<紀要論文>
Ecological Studies on Anagrus incarnatus Haliday (Hymenoptera : Mymaridae), an Egg Parasitoid of the Rice Planthoppers” : II. Spatial Distribution of Parasitism and Host Eggs in the Paddy Field

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概要 Spatial distribution of parasitism by Anugrus imarnatus and that of the rice planthopper eggs were investigated by using Iwao’s (1968) method of A-m relationship. The spatial patterns of the host eggs... as well as that of parasitism were found to be overdispersed with an aggregative tendency. The relationship between individual host eggs and egg-masses parasitized by A. incarnatus showed a highly positive correlation. But the intensity of parasitism with respect to the host eggmass size showed a tendency of an inverse density dependent relationship between per cent parasitism and host density per patch.続きを見る

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登録日 2012.08.01
更新日 2021.02.05

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