Constrained patterns of pollen use in Nearctic Andrena (Hymenoptera: Andrenidae) compared with their Palaearctic counterparts
- 27 June 2018
- journal article
- research article
- Published by Oxford University Press (OUP) in Biological Journal of the Linnean Society
- Vol. 124 (4), 732-746
- https://doi.org/10.1093/biolinnean/bly080
Abstract
Andrena is a large genus of bees primarily distributed across the Holarctic. Despite their abundance in temperate regions, the pollen diets of many Nearctic Andrena remain incompletely resolved. The pollen diets of 50 species of Andrena found in Michigan were characterized using light microscopy. Twenty-four species (48%) were classified as pollen specialists, collecting pollen from one botanical family. The remaining 26 species (52%) were classified as pollen generalists, collecting from many botanical families. Andrena species fell into three broad foraging groups: (1) spring-flying species foraging predominantly from woody plants; (2) spring-flying species specializing on herbaceous ephemerals; and (3) summer-flying species specializing on herbaceous prairie plant species. Species of Nearctic Andrena specialized on pollens from Asteraceae, Geraniaceae, Hydrophyllaceae and Montiaceae or avoided them almost entirely. Botanical families that hosted specialized bees showed a higher variation in utilization by the Andrena community than botanical families without specialists. In contrast, Palaearctic species showed little temporal partitioning and low variation in the utilization of different botanical families. This pattern of pollen use supports previous findings that pollens from certain botanical families cannot be used as a food source without physiological adaptations, but that this phenomenon is more pronounced in the Nearctic Andrena fauna.Keywords
This publication has 29 references indexed in Scilit:
- Nest Architecture of the Monolectic South African Solitary Bee,Samba(Prosamba)SpinosaEardley (Hymenoptera: Apoidea: Melittidae)African Entomology, 2011
- Bees (Hymenoptera: Apidae) That Drink Human TearsJournal of the Kansas Entomological Society, 2009
- Pollen hosts of western palaearctic bees of the genus Colletes (Hymenoptera: Colletidae): the Asteraceae paradoxBiological Journal of the Linnean Society, 2008
- Quantitative pollen requirements of solitary bees: Implications for bee conservation and the evolution of bee–flower relationshipsBiological Conservation, 2006
- Does specialization explain rarity and decline among British bumblebees? A response to Goulson et al.Biological Conservation, 2005
- Pollination of Campanula rapunculus L. (Campanulaceae): How much pollen flows into pollination and into reproduction of oligolectic pollinators?Österreichische botanische Zeitschrift, 2005
- Pyrrolizidine Alkaloids of Echium vulgare Honey Found in Pure PollenJournal of Agricultural and Food Chemistry, 2005
- Pollen nutritional content and digestibility for animalsÖsterreichische botanische Zeitschrift, 2000
- Obligate Necrophagy in a Social BeeScience, 1982
- Pollens collected by species of Andrena (Hymenoptera: Apidae)Proceedings of the Royal Entomological Society of London. Series A, General Entomology, 1968