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首页> 外文期刊>Ecological Entomology >Bumble bees selectively use native and exotic species to maintain nutritional intake across highly variable and invaded local floral resource pools
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Bumble bees selectively use native and exotic species to maintain nutritional intake across highly variable and invaded local floral resource pools

机译：大黄蜂有选择地利用本地和外来物种来维持高度变化和入侵的当地花卉资源库的营养摄入

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摘要

1. Changes to plant community composition after invasion are well documented but how these shifts directly affect higher trophic levels is still poorly understood. One potentially important factor is the change in nutritional availability after an invasion. Shifts in nutrient availability could affect the nutrient intake of organisms that live in invaded habitats, causing reduced fecundity and survival. 2. The effects of the interaction among nutrient availability, selection, and diet on nutrient intake of a native bumble bee were examined. No nutritional differences were found between exotic and native pollen or collected and non-collected pollen in protein or amino acid content, suggesting that differences in nutrient intake from random are based on selection. 3. Nutrient intake was simulated when pollen was selected randomly across all available plant species and when selection was restricted to native plants only or exotic plants only using a permutation model and compared with observed collection. The results suggest that pollen collection is non-random and that selecting only native or exotic plants cannot provide the protein or amino acid intake observed. 4. These results may help to explain why the responses of native bees to exotic plants are so variable. If the exotic plants in a community can supply the necessary nutrients, bees may readily incorporate them into their diets, but if not, exotic plants may be avoided.
机译：1.入侵后植物群落组成的变化有充分的文献记载，但这些变化如何直接影响较高的营养水平仍知之甚少。一个潜在的重要因素是入侵后营养供应的变化。养分利用率的变化可能会影响生活在入侵栖息地中的生物体的养分吸收，从而降低繁殖力和生存率。 2.研究了养分的可获得性，选择和饮食之间的相互作用对本地大黄蜂养分摄入的影响。在外来花粉和天然花粉之间，或在采集的和未采集的花粉之间，在蛋白质或氨基酸含量上均未发现营养差异，这表明随机采食的营养素差异是基于选择的。 3.当在所有可用植物物种中随机选择花粉，并且仅使用排列模型将选择仅限于本地植物或仅外来植物时，模拟养分摄入，并与观察到的收集物进行比较。结果表明花粉收集是非随机的，仅选择天然或外来植物不能提供观察到的蛋白质或氨基酸摄入量。 4.这些结果可能有助于解释为什么本地蜜蜂对外来植物的反应如此变化。如果社区中的外来植物能够提供必要的营养，蜜蜂可以很容易地将其纳入饮食，但如果没有，则可以避免外来植物。

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