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Use of the egg parasiteEdovum puttleri [Hym.: Eulophidae] in an IPM system developed for Colorado potato beetle [Col.: Chrysomelidae] control on potatoes, Beltsville, Maryland

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Abstract

Edovum puttleri Grissell in conjunction with the fungal pathogenBeauveria bassiana (Balsamo) Vuillimen, a β-exotoxin ofBacillus thuringiensis varthuringiensis Berliner, and the insect growth regulator triflumuron (Alsystin 4F) were evaluated in a pest management system to control Colorado potato beetle,Leptinotarsa decemlineata (Say). Soil treatments ofB. bassiana had no significant impact on emerging Colorado potato beetle adults. Foliar applications of the β-exotoxin and triflumuron significantly reduced 1st larval generation. Releases ofE. puttleri resulted in 56 % egg mass parasitization, significant reduction of 2nd generation larvae, and significantly higher potato yields.Leptinotarsa texana (Schaeffer) was successfully used as an alternate host for production ofE. puttleri.

Résumé

Edovum puttleri a été étudié concurremment avec le germe pathogèneBeauveria bassiana (Balsamo) Vuillimen, une β-exotoxine deBacillus thuringiensis var.thuringiensis Berliner et un régulateur de croissance de l'insecte, le triflumuron (Alsystin 47) dans un système intégré de lutte pour lutter contre le doryphoreLeptinotarsa decemlineata (Say). Les traitements du sol parB. bassiana n'ont pas d'impact significatif sur l'apparition des adultes du doryphore. Des applications foliaires de β-exotoxine et de triflumuron réduisent d'une façon significative la première génération larvaire. Les lâchers deE. puttleri ayant pour résultat un parasitisme de 56 % de la masse des œufs entraînent une réduction significative des larves de la seconde génération et une production plus forte de pommes de terre;Leptinotarsa texana (Schaeffer) a été employé avec succès comme hôte de remplacement pour la production deE. puttleri.

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Authors and Affiliations

  1. Beneficial Insects Laboratory, Plant Science Institute, Agricultural Research Service, USDA Beltsville, 20705, Maryland

    R. F. W. Schroder

  2. Department of Entomology, University of Maryland, College Park, Maryland

    M. M. Athanas

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  1. R. F. W. Schroder
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  2. M. M. Athanas
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Schroder, R.F.W., Athanas, M.M. Use of the egg parasiteEdovum puttleri [Hym.: Eulophidae] in an IPM system developed for Colorado potato beetle [Col.: Chrysomelidae] control on potatoes, Beltsville, Maryland. Entomophaga 34, 193–199 (1989). https://doi.org/10.1007/BF02372668

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  • DOI: https://doi.org/10.1007/BF02372668

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