HOME
THE PROJECT
PARTNERS
ONLINE LIBRARY
MEDIA CENTRE
EVENTS
NEWS
CONTACTS
LINKS
STEP QUESTIONNAIRE






Article alert: Optimal concentrations in nectar feeding
02.11.2011

Proceedings of the National Academy of Sciences (2011) 108(40): 16618-1662110; doi: 1073/pnas.1108642108

Wonjung Kima, Tristan Giletb, and John W. M. Bush

Nectar drinkers must feed quickly and efficiently due to the threat of predation. While the sweetest nectar offers the greatest energetic rewards, the sharp increase of viscosity with sugar concentration makes it the most difficult to transport. We here demonstrate that the sugar concentration that optimizes energy transport depends exclusively on the drinking technique employed. We identify three nectar drinking techniques: active suction, capillary suction, and viscous dipping. For each, we deduce the dependence of the volume intake rate on the nectar viscosity and thus infer an optimal sugar concentration consistent with laboratory measurements. Our results provide the first rationale for why suction feeders typically pollinate flowers with lower sugar concentration nectar than their counterparts that use viscous dipping.


See Attached files here:
Web Page Optimal concentrations in nectar feeding
all news »




« Back  Print pagePrint view




2024 STEP. All rights reserved.