步甲夜间迁飞的研究

【目的】利用垂直监测雷达可以长期实时自动监测的特点，研究鞘翅目昆虫步甲是否具有迁飞性，并探讨步甲的迁飞活动规律。【方法】设置雷达观测点，利用垂直监测昆虫雷达及相关辅助设备长期观测结果，结合气象资料进行低空气流和大区环流分析，探讨鞘翅目昆虫步甲迁飞的事实。【结果】2005和2006年的观测资料表明，步甲季节内活动主要在6月下旬至8月下旬，高峰期主要集中在8月份，高空和地面诱虫灯季节内诱集有明显突增突减现象；高峰期内雷达回波点高度可达600 m，主要集中在450 m以下；夜间活动大多在20:00～22:00之间，个别夜晚雷达回波持续到04:00左右，探照灯内步甲数量的变化与雷达回波强度具有一致性；系留气球携带的捕虫网在200 m的空中成功捕到步甲成虫。【结论】步甲属的某些种类具有一定的迁飞性，为研究鞘翅目昆虫的迁飞提供了依据。

Nocturnal Migration of Coleoptera:Carabidae in North China

【OBJECTIVE】Vertical-looking radar(VLR)has allowed long-term automatically monitoring of the altitudinal and temporal dynamics of high-flying insect populations.Using the VLR to investigate whether ground beetles migrate nocturnally through China. and observe the behaviour of migrating insect,such as the orientation and mode of navigation of high-altitude nocturnal migrants;【METHOD】Using the VLR and auxiliary equipment weather information analyzing wind speed and wind direction atmosphere dynamic;【RESULTS】The results show that the carabids density is relative higher from late July to late August.The numbers in light trap catches sudden increase and following sharp drops are obviously.The dots of carabids from the radarscope usually last from 20:00 to 22:00 and sometimes till 04:00. The height of insect flied mainly below 600m and the most insects flied in the height 450m. The number of carabids is positive correlation between vertical-pointing searchlight and the VLR;【CONCLUSION】The result shows that several species of carabids can migrate nocturnally,which can provide good proofs in further study.