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Physiol Behav

Title:		Male isolation: a behavioral representation of the pheromonal 'female effect' in donkey (Equus asinus)
Author(s):		Carluccio A; Contri A; Amendola S; De Angelis E; De Amicis I; Mazzatenta A;
Address:		"Department of Veterinary Clinical Science, Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy"
Journal Title:		Physiol Behav
Year:		2013
Volume:		20130501
Issue:
Page Number:		1 - 7
DOI:		10.1016/j.physbeh.2013.04.005
ISSN/ISBN:		1873-507X (Electronic) 0031-9384 (Linking)
Abstract:		"The appearance of a decisive component of the sexual response to chemosexual signals in the male donkey was investigated through a comparison of the variations in the time-span of the behavioral classes and units for the natural versus induced breeding seasons. The results demonstrate that there are significant variations in the length of the appetitive sexual behavior (ASB) and consummatory sexual behavior (CSB) under these two reproductive conditions. These differences are analyzed for the ASB, which is adaptable, compared with the stereotyped CSB. For the ASB, male isolation is the most represented behavior of both the natural and induced breeding seasons. This is the key that allows the passage from courtship, which consists of appetitive behaviors, to copula, the consummatory behavior. This isolation appears to provide the time required to activate the hypothalamic-pituitary-gonadal axis through the chemosexual pathway of pheromone stimuli. This isolation is lengthened with induced breeding, supporting the hypothesis of the activation of the neuroendocrine system, which is not 'primed' outside the natural breeding season, and which is necessary to release the stereotyped CSB"
Keywords:		"Aggression/physiology Animals Appetitive Behavior/physiology Behavior, Animal/*physiology Consummatory Behavior/physiology Environment Equidae/*physiology Estrus/physiology Female Male Pheromones/*physiology Photoperiod Seasons Sexual Behavior, Animal/phy;"
Notes:		"MedlineCarluccio, Augusto Contri, Alberto Amendola, Sonia De Angelis, Elisabetta De Amicis, Ippolito Mazzatenta, Andrea eng 2013/05/07 Physiol Behav. 2013 Jun 13; 118:1-7. doi: 10.1016/j.physbeh.2013.04.005. Epub 2013 May 1"