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Entomophaga

, Volume 36, Issue 2, pp 205–212 | Cite as

Long-term laboratory evaluation ofRogas lymantriae: A braconid endoparasite of the gypsy moth,Lymantria dispar

  • P. S. Grinberg
  • W. E. Wallner
Article

Abstract

Rogas lymantriae Watanabe was reared onLymantria dispar (L.) for 125 generations in the laboratory following importation from Japan. No deleterious effects of colonization were observed and one measured parameter, successful parasite emergence, significantly improved over time. Decreased density of the host or conspecific female parasites resulted in higher levels of parasitism and numbers of females in the next generation. During 3 different years, colony production was significantly increased with little difficulty to provide parasites for inoculative releases in the field.

Key-Words

Gypsy moth endoparasite Braconidae parasite rearing 

Résumé

Depuis son importation du Japon,Rogas lymantriae a été élevé surLymantria dispar (L.), en laboratoire durant 125 générations. Aucun effet néfaste n'a été observé et le paramètre mesuré: le succès de l'émergence du parasite, s'améliorait d'une manière significative chaque fois. Une densité croissante de l'hôte ou des parasites femelles conspécifiques avait pour résultat des niveaux plus élevés de parasitisme et du nombre de femelles dans la génération suivante.

Durant trois années différentes, la production augmentait d'une manière significative avec peu de difficulté pour produire les parasites nécessaires aux lâchers inoculatifs dans les champs.

Mots Clés

endophage du Bombyx disparate Braconidae élevage de parasite 

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Copyright information

© Lavoisier Abonnements 1991

Authors and Affiliations

  • P. S. Grinberg
    • 1
  • W. E. Wallner
    • 1
  1. 1.Center for Biological Control of Northeastern Forest Insects & DiseasesUSDA Forest Service, Northeastern Forest Experiment StationHamden

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