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. 1977 Aug 5;197(4303):593-6.
doi: 10.1126/science.197.4303.593.

Coevolution of foraging in bombus and nectar dispensing in chilopsis: a last dreg theory

T G Whitham

Coevolution of foraging in bombus and nectar dispensing in chilopsis: a last dreg theory

T G Whitham. Science. .

Abstract

Flowers of Chilopsis linearis dispense nectar into pools and grooves. The bumblebee, Bombus sonorus, extracts pool nectar at a rate seven times faster than groove nectar. The result is the coevolution of a plant-pollinator system in which bees, while foraging efficiently, increase the number of flowers visited per calorie of nectar reward provided by the plant.

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