Pollen transfer networks reveal alien species as main heterospecific pollen donors with fitness consequences for natives
Pollen transfer networks reveal alien species as main heterospecific pollen donors with fitness consequences for natives
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花粉转移网络揭示外来物种是主要的异种花粉供体，对当地人的健康产生影响
DOI：
10.1111/1365-2745.13520
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发表时间：
2020
影响因子：
5.5
通讯作者：
Heard, ed., Matthew
中科院分区：
文献类型：
--
作者：
Parra‐Tabla, Víctor;Alonso, Conchita;Ashman, Tia‐Lynn;Raguso, Robert A.;Albor, Cristopher;Sosenski, Paula;Carmona, Diego;Arceo‐Gómez, Gerardo;Heard, ed., Matthew
共花群落的生态动态在很大程度上是由传粉者介导的。然而，目前对传粉媒介介导的相互作用的理解主要依赖于共花植物如何影响共享传粉媒介的吸引力，而对通过异种花粉（HP）转移发生的植物-植物相互作用知之甚少。入侵的社区，特别是可以高度影响外来花粉的转移，但这些相互作用的强度，驱动程序和健身的后果，在社区规模还没有很好地understood.在这里，我们分析了HP传输网络在9个沿海社区在墨西哥尤卡坦半岛的入侵花的相对丰度不同，以评估如何HP捐赠和接收本地和外来植物之间的变化。我们进一步评估是否HP捐赠和接收介导的花性状（如显示，花的大小）或传粉者的访问率。最后，我们评估了授粉后的成功（产生的花粉管比例）是否受到外来HP接收的影响，以及这种影响在本地和外来受体之间是否存在差异。15%），这表明高HP转移的研究社区。显着的网络嵌套进一步表明存在的物种，主要作为HP捐助者或接受者在社会中。物种水平的分析表明，本地人比外来物种多获得80%的HP，而外来植物比本地人多贡献40%的HP。HP接收和捐赠介导的不同的花性状和这种影响是独立的植物来源（本地或外来）。外源HP的比例对本地种的花粉管成功率有显著影响，但对外源种的影响不显著。我们的研究结果表明，入侵社区的HP转移是普遍的，本地和外来物种在HP转移网络中发挥着不同的作用，这是由不同的花的性状。特别是外来物种，作为HP供体发挥着核心作用，并且比本地人更能耐受HP接收-这一发现指出了两个被忽视的机制，促进了外来植物入侵和本地共花社区的成功。
The ecological dynamics of co‐flowering communities are largely mediated by pollinators. However, current understanding of pollinator‐mediated interactions primarily relies on how co‐flowering plants influence attraction of shared pollinators, and much less is known about plant–plant interactions that occur via heterospecific pollen (HP) transfer. Invaded communities in particular can be highly affected by the transfer of alien pollen, but the strength, drivers and fitness consequences of these interactions at a community scale are not well understood.Here we analyse HP transfer networks in nine coastal communities in the Yucatan Mexico that vary in the relative abundance of invasive flowers to evaluate how HP donation and receipt varies between native and alien plants. We further evaluate whether HP donation and receipt are mediated by floral traits (e.g. display, flower size) or pollinator visitation rate. Finally, we evaluated whether post‐pollination success (proportion of pollen tubes produced) was affected by alien HP receipt and whether the effect varied between native and alien recipients.HP transfer networks exhibit relatively high connectance (c. 15%), suggesting high HP transfer within the studied communities. Significant network nestedness further suggests the existence of species that predominantly act as HP donors or recipients in the community. Species‐level analyses showed that natives receive 80% more HP compared to alien species, and that alien plants donate 40% more HP than natives. HP receipt and donation were mediated by different floral traits and such effects were independent of plant origin (native or alien). The proportion of alien HP received significantly affected conspecific pollen tube success in natives, but not that of alien species.Synthesis. Our results suggest that HP transfer in invaded communities is widespread, and that native and alien species play different roles within HP transfer networks, which are mediated by a different suite of floral traits. Alien species, in particular, play a central role as HP donors and are more tolerant to HP receipt than natives—a finding that points to two overlooked mechanisms facilitating alien plant invasion and success within native co‐flowering communities.
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影响因子：
2.7
作者：
Montgomery, Benjamin R.;Rathcke, Beverly J.
通讯作者：
Rathcke, Beverly J.
外来物种对入侵群落植物花卉访客网络结构的作用
影响因子：
3.7
作者：
V. Parra‐Tabla;Diego Angulo;Cristopher Albor;M. Campos;Juan Tun;P. Sosenski;C. Alonso;T. Ashman;G. Arceo‐Gómez
通讯作者：
G. Arceo‐Gómez
影响因子：
3
作者：
Ashman, Tia-Lynn;Arceo-Gomez, Gerardo
通讯作者：
Arceo-Gomez, Gerardo
DOI：
10.1098/rspb.2019.2657
发表时间：
2020-02-26
影响因子：
4.7
作者：
Herrera, Carlos M.
通讯作者：
Herrera, Carlos M.
墨西哥两个沿海灌木地植物-膜翅目网络的结构
影响因子：
1.6
作者：
M. Campos;V. Parra‐Tabla;J. Ramos;C. Díaz‐Castelazo;E. Reyes‐Novelo
通讯作者：
E. Reyes‐Novelo