Dimorphic flowers modify the visitation order of pollinators from male to female flowers
Dimorphic flowers modify the visitation order of pollinators from male to female flowers
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二态花改变了传粉媒介从雄花到雌花的访问顺序
DOI：
10.1038/s41598-020-66525-5
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发表时间：
2020
影响因子：
4.6
通讯作者：
J Yoshimura
中科院分区：
文献类型：
--
作者：
K Tsuji;K Kobayashi;E Hasegawa;J Yoshimura
两性异形是物种内普遍存在的变异形式。了解两性异形是如何以及为什么进化的，将有助于阐明性状多样化的潜在机制。在开花植物中，当传粉者以不同的方式影响雌性和雄性植物适应性时，它们被认为是性二态性的驱动因素。在这里，我们发现花似乎操纵传粉者的行为，利用雌雄异株的树Eurya japonica的性二型性状。在这种植物中，雌花为传粉者提供了更高质量的奖励，而雄花则有更显眼的外观。植物通过诱导传粉者将花粉从雄花带到雌花而受益，因此它们的两性异形可能通过传粉者行为促进花粉运动。在二选一的实验中，传粉者经常从雄花转移到雌花，而计算机模拟表明，如果传粉者根据他们刚刚访问的花朵的特征改变行为，那么性二态特征就会进化。这些结果表明，影响传粉者访问顺序的花部性状已经在植物中进化。使用E. japonica，我们从理论上证明了传粉者顺序行为的诱导可能对花的性二型性的进化至关重要，我们的实验支持这些发现。
Sexual dimorphism is a pervasive form of variation within species. Understanding how and why sexual dimorphism evolves would contribute to elucidating the mechanisms underlying the diversification of traits. In flowering plants, pollinators are considered a driver of sexual dimorphism when they affect female and male plant fitness in distinct ways. Here, we found that flowers appear to manipulate the behavior of pollinators using sexually dimorphic traits in the dioecious treeEurya japonica. In this plant, female flowers present a higher-quality reward for pollinators, whereas male flowers have a more conspicuous appearance. Plants benefit by inducing pollinators to carry pollen from male to female flowers, and their sexual dimorphism might thus facilitate pollen movement through pollinator behavior. In two-choice experiments, pollinators frequently moved from male to female flowers, whereas computer simulation suggested that sexually dimorphic traits would evolve if pollinators changed behavior depending on the traits of the flowers they had just visited. These results suggest that the floral traits affecting the visiting order of pollinators have evolved in plants. UsingE. japonica, we theoretically show that the induction of sequential behavior in pollinators might be crucial to the evolution of sexual dimorphism in flowers, and our experiments support these findings.
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本地大黄蜂被外来大黄蜂取代：传粉媒介效率降低，但造访频率极高
影响因子：
2.7
作者：
Josefin A. Madjidian;C. Morales;Henrik G. Smith
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DOI：
--
发表时间：
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期刊：
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作者：
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作者：
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DOI：
10.1007/978-3-319-47829-6_281-1
发表时间：
2020
期刊：
Encyclopedia of Animal Cognition and Behavior
影响因子：
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作者：
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通讯作者：
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影响因子：
2.5
作者：
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