Kärcher, Martin H and Ratnieks, Francis L W (2009) Standing and hovering guards of the stingless bee Tetragonisca angustula complement each other in entrance guarding and intruder recognition. Journal of Apicultural Research, 48 (3). pp. 209-214. ISSN 0021-8839

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Abstract

Previous research has shown that colonies of the stingless bee Tetragonisca angustula have hovering guards that can detect allospecific intruder bees with volatile odours or different body colour, but conspecific intruders were not detected. Here we show that T. angustula colony entrances are also defended by guards standing on the entrance tube. These standing guards made very few errors in recognition, accepting 100% of the nestmates and rejecting 92% of the conspecific non-nestmates presented to them at the nest entrance. In addition, 87% of the nestmates contaminated with odours from the stingless bee Scaptotrigona bipunctata were rejected. Standing guards also reacted to volatile odours from the stingless bees S. bipunctata and Melipona rufiventris by switching to hovering. The defence reaction, i.e. the increase in the number of hovering guards, was not, however, comparable to the reaction previously reported to citral, the propaganda chemical used by the obligate robber bee Lestrimelitta limao when attacking other bee colonies.

Item Type:	Article
Schools and Departments:	School of Life Sciences > Evolution, Behaviour and Environment
Depositing User:	Martin Kaercher
Date Deposited:	06 Feb 2012 20:40
Last Modified:	22 Mar 2012 11:23
URI:	http://sro.sussex.ac.uk/id/eprint/27363

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