Abstract
The biological control potential ofEdovum puttleri Grissell, an exotic egg parasite ofLeptinotarsa decemlineata (Say), was examined in experimental potato plots. The parasite does not overwinter in Maryland, but through annual inoculative releases it consistently parasitized Colorado potato beetle (CPB) egg masses throughout the season. Approximately 50% of all egg masses collected were parasitized and maximum parasitism byE. puttleri occurred in egg masses produced by first generation adults.Edovum puttleri reproduced and maintained itself in potato plots for 15 weeks. The random sampling of CPB egg masses to evaluate the parasite in the field is described.
Résumé
L'efficacité potentielle d'Edovum puttleri Grissell, parasite oophage exotique deLeptinotarsa decemlineata a été examinée dans des parcelles expérimentales de pomme de terre. Le parasite n'hiverne pas au Maryland, mais par un lâcher inoculatif annuel il parasite les pontes du Doryphore durant la saison. Cinquante p. 100 environ des pontes récoltées étaient parasitées et le maximum de parasitisme parE. puttleri s'observait dans les pontes dues aux adultes de la première génération.E. puttleri se reproduit et se maintient dans les parcelles de pomme de terre durant 15 semaines. L'échantillonnage au hasard des pontes du Doryphore pour évaluer le parasitisme dans les champs est décrit.
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Schroder, R.F.W., Athanas, M.M. Potential for the biological control ofLeptinotarsa decemlineata [Col.: Chrysomelidae] by the egg parasite,Edovum puttleri [Hym.: Eulophidae] in Maryland, 1981–84. Entomophaga 34, 135–141 (1989). https://doi.org/10.1007/BF02372597
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DOI: https://doi.org/10.1007/BF02372597