A paradoxical mismatch between interspecific pollinator moves and heterospecific pollen receipt in a natural community
A paradoxical mismatch between interspecific pollinator moves and heterospecific pollen receipt in a natural community
复制标题
自然群落中种间传粉者移动与异种花粉接收之间矛盾的不匹配
DOI：
10.1002/ecy.1433
复制
发表时间：
2016-08-01
期刊：
影响因子：
4.8
通讯作者：
Huang, Shuang-Quan
中科院分区：
文献类型：
--
作者：
Fang, Qiang;Huang, Shuang-Quan
传粉者访问多个植物物种可能会导致异种花粉转移（HPT）。为了检验一个零模型，更多的传粉者种间移动导致更高的HPT之间的相互作用的物种，我们量化了两个网络的比较幅度，涉及14个共花物种在喜马拉雅山东部，中国西南部的高山草甸。种间移动占总访问量的4%，而异种花粉占总柱头花粉负荷的22%。平均而言，植物物种收到种间移动和HPT从6.9和9.7其他物种，分别。虽然这两个网络在很大程度上是一致的，21.6%的种间移动链接没有相应的HPT连接，44.1%的异种花粉传递链接没有连接的动作。正如预期的那样，具有更多外向传粉者移动的植物物种倾向于将更多自己的花粉传播给其他物种。令人惊讶的是，我们的数据显示，植物物种，收到更多的传粉者移动从其他物种往往收到较少的HP，这意味着只有低接受HP的物种可能允许频繁的传粉者移动。这些新的发现揭示了传粉者种间移动和HP接收之间的矛盾关系，表明共花物种的适应策略，减少HPT的有害影响。
Pollinators visiting multiple plant species may cause heterospecific pollen transfer (HPT). To test a null model that more pollinator interspecific moves result in higher HPT among interacting species, we quantified the comparative magnitudes of the two networks involving 14 co-flowering species in an alpine meadow in the eastern Himalaya, southwest China. Interspecific moves accounted for 4% of the total visits, whereas heterospecific pollen constituted 22% of the total stigmatic pollen loads. On average, plant species received interspecific moves and HPT from 6.9 and 9.7 other species, respectively. Although the two networks were largely concordant, 21.6% of interspecific move links were not correspondingly linked by HPT, and 44.1% of heterospecific pollen transfer links were not linked by moves. Plant species with more outgoing pollinator moves tended to disperse more of their own pollen to others, as expected. Surprisingly, our data reveal that plant species which received more pollinator moves from other species tended to receive less HP, implying that only species with low acceptance of HP were likely to permit frequent pollinator moves. These new findings unveil a paradoxical relation between pollinator interspecific moves and HP receipt, suggesting an adaptive strategy of co-flowering species that reduces deleterious effects of HPT.