Nervus terminalis lesions: I. No effect on pheromonally induced testosterone surges in the male hamster

Physiology & Behavior
C R Wirsig-Wiechmann

Abstract

The involvement of the nervus terminalis or terminal nerve in the pheromonally induced testosterone surge in the male hamster was investigated. Blood was collected from male hamsters not exposed to odor (baseline), and then a week later from the same hamsters exposed to the odor of vaginal discharge from an estrous female. Terminal nerve lesions, forebrain lesions, or sham surgeries were performed, and blood was collected again with and without odor stimulation. Serum testosterone levels were assessed by radioimmunoassay. None of the surgical procedures interrupted the ability of the male hamsters to demonstrate an increase in serum testosterone following exposure to the odor of an estrous female. We conclude that the terminal nerve is not necessary for this pheromonally mediated neuroendocrine reflex.

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Citations

Jan 1, 1994·Psychoneuroendocrinology·H M CooperM Magnin
Oct 7, 2003·Anatomical Science International·Naoyuki Yamamoto
Feb 4, 1999·Annals of the New York Academy of Sciences·M Meredith
Mar 24, 2006·BMC Neuroscience·Celeste R Wirsig-WiechmannRichard C Feldhoff
Dec 23, 2009·Brain Research·Camille Bond Blake, Michael Meredith
Mar 22, 2000·Biology of Reproduction·E F Rissman, X Li

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