Reference : Copulatory Behavior Is Controlled by the Sexually Dimorphic Nucleus of the Quail Poa
Scientific journals : Article
Life sciences : Zoology
Social & behavioral sciences, psychology : Neurosciences & behavior
Human health sciences : Endocrinology, metabolism & nutrition
http://hdl.handle.net/2268/28482
Copulatory Behavior Is Controlled by the Sexually Dimorphic Nucleus of the Quail Poa
English
Balthazart, Jacques mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Biologie de la différenciation sexuelle du cerveau >]
Surlemont, C. [> > > >]
Jul-1990
Brain Research Bulletin
25
1
7-14
Yes (verified by ORBi)
International
0361-9230
[en] The medial preoptic nucleus (POM) of the quail preoptic area is sexually dimorphic and testosterone sensitive. Stereotaxic implantation of needles filled with crystalline testosterone demonstrated that the POM is a critical site of steroid action in the control of copulatory behavior. Only implants located in the POM reliably restored the behavior in castrated birds. Implants around the nucleus weakly activated the behavior; those which were distant by more than 200 microns were totally inactive. Electrolytic lesions confirmed the role of the POM in the control of copulatory behavior. The percentage of the POM which was lesioned was highly correlated to the behavioral deficit while the absolute size of the lesion was not. Electrolytic lesions in or around POM also significantly decreased the volume of the nucleus suggesting that the afferents and efferents of the nucleus are required for its full development. The total volume of the POM was correlated with the sexual behavior of the birds. The morphological changes in POM observed following exposure to testosterone probably represent the signature of the behavioral effects of the steroid. The sexually dimorphic testosterone-sensitive POM is therefore an excellent animal model to study the brain-steroid interactions which mediate the activation of male reproductive behavior.
http://hdl.handle.net/2268/28482

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
151_1990 BRB POM sex.pdfPublisher postprint1.04 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.