Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10252186 | Urban Forestry & Urban Greening | 2014 | 6 Pages |
Abstract
In reviewing the occurrence of the bark beetle Dendroctonus micans in the Czech Republic over the past 100 years, we found that D. micans has been detected at 80 localities with elevations ranging from 158 to 1350Â m a.s.l. During 2011-2012, we recorded three local outbreaks on Picea pungens, two of which involved isolated trees in urban areas between houses (always on sites <1Â ha). From these locally abundant populations, 125 adults, 5 pupae, and 73 larvae of D. micans were obtained and dissected. Among these dissected specimens, nematodes in the hemolymph were detected in only 5 adults and 11 larvae. No other parasites or pathogens were found in the D. micans specimens. Low numbers of the beetle Rhizophagus grandis, which is a specific predator of D. micans, were detected, and none contained parasites or pathogens. Locally D. micans could constitute a new limited threat to urban trees, including P. pungens, in the Czech Republic and Central Europe. Special attention should be given to solitary P. pungens trees; if D. micans is detected on these trees, defensive measures must be taken to protect uninfested trees in the vicinity.
Related Topics
Life Sciences
Agricultural and Biological Sciences
Forestry
Authors
Karolina LukáÅ¡ová, Jaroslav HoluÅ¡a, MiloÅ¡ KnÞek,