Bumblebees can detect floral humidity

Bumblebees can detect floral humidity
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大黄蜂可以检测花朵的湿度

DOI:
10.1101/2021.03.19.436119
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发表时间:
2021
期刊:
--
影响因子:
--
通讯作者:
Harrap M
Harrap M
中科院分区:
--
文献类型:
--
作者:
Harrap M

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花的湿度,在花的顶部空间中的湿度升高的区域,发生在许多植物物种中,并且可以增加它们的多模态花展示。到目前为止,只有当天蛾在一些蛾授粉的花朵前盘旋时,它们才能找到并提取花蜜,从而对花朵湿度线索做出检测和反应。为了测试花卉湿度是否可以被其他更广泛的通才传粉者使用,我们设计了人造花,这些人造花呈现出与显花植物相似的生物相关湿度水平。大黄蜂表现出自发的偏好,产生较高的花卉湿度的花朵。此外,学习实验表明,熊蜂能够利用花朵湿度的差异来区分奖励和非奖励花朵。我们的研究结果表明,熊蜂是敏感的不同水平的花卉湿度。通过这种方式,花卉湿度可以增加花卉提供的信息,并可能比以前认为的更显着地影响传粉者的行为。
Floral humidity, a region of elevated humidity in the headspace of the flower, occurs in many plant species and may add to their multimodal floral displays. So far, the ability to detect and respond to floral humidity cues has been only established for hawkmoths when they locate and extract nectar while hovering in front of some moth-pollinated flowers. To test whether floral humidity can be used by other more widespread generalist pollinators, we designed artificial flowers that presented biologically relevant levels of humidity similar to those shown by flowering plants. Bumblebees showed a spontaneous preference for flowers that produced higher floral humidity. Furthermore, learning experiments showed that bumblebees are able to use differences in floral humidity to distinguish between rewarding and non-rewarding flowers. Our results indicate that bumblebees are sensitive to different levels of floral humidity. In this way floral humidity can add to the information provided by flowers and could impact pollinator behaviour more significantly than previously thought.
DOI: 10.1371/journal.pone.0099032
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