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PLoS One

Title:		Social modulation of stress reactivity and learning in young worker honey bees
Author(s):		Urlacher E; Tarr IS; Mercer AR;
Address:		"Department of Zoology, 340 Great King Street, PO Box 56, Dunedin 9054, New Zealand"
Journal Title:		PLoS One
Year:		2014
Volume:		20141203
Issue:		12
Page Number:		e113630 -
DOI:		10.1371/journal.pone.0113630
ISSN/ISBN:		1932-6203 (Electronic) 1932-6203 (Linking)
Abstract:		"Alarm pheromone and its major component isopentylacetate induce stress-like responses in forager honey bees, impairing their ability to associate odors with a food reward. We investigated whether isopentylacetate exposure decreases appetitive learning also in young worker bees. While isopentylacetate-induced learning deficits were observed in guards and foragers collected from a queen-right colony, learning impairments resulting from exposure to this pheromone could not be detected in bees cleaning cells. As cell cleaners are generally among the youngest workers in the colony, effects of isopentylacetate on learning behavior were examined further using bees of known age. Adult workers were maintained under laboratory conditions from the time of adult emergence. Fifty percent of the bees were exposed to queen mandibular pheromone during this period, whereas control bees were not exposed to this pheromone. Isopentylacetate-induced learning impairments were apparent in young (less than one week old) controls, but not in bees of the same age exposed to queen mandibular pheromone. This study reveals young worker bees can exhibit a stress-like response to alarm pheromone, but isopentylacetate-induced learning impairments in young bees are suppressed by queen mandibular pheromone. While isopentylacetate exposure reduced responses during associative learning (acquisition), it did not affect one-hour memory retrieval"
Keywords:		"Animals Bees/*physiology Behavior, Animal Learning Mandible/metabolism Pentanols/*metabolism Pheromones/*metabolism Social Behavior;"
Notes:		"MedlineUrlacher, Elodie Tarr, Ingrid S Mercer, Alison R eng Research Support, Non-U.S. Gov't 2014/12/04 PLoS One. 2014 Dec 3; 9(12):e113630. doi: 10.1371/journal.pone.0113630. eCollection 2014"