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Vasotocinergic innervation of the septal region in the Japanese quail: sexual differences and the influence of testosterone |
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| Authors: | C Viglietti-Panzica G C Anselmetti J Balthazart N Aste G C Panzica |
| Institution: | (1) Department of Human Anatomy and Physiology, Section Neuroanatomy and Neuroembryology, University of Torino, c.so M. D'Azeglio 52, 1-10126 Torino, Italy;(2) Laboratory of General and Comparative Biochemistry, University of Liège, Liège, Belgium |
| Abstract: | Summary Vasotocin (VT)-immunoreactive fibres were observed in the nuclei of the quail (Coturnix coturnix japonica) septal region. Their distribution in the nucleus septalis lateralis (SL) and the nucleus striae terminalis (nST) was sexually dimorphic: a dense network of immunoreactive fibres was seen in adult sexually stimulated males but not in females. Experimental manipulation of the hormonal environment influenced this distribution only in males. VT immunoreactivity was absent in SL and nST when male quail were exposed to a shortday photoperiod or castrated. The immunoreactivity was restored to its original level in castrated males by silastic implants of testosterone. |
| Keywords: | Sexual dimorphism Vasotocin Testosterone Nucleus septalis lateralis Nucleus striae terminalis Quail |
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