Tohoku Journal of Forest Science
Online ISSN : 2424-1385
Print ISSN : 1342-1336
ISSN-L : 1342-1336
Original Article
Emergence and oviposition of the alder longicorn beetle, Cagosima sanguinolenta Thomson (Coleoptera, Cerambycidae), and its damage in a young stand of Betula maximowicziana Regel (Betulaceae)
Tadao Gotoh Jiro ShishiuchiHisashi Sugita
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JOURNAL FREE ACCESS

2007 Volume 12 Issue 1 Pages 21-27

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Abstract
Emergence and oviposition of Cagosima sanguinolenta and its damge were investigated in a young Betula maximowicziana stand regenerated 8 years after the clear cutting of a larch plantation in Shizukuishi, Iwate Prefecture, northern Japan. The adult emergence period was only two weeks from late May to mid June. Two years of observations of adult emergence suggested that the beetle requires at least two years to complete its life cycle in Iwate Prefecture. The oviposition period lasted a little less than two months, from mid June to early August The oviposition scars were aggregated in the investigated stand and the number of scars on a tree was positively correlated to its diameter at breast height In addition, 81.7 % of oviposition scars were observed in the lowermost 60 cm of tree trunks. The average number of damaged areas (knots on tree trunk, holes from frass ejection, emergence holes) was 3.75, and 82.4 % of the trees in the stand had been damaged by the beetle. The damage was also aggregated in the stand. The number of damaged areas on a tree was positively correlated to its diameter at breast height Moreover, the greatest rate of damage was found from 41 to 60 cm above the ground on the tree trunks. These findings indicate that the aggregation of the damage in the stand and at a certain height range of tree trunk can be attributed to female oviposition preference for bigger trees and the lower parts of trunks.
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© 2007 The Tohoku Society of Forest Science
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