Japanese Journal of Applied Entomology and Zoology
Online ISSN : 1347-6068
Print ISSN : 0021-4914
ISSN-L : 0021-4914
Effects of Mature Host Trees on Distribution of Prociphilus oriens MORDVILKO (Homoptera: Aphididae) on Fraxinus lanuginosa KOIDZ. Saplings
Kenji FUKUYAMA
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JOURNAL FREE ACCESS

1997 Volume 41 Issue 2 Pages 105-107

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Abstract

To test the JANZEN hypothesis, I investigated the proportion of injuries caused by Prociphilus oriens MORDVILKO on Fraxinus lanuginosa KOIDZ. saplings planted with mature host trees in Sapporo, Japan, in 1993. There is a significant negative relationship between the proportion of injuries caused by P. oriens and the distance from mature trees, supporting part of the JANZEN hypothesis.

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© by The Japanese Society of Applied Entomology and Zoology
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