Seasonal difference in the abundance of the spruce beetle (Ips typographus japonicus Niijima) (Col., Scolytidae) within and outside forest in a bivoltine area

K Furuta; K Iguchi; Simon A Lawson

doi:10.1111/j.1439-0418.1996.tb01578.x

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Seasonal difference in the abundance of the spruce beetle (Ips typographus japonicus Niijima) (Col., Scolytidae) within and outside forest in a bivoltine area

Journal article

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Seasonal difference in the abundance of the spruce beetle (Ips typographus japonicus Niijima) (Col., Scolytidae) within and outside forest in a bivoltine area

K Furuta, K Iguchi and Simon A Lawson

Journal of Applied Entomology, Vol.120(3), pp.125-129

1996

DOI: https://doi.org/10.1111/j.1439-0418.1996.tb01578.x

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Abstract

coleoptera

dendroctonus rufipennis

Ips typographus

picea

scolytinae

typographus

typographus japonicus

In Hokkaido (Japan), the spruce beetle (lps typograpaus japonicus) kills standing spruce trees after selection cutting. The seasonal change in the number of beetles captured in 18-21 traps within or outside forest was analysed, with reference to a control strategy for this species in a bivoltine area. The number of beetles captured in traps had two peaks: one, which was small, in early June, and the other, which was a large peak, in July. However, the number of beetles captured in traps outside the forest had only one small peak, in June. The difference between the inside and outside of the forest was caused by the difference in the number of newly emerged beetles captured in traps. Beetles were distributed contagiously within the forest and there was no remarkable change in distribution pattern throughout seasons. Beetles were distributed at random in June when beetle activity was high outside forest. Overwintered beetles must undertake long- range dispersal irrespective of whether they are within or outside of forest for finding suitable breeding materials. Nevertheless, the most important point is that newly emerged beetles stayed inside the forest and only a few individuals dispersed outside the forest. This study recommends that different control methods are adopted according to the seasons for the control of spruce beetles.

Details

Title: Seasonal difference in the abundance of the spruce beetle (Ips typographus japonicus Niijima) (Col., Scolytidae) within and outside forest in a bivoltine area
Authors: K Furuta (Author) - University of Tokyo, Japan
K Iguchi (Author) - University of Tokyo, Japan
Simon A Lawson (Author) - University of Tokyo, Japan
Publication details: Journal of Applied Entomology, Vol.120(3), pp.125-129
Publisher: Wiley-Blackwell Verlag GmbH
Date published: 1996
DOI: 10.1111/j.1439-0418.1996.tb01578.x
ISSN: 0931-2048
Organisation Unit: University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
Language: English
Record Identifier: 99449125302621
Output Type: Journal article

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