[Pollinator] Fwd: Anthidium

[Ladadams at aol.com]

____________________________________
 From: chip at ku.edu
To: Ladadams at aol.com
Sent: 1/26/2011 10:46:23 P.M.  Pacific Standard Time
Subj: Fwd: Anthidium


David sent me the below. It is likely hbs are also repelled by the scent  
of Anthidium.





Date: Wed, 26 Jan 2011 17:15:55 -0700
To:  Chip Taylor <chip at ku.edu>
From: David Inouye  <inouye at umd.edu>
Subject: Anthidium


Gawleta, N., Y. Zimmerman, et al. (2005).  "Repellent foraging scent 
recognition across bee families."  Apidologie(36): 325-330.


Honeybees and bumblebees avoid probing flowers that have been  recently 
depleted by conspecifics, presumably repelled by odours deposited  by the 
previous visitor (foraging scent marks). Here we show that females  of the 
solitary wool-carder bee Anthidium manicatum (Megachilidae)  discriminate against 
previously visited inflorescences (Stachys  officinalis), and that 
discrimination is equally strong regardless of  whether the previous visitor is 
conspecific or belongs to a different bee  family (Bombus terrestris, Apidae). 
Conversely, workers of B. terrestris  responded differentially to different 
previous visitors, with previous  visits by A. manicatum eliciting the most 
pronounced repellent effect.  This finding may have resulted from the 
bumblebees' avoidance of impending  aggression by territorial A. manicatum males. 
Our results emphasize that  foraging scent mark recognition is not necessarily 
linked to sociality,  but a trait of individuals foraging in an 
unpredictable flower visitor  community.





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