Emily
C. Ogburn ; Ricardo Bessin ; Christine Dieckhoff ; Rachelyn Dobson ;
Matthew Grieshop ; Kim A. Hoelmer ; Clarissa Mathews ; Jennifer Moore ;
Anne L. Nielsen ; Kristin Poley ; John M. Pote ; Mary Rogers ; Celeste Welty ; James F. Walgenbach
- 1 Citations
Abstract
Understanding
native natural enemy impacts on the invasive brown marmorated stink
bug, Halyomorpha halys (Stål), offers insight into the population
dynamics of this invasive pest and the potential for biological control.
This two-year study offers a broad-scale assessment of mortality
factors affecting sentinel and naturally laid H. halys eggs in
agroecosystems in the pest's invaded range in eastern North America.
Predation and parasitism rates varied among states and crops, but
overall were low. Average maximum levels of biological control were
estimated to be about 19% and 20% in 2013 and 2014, respectively. Of the
eggs destroyed by natural enemies, chewing predation was the most
prevalent. Parasitism by native parasitoids was very low, with adult
parasitoids emerging from 1 individual parasitoid emerge from a H. halys
egg mass. Parasitism of H. halys eggs by a complex of parasitoids is an
important population regulation factor in its native Asian range, but
this study found that parasitoids native to eastern US agroecosystems do
not provide that service in this introduced region. The greatest
potential for biological control of H. halys may be via classical
biological control by the Asian parasitoid Trissolcus japonicus
(Ashmead), which has recently been detected in both the eastern and
western US.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 39-51 |
| Number of pages | 13 |
| Journal | Biological Control |
| Volume | 101 |
