Imperial College London
Michael J Jeger

Michael J Jeger

Faculty of Natural Sciences, Department of Life Sciences (Silwood Park)

Emeritus Professor of Horticulture
 
 
 
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Contact

 

+44 (0)1398 332 941m.jeger Website

 
 
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Location

 

Home working 13 Brook Street, Bampton, Devon EX16 9LUSilwood ParkSilwood Park

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Summary

 

Publications

Citation

BibTex format

@article{Brown:2017:10.3390/f8030087,
author = {Brown, N and Jeger, M and Kirk, S and Williams, D and Xu, X and Pautasso, M and Denman, S},
doi = {10.3390/f8030087},
journal = {Forests},
title = {Acute Oak Decline and Agrilus biguttatus: The Co-Occurrence of Stem Bleeding and D-Shaped Emergence Holes in Great Britain},
url = {http://dx.doi.org/10.3390/f8030087},
volume = {8},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Acute Oak Decline (AOD) is a new condition affecting both species of native oak,Quercus robur and Quercus petraea, in Great Britain. The decline is characterised by a distinctiveset of externally visible stem symptoms; bark cracks that “weep” dark exudate are found abovenecrotic lesions in the inner bark. Emergence holes of the buprestid beetle, Agrilus biguttatus areoften also seen on the stems of oak within affected woodlands. This investigation assesses the extentto which the external symptoms of these two agents co-occur and reveals the spatial and temporalpatterns present in affected woodland. Annual monitoring in eight affected woodlands showed thatstem bleeding and emergence holes frequently occur on the same trees, with new emergence holessignificantly more likely to occur when trees already have stem bleeds. Trials with coloured prismtraps confirm A. biguttatus was present at all experimental sites. Beetle emergence is linked primarilyto a few heavily declining trees, indicating that susceptibility may vary between hosts and that thosewith reduced health may be predisposed to AOD. Stem bleeds occur on trees in close proximity tothe locations of trees with exit holes.
AU  - Brown,N
AU  - Jeger,M
AU  - Kirk,S
AU  - Williams,D
AU  - Xu,X
AU  - Pautasso,M
AU  - Denman,S
DO  - 10.3390/f8030087
PY  - 2017///
SN  - 1999-4907
TI  - Acute Oak Decline and Agrilus biguttatus: The Co-Occurrence of Stem Bleeding and D-Shaped Emergence Holes in Great Britain
T2  - Forests
UR  - http://dx.doi.org/10.3390/f8030087
UR  - http://hdl.handle.net/10044/1/55554
VL  - 8
ER  -
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