A sexually dimorphic nucleus in the quail preoptic area.

Animals; Coturnix/anatomy & histology; Female; Male; Preoptic Area/anatomy & histology; Quail/anatomy & histology; Sex Characteristics; Suprachiasmatic Nucleus/anatomy & histology

Abstract :

[en] The cytoarchitectural analysis of the preoptic-anterior hypothalamic region of the Japanese quail reveals a sexual dimorphism in the total volume of the medial preoptic nucleus (significantly larger in males than in females). Different nuclei of the region (dorsal preopticus, suprachiasmaticus) do not show any statistically significant difference. The sex-related difference is more consistent comparing the distribution of dark volume. This last is due to a larger number of cells containing high amount of Nissl's substance in male than in female. Present findings represent the first example of sexual dimorphism in the avian hypothalamus.

Disciplines :

Zoology
Neurosciences & behavior

Author, co-author :

Viglietti-Panzica, C.

Panzica, G. C.

Fiori, M. G.

Calcagni, M.

Anselmetti, G. C.

Balthazart, Jacques

Language :

English

Title :

A sexually dimorphic nucleus in the quail preoptic area.

Publication date :

1986

Journal title :

Neuroscience Letters

ISSN :

0304-3940

eISSN :

1872-7972

Publisher :

Elsevier Scientific Publishers Ireland, Limerick, Ireland

Volume :

Issue :

Pages :

129-34

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 18 July 2011

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Scopus citations^®

160

Scopus citations^®
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OpenCitations

141

OpenAlex citations

169

Bibliography

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