所在位置：查字典英语网 > 大学英语 > 考研大学英语 > 考研大学英语阅读 > 遗传控制鸟类迁徙路径

遗传控制鸟类迁徙路径

发布时间：2016-03-03 编辑：查字典英语网小编

　　遗传控制鸟类迁徙路径　　By tracking hybrids between songbird species, investigators have found that migration routes are under genetic control and could be preventing interbreeding. The research, which is published in Ecology Letters, was conducted using geolocators that, like GPS, record the position of a bird and allow its long distance movement to be tracked. Compared with their parents, hybrids exhibited increased variability in their migratory routes: some used intermediate routes across less suitable areas, while others used the same routes as one parental group on fall migration and the other on spring migration. 　　This is the first time we ve been able to track songbirds over the entire annual cycle, and the data we collected support a longstanding hypothesis in ecological speciation, that differences in migratory behavior could be acting as postmating reproductive isolating barriers, said lead author Kira Delmore.

查看全部

上一篇：南极气候变化影响海狗数量

下一篇：2014第二季度亚马逊亏损1点26亿