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Psyche
Volume 2010 (2010), Article ID 384371, 6 pages
http://dx.doi.org/10.1155/2010/384371
Research Article

Several New Aspects of the Foraging Behavior of Osmia cornifrons in an Apple Orchard

1Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
2Breeding Laboratory, Nagano Fruit Tree Experiment Station, Nagano 382-0072, Japan

Received 3 August 2009; Revised 13 November 2009; Accepted 15 December 2009

Academic Editor: Claus Rasmussen

Copyright © 2010 Shogo Matsumoto and Tsutomu Maejima. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We investigated the foraging behavior of Osmia cornifrons Radoszkowski, which is a useful pollinator in apple orchards consisting of only one kind of commercial cultivars such as “Fuji”, and of different types of pollinizers, such as the red petal type, “Maypole” or “Makamik”. It was confirmed that, in terms of the number of foraging flowers per day, visiting flowers during low temperatures, strong wind, and reduced sunshine in an apple orchard, O. cornifrons were superior to honeybees. We indicated that O. cornifrons seemed to use both petals and anthers as foraging indicator, and that not only female, but also males contributed to apple pollination and fertilization by the pollen grains attached to them from visiting flowers, including those at the balloon stage. It was confirmed that O. cornifrons acts as a useful pollinator in an apple orchard consisting of one kind of cultivar with pollinizers planted not more than 10 m from commercial cultivars.