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首页> 美国卫生研究院文献>Scientific Reports >Invasive plants as potential food resource for native pollinators: A case study with two invasive species and a generalist bumble bee
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Invasive plants as potential food resource for native pollinators: A case study with two invasive species and a generalist bumble bee

机译：外来入侵植物可作为本地授粉媒介的潜在食物资源：以两个入侵物种和一只大黄蜂为例的案例研究

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It is now well established that invasive plants may induce drifts in the quantity and/or quality of floral resources. They are then often pointed out as a potential driver of bee decline. However, their impact on bee population remains quite unclear and still controversial, as bee responses are highly variable among species. Here, we compared the amino acid composition of pollen from three native and two invasive plant species included in diets of common pollinators in NW Europe. Moreover, the nutritional intake (i.e., pollen and amino acid intakes) of Bombus terrestris colonies and the pollen foraging behaviour of workers (i.e., visiting rate, number of foraging trips, weight of pollen loads) were considered. We found significant differences in pollen nutrients among the studied species according to the plant invasive behaviour. We also found significant differences in pollen foraging behaviour according to the plant species, from few to several foraging trips carrying small or large pollen loads. Such behavioural differences directly impacted the pollen intake but depended more likely on plant morphology rather than on plant invasive behaviour. These results suggest that common generalist bumble bees might not always suffer from plant invasions, depending on their behavioural plasticity and nutritional requirements.
机译：现在已经很好地确定，入侵植物可引起花卉资源的数量和/或质量的漂移。因此，通常会指出它们是蜜蜂下降的潜在驱动力。但是，它们对蜜蜂种群的影响仍然不清楚，并且仍然存在争议，因为蜜蜂的反应在物种之间变化很大。在这里，我们比较了欧洲西北部常见授粉媒介饮食中三种天然和两种入侵植物花粉的氨基酸组成。此外，还考虑了熊熊菌属菌落的营养摄入量（即花粉和氨基酸的摄入量）和工人的花粉觅食行为（即探视率，觅食次数，花粉重量）。根据植物的入侵行为，我们发现被研究物种之间的花粉养分存在显着差异。我们还发现根据植物种类的不同，花粉觅食行为存在显着差异，从携带少量或较大花粉负载的觅食行程到极少几次。这种行为差异直接影响花粉的摄入量，但更可能取决于植物的形态而不是植物的侵入性行为。这些结果表明，普通的多头大黄蜂可能并不总是遭受植物入侵的侵害，这取决于它们的行为可塑性和营养要求。

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