大黄蜂的食性广度随当地丰度和物候期而增加,而不是随体型的种内变化而增加

IF 2.3 2区 环境科学与生态学 Q2 ECOLOGY
Will R. Glenny, Justin B. Runyon, Laura A. Burkle
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引用次数: 0

摘要

跨时空的丰度模式和体型的种内差异是已知的影响食性广度和相互作用网络结构的两个物种属性。然而,这些属性对食性广度的相对影响通常被认为在分类群之间是相同的,而体型的种内差异与相互作用模式之间的关系常常被忽视。我们在美国蒙大拿州的多个地点观察了蜜蜂与花卉在两个生长季节中的相互作用,并测量了丰度的空间和时间模式,以及主要物种体型的种间和种内差异。我们预测,大黄蜂与非大黄蜂物种相比,丰度的空间和时间模式、体型的种内变化以及食性广度之间的关联会更强,因为食性灵活、活动时间长的物种可以与更多的食物相互作用。与非熊蜂物种相比,熊蜂在当地的丰度更高,出现在许多当地群落中,体型的种内差异更大,表期更长,但与非熊蜂物种相比,只有当地丰度和表期持续时间与熊蜂的食性广度有更强的正相关。熊蜂比例较高的群落在网络水平上体型的种内变异也较高,网络水平上体型的种内变异与食性泛化呈正相关。我们的研究结果突出表明,物种属性与食性广度之间的关系会因分类群的不同而发生变化,这对相互作用网络的结构具有影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Bumble bee diet breadth increases with local abundance and phenophase duration, not intraspecific variation in body size

Bumble bee diet breadth increases with local abundance and phenophase duration, not intraspecific variation in body size

Patterns of abundance across space and time, and intraspecific variation in body size, are two species attributes known to influence diet breadth and the structure of interaction networks. Yet, the relative influence of these attributes on diet breadth is often assumed to be equal among taxonomic groups, and the relationship between intraspecific variation in body size on interaction patterns is frequently neglected. We observed bee–flower interactions in multiple locations across Montana, USA, for two growing seasons and measured spatial and temporal patterns of abundance, along with interspecific and intraspecific variation in body size for prevalent species. We predicted that the association between spatial and temporal patterns of abundance and intraspecific variation in body size, and diet breadth, would be stronger for bumble bee compared to non-bumble bee species, because species with flexible diets and long activity periods can interact with more food items. Bumble bees had higher local abundance, occurred in many local communities, more intraspecific variation in body size, and longer phenophases compared to non-bumble bee species, but only local abundance and phenophase duration had a stronger positive association with the diet breadth of bumble bee compared to non-bumble bee species. Communities with a higher proportion of bumble bees also had higher intraspecific variation in body size at the network-level, and network-level intraspecific variation in body size was positively correlated with diet generalization. Our findings highlight that the association between species attributes and diet breadth changes depending on the taxonomic group, with implications for the structure of interaction networks.

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来源期刊
Oecologia
Oecologia 环境科学-生态学
CiteScore
5.10
自引率
0.00%
发文量
192
审稿时长
5.3 months
期刊介绍: Oecologia publishes innovative ecological research of international interest. We seek reviews, advances in methodology, and original contributions, emphasizing the following areas: Population ecology, Plant-microbe-animal interactions, Ecosystem ecology, Community ecology, Global change ecology, Conservation ecology, Behavioral ecology and Physiological Ecology. In general, studies that are purely descriptive, mathematical, documentary, and/or natural history will not be considered.
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