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ID 849
file
title alternative
Effect of feeding by Monochumus alternatus on pine tree vitality : (2) A case of natural young Japanese red pine stands under different air pollution levels
creator
Okaba, Hiroto
Nakane, Kaneyuki
Tomii, Toshiyasu
Ebisu, Kouji
subject
Bursaphelenchus xylophilus
Feeding
Monochamus alternatus
Natural pine stand
Pinus densiflora
Tree vitality
NDC
Forestry
abstract
Six and nine individuals of the vector (Moncochamus alternatus) of pinewood nematode Bursaphelenchus xylophilus were placed into their own respective frames, which were covered with sheets of white nylon netting in order to prevent escape, for one month (June 24 to July 23,1998) at both natural young Japanese red pine (Pinus densiflora) stands located at Hachihonmatsu in Higashi-Hiroshima and Fukutomi-cho in Hiroshima Pref., where the air pollution levels were different from each other. The feeding effect of the vectors on was then traced in the field during 10 months (June 1998 to March 1999). Sixty-four of 67 trees in the four frames at the both stands, into which six or nine vectors were placed, were fed on by the vectors. However, only one of these 64 died in the frame of nine vectors at Hachihonmatsu site under heavy air pollution, even though the vectors has about 4,000 nemotode on average. No nematode could be found out in the most hardly fed pine tree in each frame, including dead pine tree. This suggests that the damage killing young pine trees is not caused by the feeding of vectors even in a population density of 6-9 individuals/25m^2 employed in the study, which may be extremely higher than that in the field.
journal title
Memoirs of the Faculty of Integrated Arts and Sciences, Hiroshima University. IV, Science reports
volume
Volume 25
start page
61
end page
73
date of issued
1999-12-28
publisher
広島大学総合科学部
contributor
国立情報学研究所
date of created
2006-03-21
issn
1340-8364
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Integrated Arts and Sciences
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