BioControl (2008) 53, 829-839

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Ambra Quacchia, Seiichi Moriya, Giovanni Bosio, Ivano Scapin and Alberto Alma (2008)
Rearing, release and settlement prospect in Italy of Torymus sinensis , the biological control agent of the chestnut gall wasp Dryocosmus kuriphilus
BioControl 53 (6), 829-839
Abstract: Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae), is one of the most serious pests attacking chestnut trees. Recently it was incidentally introduced into Northwest Italy and it is now spreading throughout Europe. This pest was successfully controlled in Japan by introducing a parasitoid, Torymus sinensis Kamijo (Hymenoptera: Torymidae), from China's mainland. Following this successful experience, the parasitoid was introduced into Italy from Japan. One year of preliminary studies led to a successful method of rearing imported galls with a synchronization between the parasitoid's emergence and the presence of the target galls in the field. In two consecutive years, a total of 2,117 individuals were released in several sites covering most of the infested area. There are encouraging data about the settlement of the parasitoid and its synchrony with the host's cycle: from about 64,000 host galls collected in the field over 200 T. sinensis were reared. The role of native parasitoids associated with the chestnut gall pest in its Italian distribution range is also discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Alberto Alma, Seiichi Moriya

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
rearing/culturing/mass production
classical biocontrol/new introduction

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Dryocosmus kuriphilus Chestnut (Castanea) Italy
Torymus sinensis (parasitoid) Dryocosmus kuriphilus Chestnut (Castanea) Italy