Olfactory bulb removal lengthens the period of circannual rhythms and disrupts hibernation in golden-mantled ground squirrels.
Olfactory bulb removal lengthens the period of circannual rhythms and disrupts hibernation in golden-mantled ground squirrels.
复制标题
去除嗅球会延长金毛地松鼠的昼夜节律，并扰乱冬眠。
DOI：
10.1016/0006-8993(93)90765-f
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发表时间：
1993
期刊：
影响因子：
2.9
通讯作者：
Dark,J
中科院分区：
文献类型：
--
作者：
Ruby,NF;Zucker,I;Licht,P;Dark,J
去除嗅球延长了雄性金背地松鼠体重和血浆睾酮（T）浓度的昼夜节律（汽车），但没有改变它们的表达。球切除动物的CAR期比假手术动物长约2个月。体质量和T的峰值不受球切除术的影响。所有神经系统完整，但只有50%的球切除，松鼠显示正常的冬眠模式。我们的结论是嗅球不是必要的circuncannual振荡器的网站。地松鼠的生殖周期和冬眠周期受嗅球的调制比几个noncircannual仓鼠物种的相应的节奏。
Removal of the olfactory bulbs lengthened the period of circannual rhythms (CARs) of body mass and plasma testosterone (T) concentrations in male golden-mantled ground squirrels, but did not otherwise alter their expression. The period of the CAR was approximately 2 months longer in bulbectomized than in sham-operated animals. Peak values of body mass and T were unaffected by bulbectomy. All neurologically intact, but only 50% of bulbectomized, squirrels displayed normal hibernation patterns. We conclude that the olfactory bulbs are not the site of essential circannual oscillators. Circannual reproductive and hibernation cycles of ground squirrels are less subject to modulation by the olfactory bulbs than are the corresponding rhythms of several non-circannual hamster species.