Tuesday, 16 November 2004 - 9:36 AM
0078

Metabolism and foraging behavior in European and African honeybees

Dina L. Grayson, beegirl1@asu.edu, Alexander Keyel, alexander.keyel@asu.edu, Jennifer H. Fewell, j.fewell@asu.edu, and Jon F. Harrison, j.harrison@asu.edu. Arizona State Univ, School of Life Sciences, P.O. Box 874601, Tempe, AZ

Understanding how newly introduced organisms out-compete present fauna is fundamentally important for reasons ranging from the ecological to the financial. This is particularly true in the case of Africanized honeybees, which have spawned a wave of public apprehension preceding their spread. Some of the mechanisms proposed to contribute to their spread are a higher metabolic rate and greater foraging rate. This study determined whether African and European honeybees raised in the same hive environment differed in metabolism or foraging rate and whether the two characteristics are correlated. Our data showed that African workers possessed higher metabolic rates than European workers, but there were no differences in foraging rate between the two. In addition, there was no relationship between metabolism and foraging rate. However, both Africanized and European pollen foragers had consistently greater foraging rates than nectar foragers. These results indicate that the difference in metabolism between Africanized and European honeybees is consistent across studies, but that behavioral differences are context dependent.


Species 1: Hymenoptera Apidae Apis mellifera (honey bee)
Keywords: foraging effort

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