Measuring the host preference of parasites: An aid in evaluating biotypes ofAnagrus epos [Hym.: Mymaridae] |
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| Authors: | C H Pickett L T Wilson D L Flaherty D Gonzaiez |
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| Institution: | (1) Department of Entomology, University of California, 95616 Davis, California, USA;(2) Present address: Environmental Monitoring and Pest Management, California Department of Food and Agriculture, 1220 N St., 95814 Sacramento, CA, USA;(3) Present address: Cooperative Extension, Agri. Bldg, Couty Civic Center, University of California, 93291 Visalia, California, USA;(4) Present address: Division of Biological Control, Department of Entomology, University of California, 92521 Riverside, California, USA |
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| Abstract: | Populations ofAnagrus epos Girault are being imported and evaluated for the biological control of variegated grape leafhopper,Erythroneura variabilis Beamer, a newly introduced pest of grapes in central California. To distinguish different biotypes, a field test was developed
that quantifies host preference.E. epos collected from geographically isolated regions of western United States and northern Mexico showed different levels of preference
towards the variegated leafhopper and its close relative the grape leafhopper,Erythroneura elegantula Osborn, a native to central California. Host preference values may aid in the identification of relased biotypes using leafhopper
eggs on leaves sampled from release sites.
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| Keywords: | Anagrus epos grapes Erythroneura biological control evaluation identification |
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