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Entomophaga

, Volume 38, Issue 3, pp 327–333 | Cite as

In vitro rearing ofOoencyrtus pityocampae [Hym., Encyrtidae], an egg parasitoid ofThaumetopoea pityocampa [Lep., Thaumetopoeidae]

  • L. Masutti
  • A. Battisti
  • N. Milani
  • M. Zanata
  • G. Zanazzo
Article

Abstract

Ooencyrtus pityocampae (Mercet) is a polyphagous egg parasitoid, known mainly as an egg parasitoid of the Pine Processionary Caterpillar,Thaumetopoea pityocampa (Denis & Schiffermüller), a pest of pines in Southern Europe and in the Mediterranean region. Rearing on artificial medium was recently undertaken, and after a large screening of both materials and techniques available for this aim, a PVC film and a medium devoid of insect material were found as suitable for the complete development ofO. pityocampae. The artificial eggs allowed the parasitoid to oviposit and to develop up to the adult stage. Five adults (2 males and 3 females) were obtained. Development was slower than that observed in natural hosts. Two out of three females laid viable eggs in both natural and artificial eggs.

Key-Words

egg parasitoid artificial eggs artificial medium 

Résumé

Ooencyrtus pityocampae (Mercet) est un parasitoïde polyphage, connu principalement comme parasitoïde oophage de la processionnaire du pin,Thaumetopoea pityocampa (Denis & Schiffermüller), un défoliateur des pins dans l'Europe méridionale et dans la région méditerranéenne. L'élevagein vitro a été entrepris récemment après un large examen des techniques et des matériels à disposition. Un film en PVC et un milieu dépourvu de «matériel insecte» ont permis d'obtenir le développement complet deO. pityocampae, de la ponte jusqu'à l'adulte. On a obtenu 5 adultes (2 mâles et 3 femelles). La durée du développement a été plus élevée dans les œufs artificiels que dans les hôtes naturels. Deux femelles sur trois ont pondu soit dans les œufs artificiels soit dans les œufs des hôtes naturels.

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Copyright information

© Lavoisier Abonnements 1993

Authors and Affiliations

  • L. Masutti
    • 1
  • A. Battisti
    • 1
  • N. Milani
    • 2
  • M. Zanata
    • 1
  • G. Zanazzo
    • 1
  1. 1.Istituto di Entomologia agrariaUniversità di PadovaPadovaItalia
  2. 2.Dip. Biologia Applicata alla Difesa delle PianteUniversità di UdineUdineItalia

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