| Literature DB >> 17820919 |
L L Wolf, F R Hainsworth, F G Stiles.
Abstract
The efficiency with which several species of hummingbirds extract nectar was estimated by converting the rate of extraction of nectar volumes to the energy expended and the energy obtained from the nectar. The extraction rates depend on corolla and bill morphologies, and the extraction efficiencies depend, in addition, on the bird weight and nectar concentration. Differential extraction efficiencies can be exploited by plants to increase pollinator specificity.Year: 1972 PMID： 17820919 DOI： 10.1126/science.176.4041.1351
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728