Document Detail

Disc size regulation in the brood cell building behavior of leaf-cutter bee, Megachile tsurugensis.
MedLine Citation:
PMID:  17563863     Owner:  NLM     Status:  MEDLINE    
The leaf-cutter bee, Megachile tsurugensis, builds a brood cell in a preexisting tunnel with leaf discs that she cuts in decreasing sizes and assembles them like a Russian matryoshka doll. By experimentally manipulating the brood cell, it was investigated how she regulates the size of leaf discs that fit in the brood cell's internal volume. When the internal volume was artificially increased by removing a bulk of leaf discs, she decreased the leaf disc size, although increasing it would have made the leaf disc more fitting in the increased internal volume. As a reverse manipulation, when the internal volume was decreased by inserting a group of inner layers of preassembled leaf discs to a brood cell, she decreased the leaf disc size, so that the leaf disc could fit in the decreased internal volume. These results suggest that she uses at least two different mechanisms to regulate the disc size: the use of some internal memory about the degree of building work accomplished in the first and of sensory feedback of dimensional information at the construction site in the second manipulation, respectively. It was concluded that a stigmergic mechanism, an immediate sensory feedback from the brood cell changed by the building work, alone cannot explain the details of the bee's behavior particularly with respect to her initial response to the first manipulation. For a more complete explanation of the behavior exhibited by the solitary bee, two additional behavioral elements, reinforcement of building activity and processing of dimensional information, were discussed along with stigmergy.
Jong-yoon Kim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-06-12
Journal Detail:
Title:  Die Naturwissenschaften     Volume:  94     ISSN:  0028-1042     ISO Abbreviation:  Naturwissenschaften     Publication Date:  2007 Dec 
Date Detail:
Created Date:  2007-11-16     Completed Date:  2008-04-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0400767     Medline TA:  Naturwissenschaften     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  981-90     Citation Subset:  IM    
Instruments and Control Laboratory, National Agriculture Research Center, 3-1-1 Kannondai, Tsukuba, Ibaraki, Japan.
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MeSH Terms
Bees / physiology*
Behavior, Animal
Housing, Animal
Nesting Behavior*
Plant Stems

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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