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Science:熊蜂破坏植物叶片能够促进开花

已有 1303 次阅读 2020-5-24 07:58 |个人分类:每日摘要|系统分类:论文交流

Bumble bees damage plant leaves and accelerate flower production when pollen is scarce

第一作者Foteini G. Pashalidou

第一单位苏黎世联邦理工学院

通讯作者Consuelo M. De Moraes


 Abstract 


背景回顾Maintaining phenological synchrony with flowers is a key ecological challenge for pollinators that may be exacerbated by ongoing environmental change.


主要发现:Here, we show that bumble bee workers facing pollen scarcity damage leaves of flowerless plants and thereby accelerate flower production.


户内试验:Laboratory studies revealed that leaf-damaging behavior is strongly influenced by pollen availability and that bee-damaged plants flower significantly earlier than undamaged or mechanically damaged controls.


户外试验:Subsequent outdoor experiments showed that the intensity of damage inflicted varies with local flower availability; furthermore, workers from wild colonies of two additional bumble bee species were also observed to damage plant leaves.


结论:These findings elucidate a feature of bumble bee worker behavior that can influence the local availability of floral resources.


 摘  要 


植物花的物候保持同步是授粉昆虫所要面对的一个主要生态挑战,而不断变化的环境可能使得该挑战不断加剧。本文中,作者发现熊蜂工蜂会在花粉稀缺时啃咬还未开花植物的叶片,从而促进这些植物开花。实验室研究显示叶片的破环行为受到有无花粉的强烈影响,而那些被熊蜂损伤的植株开花要明显早于未被损伤的植株与被机械损伤的对照组。后续的户外试验显示野外植物受损伤的程度与当地可利用花的多少相关。此外,作者还观察到来自野外的另外两种熊蜂物种的工蜂同样也会破坏植物的叶片。本文的研究揭示了熊蜂工蜂的一种影响地区可利用花资源的行为。


 Bumble bee gardeners 


Bumble bees rely heavily on pollen resources for essential nutrients as they build their summer colonies. Therefore, we might expect that annual differences in the availability of these resources must simply be tolerated, but Pashalidou et al. made observations suggesting that bees may have strategies to cope with irregular seasonal flowering (see the Perspective by Chittka). When faced with a shortage of pollen, bumble bees actively damaged plant leaves in a characteristic way, and this behavior resulted in earlier flowering by as much as 30 days. Experimenters were not able to fully replicate the results with their own damage, suggesting that there is a distinct method that the bees use to stimulate earlier flowering.


熊蜂在夏季建造蜂巢时十分依赖于花粉资源提供足够的影响。因此,我们可能会预期熊蜂可能要忍受花粉资源的年度波动差异,但是Pashalidou等人的研究显示熊蜂可能具有应对非规律性季节开花的策略。当面临花粉短缺时,熊蜂会以一种独特的方式主动破坏植物的叶片,而这种行为会导致这些植物大约提前一个月左右开花。然后,通过人工去制造植物叶片的机械损伤并不能够促进这些植物提前开花,说明这些熊蜂具有自己独特的方式来促进植物提前开花。


 通讯作者 


**Consuelo M. De Moraes**


研究方向:通过感知和信号的信息传递如何作用于种间生态互作


doi: 10.1126/science.aay0496


Journal: Science

Published date: May 22, 2020



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