Bulletin of Entomological Research (2008) 98, p. 28515 (Gariepy et al.)

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T.D. Gariepy, U. Kuhlmann, C. Gillott and M. Erlandson (2008)
Does host plant influence parasitism and parasitoid species composition in Lygus rugulipennis? A molecular approach
Bulletin of Entomological Research 98 (3), 28515-28515
Abstract: Lygus Hahn plant bugs (Hemiptera: Miridae) are serious pests of a wide variety of economically important crops in North America. European Peristenus digoneutis Loan and P. relictus Ruthe (Hymenoptera: Braconidae) are being considered for release in Canada as part of a classical biological control program for Lygus. The attractiveness of different host plants to European Peristenus has not been addressed, but may be an important consideration prior to parasitoid release. Lygus rugulipennis Poppius nymphs were collected in the Northern Temperate Atlantic (NTA) ecoregion on red clover (Trifolium pratense L.; Fabaceae) and chamomile (Matricaria recutita L.; Asteraceae), and in the Western European Broadleaf Forest (WEBF) ecoregion on red clover and alfalfa (Medicago sativa L.; Fabaceae). Parasitism levels and parasitoid species were determined using a multiplex PCR assay for P. digoneutis, P. relictus, and P. pallipes Curtis. Mean parasitism levels in L. rugulipennis were 45-49% in the NTA ecoregion and 25-32% in the WEBF ecoregion. However, in neither ecoregion were parasitism levels and parasitoid species compositions significantly different in nymphs from different host plant species. Furthermore, multiparasitism was low despite the fact that P. digoneutis and P. relictus share the same host species.
Link to article at publishers website
Database assignments for author(s): Tara Dawne Gariepy, Martin A. Erlandson, Ulrich Kuhlmann

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

Pest and/or beneficial records:

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

Lygus rugulipennis Canada (east)
Peristenus digoneutis (parasitoid) Lygus rugulipennis
Peristenus relictus (parasitoid) Lygus rugulipennis