Viglietti-Panzica C, Panzica G C, Fiori M G, Calcagni M, Anselmetti G C, Balthazart J
Neurosci Lett. 1986 Feb 28;64(2):129-34. doi: 10.1016/0304-3940(86)90087-x.
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.
对日本鹌鹑视前区 - 下丘脑前部区域的细胞结构分析显示，内侧视前核的总体积存在性别二态性（雄性明显大于雌性）。该区域的不同核团（背侧视前核、视交叉上核）未显示出任何统计学上的显著差异。比较暗体积的分布时，性别相关差异更为一致。这最后一点是由于雄性中含有大量尼氏体的细胞数量多于雌性。目前的研究结果代表了鸟类下丘脑性别二态性的首个实例。
