| 1 | When spring comes , they begin their long journey north . | |
| 2 | The geomagnetic orientation is one of the important mechanisms for orientation of insects in the long distance migration. | |
| 3 | The beet webworm, Loxostege sticticalis Linnaeus (Lepidoptera: Pyralidae), is a serious pest to farming and stockbreeding in Northern China. | |
| 4 | The question is often asked whether every butterfly makes the round-trip journey every year . | |
| 5 | Virus isolation have demonstrated that long-distance migratory waterfowls are important spreaders of influenza viruses. |
Copyright © Purple Culture Co., Ltd. 2001 - 2026. All right reserved.
