Long-distance pollen flow assessment through evaluation of pollinator foraging range suggests transgene escape distances
Long-distance pollen flow assessment through evaluation of pollinator foraging range suggests transgene escape distances
复制标题
DOI：
10.1073/pnas.0806040105
复制
发表时间：
2008-09-09
影响因子：
11.1
通讯作者：
Gepts, Paul
中科院分区：
文献类型：
--
作者：
Pasquet, Remy S.;Peltier, Alexis;Gepts, Paul
觅食范围是蜜蜂生态学的重要组成部分，对昆虫授粉植物具有重要意义，因为它决定了个体间异交的可能性。然而，远距离的花粉流动是很难评估的，特别是当植物还依赖于自花授粉时。花粉运动可以通过种群遗传数据间接估计，但传粉者飞行距离的补充数据是必要的，以验证这种估计。通过使用无线电跟踪豇豆传粉者返回航班，我们发现，木蜂访问豇豆花可以觅食到6公里，从他们的巢。觅食距离被发现是短于最大飞行范围，特别是在恶劣的天气条件下或低奖励水平。从完整的飞行记录中，蜜蜂访问野生和驯化的人口，我们得出结论，蜜蜂可以介导基因流，在某些情况下，允许转基因（基因工程材料）逃逸几公里。然而，大多数花间飞行发生在植物斑块内，而很少发生在植物斑块之间。
Foraging range, an important component of bee ecology, is of considerable interest for insect-pollinated plants because it determines the potential for outcrossing among individuals. However, long-distance pollen flow is difficuit to assess, especially when the plant also relies on self-pollination. Pollen movement can be estimated indirectly through population genetic data, but complementary data on pollinator flight distances is necessary to validate such estimates. By using radio-tracking of cowpea pollinator return flights, we found that carpenter bees visiting cowpea flowers can forage up to 6 km from their nest. Foraging distances were found to be shorter than the maximum flight range, especially under adverse weather conditions or poor reward levels. From complete flight records in which bees visited wild and domesticated populations, we conclude that bees can mediate gene flow and, in some instances, allow transgene (genetically engineered material) escape over several kilometers. However, most between-flower flights occur within plant patches, while very few occur between plant patches.