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Investigating bee dietary preferences along a gradient of floral resources:how does resource use align with resource availability?

引用

Insect Science 2021年第2期28卷 555-565页

作者： Tyler T.Kelly elizabeth elle Evolutionary and Behavioural Ecology Research Group Department of Biological SciencesSimon Fraser UniversityBurnabyCanada

Bee dietary preferences,or the floral resources that they consistently collect,likely impact where a species can *** this reason it is likely that bee dietary preferences are dependent upon the composition of the plant *** this study,we evaluated floral visits and pollen loads of the mining bee,Andrena angustitarsata Viereck,across a 630 km north-south range to understand dietary preferences along a floral resource *** research,in a more geographically limited area,suggested this species was an eclectic oligolege on predominantly Apiaceae and in part *** the present study we found the species predominately visited and collected pollen from Apiaceae and Rosaceae,but visited 12 flower families and collected pollen from 32,distinguishing them as generalist *** frequency of Apiaceae pollen on the bees and the species-level specialization index(a measure of visit specialization)were higher in regions with higher Apiaceae *** addition Apiaceae and Rosaceae were the only plant families significantly preferred for pollen collection,regardless of floral *** conclude that across our study region *** has a generalist dietary breadth,but also has dietary preference for Apiaceae and *** study indicates that while bees may overall make generalist foraging decisions they may still prefer and likely benefit from selecting fewer flower taxa.

关键词： andrenidae dietary breadth ecoregions oak-savanna pollen specialization

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