三田市フラワータウンとその周辺地域の借坑性カリバチ・ハナバチ類相: 竹筒トラップ調査による地域環境の評価

抄録

The trap-nes ttechniqu ei scommonly used to investiga ttehe life-histo raynd behavior of wasps and bees rentin gin plant stems or pre-existin gholes in wood. This study intends to discus sth eusefulnes sof thi stechniqu efor evaluatin genvironmental-informati oinn local areas, using tube-rentin gwasp and bee richnes sas an indicato rof natura lcondition sW.e analyzed richnes sof tube-rentin gwasp and bee in the four differen ttypes of loca lareas; new town area, urban area, rural areas in Sanda city. The results are as follows, l) In new town area tube-rentin gwasp and bee decreased their number of individua lasnd species richness, as compared with rural areas. 2) The wasps and bees had not been trapped at the center zone of urban area and they were trapped only in the flagmented forest of the area. 3) Eumenid wasps, which are large wasps preyin gon leaf-feedin gcaterpillars, decreased especial ltyhei rnumber of individua lin new town and urban areas .On the other hand, the small wasps preying on small wandering spiders, such as Trypoxylon and Auplopus, were dominant groups in those areas. We may conclude that anaysis of tube-renting wasp and bee richness is useful for estimating of natural conditions in the local area.