| 1. | If so, breakdown of their flight muscles may prevent them from reaching their destiny .
即使如此，飞翔肌肉的衰竭，可防止它们再次迁飞。 |
| 2. | When spring comes , they begin their long journey north
当春季来临的时候，它们又开始向北迁飞。 |
| 3. | Many other species of insect were found to be wind - borne migrants and might produce significant migration
发现其它一些昆虫也具迁飞性，有可能形成显著的迁飞。 |
| 4. | The long distance high - altitude wind - borne migration of the beet webworm moths l . sticticalis and short distance dispersal were observed in 2001 and 2002
2001和2002年观测到了草地螟高空远距离的风载迁飞和短距离扩散。 |
| 5. | It was confirmed that s . exigua and some other species were high - altitude nocturnal wind - borne migrants in september and october in northern china
研究发现9月和10月在华北地区甜菜夜蛾和一些其它种类是夜间在高空迁飞的风载昆虫。 |
| 6. | Ladybird propylaeajaponica & harmonia axyridis , ground beetle pseudoophonus griseus and ant lion chrysopidae were dominant natural enemies migrating with insect pests
龟纹瓢虫propylaeajaponica &异色瓢虫harmoniaaxyridis ,步甲pseudoophonusgriseus和草蛉是伴随害虫迁飞的主要天敌。 |
| 7. | The searchlight trap was found to be an efficient tool for trapping migrants and , operated alongside a ground light - trap , could distinguish migrant from locally - flying species
探照灯诱虫器能有效地诱集迁飞昆虫，与地面灯诱虫器同时使用可以将迁飞昆虫从当地繁殖的昆虫种类中区分出来。 |
| 8. | Collective orientation by the moths was often present in the spring and autumn migration , and the direction of orientation was towards the northeast in spring but to the southwest in autumn . multi - level layering of migrants was seen every night in
棉铃虫一般在1500m以下迁飞，成层常出现在300 、 500或1000m高度，并且多层现象也经常出现。 |
| 9. | Ovary development stage of females in catches and radar observation indicated that l . sticticalis migrated to northeast in early june , to southwest in august and september , and locally - bred moths dispersed over shorter distances in july and august
卵巢发育进度法和雷达观测表明草地螟在6月初向东北迁飞，在8月和9月向西南迁飞，当地繁殖的蛾子在7 、 8月份进行短距离扩散。 |
| 10. | A fter settling down in a suitable habitat , these fire ants will breed and continuously extend their territories . they will expand their range by flight , flood , and hitchhiking with cultivated plants , agriculture machines , and cargo containers
入侵红火蚁在适合的环境下开始立足并繁殖， ?们再利用自然迁飞、洪水扩散等自然方式，或藉由园艺植栽、农耕机具设备和货柜污染等人为方式，持续向外扩大范围。 |
