オオコクヌスト成虫・幼虫によるマツノマダラカミキリ捕食実験(保護)

概要

論文の詳細を見る
Predation of Trogossita japonica Reitter (Coleoptera: Trogossitidae) on the Japanese pine sawyer, Monochamus alternatus Hope (Coleoptera: Cerambycidae), the vector of pine wilt disease, was investigated in field cages. In the case of the release of adults of the predator into cages containing one meter long bolts infested with M. alternatus, many cerambycid beetles emerged in the next year in numbers similar to the control and no predators were collected. However, when two or four larvae of the predator in their third or fourth instar were inoculated under the bark of the infested bolts, the total numbers of emerged cerambycid beetles and still remaining larvae in the bolts in the next year were significantly fewer in number than that of control, and the ratio of empty pupal chambers without emergence holes was high. In this case the cerambycid larvae might have been eaten by the predator. But there was no effect of inoculating the second instar larvae or at higher density. T. japonica was observed to pupate at the end of July under bark, in the pupal chambers of the host or in original pupal chambers which protruded from the tunnel of the pupal chamber of the host.
応用森林学会の論文
1996-03-25