively. The observation of such highly significant correlations with reproductive potential indicates a means for more accurate evaluation of field performance (hosts destroyed both reproductively and incidentally) in 3 useful species.

Keywords

Plant Pathology Field Performance Direct Impact Accurate Evaluation Reproductive Potential 

Résumé

Il existe des corrélations très significatives entre la reproduction potentielle des parasites et la destruction de l'hôte calculées pour 3 hyménoptères parasites des mouches muscoïdes,Muscidifurax raptorGirault & Sanders,M. zaraptorKogan & Legner, etSpalangia endiusWalker, pondant dans différentes conditions contrôlées de milieu. Il est important de considérer la capacité du parasite individuel pour la destruction de l'hôte pour que l'on puisse évaluer correctement l'impact direct des lâchers inondatifs périodiques dans la nature. L'observation de telles corrélations très significatives avec la reproduction potentielle indique un moyen pour une évaluation plus précise des résultats obtenus (hôtes détruits directement ou dont la reproduction est altérée) par 3 espèces utiles.

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Copyright information

© Le François 1979

Authors and Affiliations

  • E. F. Legner
    • 1
  1. 1.Department of EntomologyUniversity of CaliforniaRiversideUSA

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