花蜜和虫花处理时间随开花季节的变化:探索性研究的结果

IF 1.3 4区 环境科学与生态学 Q3 ECOLOGY
M. Barberis , G. Bogo , L. Bortolotti , S. Flaminio , E. Giordano , M. Nepi , M. Galloni
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引用次数: 1

摘要

近几十年来,在花蜜中发现了数百种次生代谢物,许多研究表明它们在调节访花者的行为中发挥着不同的作用。然而,花蜜化学在延长开花季节中的时间变化从未得到证实。此外,花蜜化学物质对昆虫行为的影响通常在实验室条件下进行研究,重点关注人工条件下可能影响昆虫反应的少数昆虫物种。本探索性研究的目的是比较长花期植物Echium vulgare L.自然种群在夏初和夏末花蜜化学和传粉者访花时间的差异。在夏初和夏末采集花蜜样本,观察昆虫共480 min。生物胺、糖和蛋白质与非蛋白质氨基酸的比值随着季节的进行而增加。尚不清楚这些变化是由生物和非生物因素决定的,还是植物表达了某种化学限制,然而,似乎花蜜化学的变化可能是大黄蜂在花期结束时对一朵花进行更长时间访问的原因。虽然不是决定性的,但这些结果为未来的研究奠定了基础,并突出了一个有趣的问题。既然长时间开花的植物在开花期间会看到环境的变化,它们是否表达了化学约束来调节它们的吸引力?
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Floral nectar and insect flower handling time change over the flowering season: Results from an exploratory study

In recent decades, hundreds of secondary metabolites have been found in floral nectar and many studies have demonstrated that they can play various roles in modulating the behaviour of floral visitors. However, temporal variations in nectar chemistry over extended flowering seasons have never been substantiated. Moreover, the effects of nectar chemicals on insect behaviour are often studied under laboratory conditions, focusing on few insect species under artificial conditions which may influence insect responses. The aim of this exploratory study was to compare nectar chemistry and the durations of pollinator visits in the early and late summer periods of the long-flowering species Echium vulgare L. in natural populations. Nectar samples were collected in the early and late summer periods and insects were observed for a total of 480 min. The biogenic amine octopamine, sugars and the protein to non-protein amino acid ratio increased as the season proceeded. It remains to clarify whether these changes are determined by biotic and abiotic factors or whether the plant expresses some chemical constraint, however it seems likely that changes in nectar chemistry may be the cause of the longer visits by bumblebees to single flowers at the end of the flowering season. Though not conclusive, these results set a baseline for future research and highlight an interesting question. Since long-flowering plants see changing contexts during their bloom period, do they express chemical constraints to regulate their attractiveness?

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来源期刊
CiteScore
3.60
自引率
0.00%
发文量
57
审稿时长
>0 weeks
期刊介绍: Acta Oecologica is venue for the publication of original research articles in ecology. We encourage studies in all areas of ecology, including ecosystem ecology, community ecology, population ecology, conservation ecology and evolutionary ecology. There is no bias with respect to taxon, biome or geographic area. Both theoretical and empirical papers are welcome, but combinations are particularly sought. Priority is given to papers based on explicitly stated hypotheses. Acta Oecologica also accepts review papers.
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