17 アカマツ寄生穿孔蟲類の生態的研究蝕痕の基礎的研究(豫報)
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概要
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In this studies, the writer reconsidered the past studies on the scolytid work of bark beetles, to aquire the fundamental matter of control on bark beetle epidemic.In the classification of scolytid work patterns, Judeich and Nitsche, Nusslin and Rhumbler; A. Barbey always classified the Scolytid work patterns, made by adult for oviposition and made by larva to take nutrition, under the bark or in the xylem. Doane, R. W. classified, add to these classifications, two types of scolytid work patterns, these may be enlarged carities in the pith of twigs, and which burrow through the axis of immature cone.But although the writer, standing other ecological view point, classified as follows : I. A tyre of scolytid work by a construction of the ecological environment.a. A construction of nuptial chamber.b. A construction of tunnel for hibernation (overwintering)c. A construction of fly-hole.d. A construction of egg-tunnel or oviposition hole.e. A construction of pupal cell.II. A type of scolytid work to take nutrition.a, New adult beetles burrow through the axis of twigs, or eat out cambium and Outside of bark to take nutrition.b. Old adult beetles burrow through the axis of buds, transversely, and eat out under the bark or phloem to take nutrition for re-generation.c. The larva eat out Cambium or phloem.d. The larva, only while early stage, eat out phloem on surface of sapwood, and then after deeply burrow into xylem.
- 一般社団法人日本森林学会の論文
- 1949-04-30