Journal of Applied Entomology (2004) 128, 628-632

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A. Huerta, F. Robredo, J. Diez and J.A. Pajares (2004)
Life-cycle characteristics of Tetrastichus turionum, a parasitoid of the European pine shoot moth, Rhyacionia buoliana
Journal of Applied Entomology 128 (9-10), 628-632
Abstract: The life cycle of Tetrastichus turionum, a pupal endoparasitoid of the European pine shoot moth Rhyacionia buoliana, was studied in Spain in the field, prior to its use as a potential biological control agent of this pest in Chile. T. turionum showed two generations acting on the same host generation. Adults from the overwintering generation emerged and dispersed from mid- to late spring and gave rise to a fast developing, current year generation. Adults of this generation emerged and oviposited in early to mid-summer, producing progeny that overwintered as fourth instar larvae inside their host. Both generations appeared highly synchronized to the presence of pupae in the host population. The role of decreasing day length in the induction of diapause is also discussed. Laboratory bioassays showed that T. turionum did not oviposit on R. buoliana larvae already parasitized by Orgilus obscurator, a major larval parasitoid, already introduced in Chile. The results reinforce the suitability of T. turionum as a promising parasitoid that would complement O. obscurator in the biological control of European pine shoot moth.
(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): Julio Diez, Juan A. Pajares

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution


Pest and/or beneficial records:

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


Rhyacionia buoliana Spain (continental)
Rhyacionia buoliana Chile (continental)
Orgilus obscurator (parasitoid) Rhyacionia buoliana Chile (continental)
Baryscapus turionum (parasitoid) Rhyacionia buoliana Spain (continental)