Night-time neuronal activation of Cluster N in a day- and night-migrating songbird.
Night-time neuronal activation of Cluster N in a day- and night-migrating songbird.
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DOI：
10.1111/j.1460-9568.2010.07311.x
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发表时间：
2010-08
期刊：
影响因子：
--
通讯作者：
Mouritsen H
中科院分区：
文献类型：
--
作者：
Zapka M;Heyers D;Liedvogel M;Jarvis ED;Mouritsen H
夜间迁徙鸣禽的磁罗盘定位需要N簇（一簇前脑区域）发挥作用。集群N通过离丘脑途径从眼睛接收输入，在夜间执行磁罗盘引导行为的夜间迁徙者中显示出高神经元活性，而在白天没有观察到激活，并且遮盖鸟类的眼睛强烈降低了神经元激活。这些发现表明，集群N处理光依赖的磁罗盘信息在夜间迁徙的鸣禽。本研究的目的是测试集群N是否在白天迁移期间活跃。我们使用基于ZENK激活的行为分子作图来研究集群N是否在草地鸫（Anthus pratensis）（一种昼夜迁徙物种）中活跃。我们发现，集群N的草甸？这些数据表明，在白天和夜间迁徙的草甸云雀，光依赖的磁罗盘，这需要一个积极的集群N，可能只在夜间使用，而另一种磁感应机制和/或其他参考系统（S），如太阳或偏振光，可能被用作白天的主要方向线索。
Magnetic compass orientation in a night-migratory songbird requires that Cluster N, a cluster of forebrain regions, is functional. Cluster N, which receives input from the eyes via the thalamofugal pathway, shows high neuronal activity in night-migrants performing magnetic compass-guided behaviour at night, whereas no activation is observed during the day, and covering up the birds’ eyes strongly reduces neuronal activation. These findings suggest that Cluster N processes light-dependent magnetic compass information in night-migrating songbirds. The aim of this study was to test if Cluster N is active during daytime migration. We used behavioural molecular mapping based on ZENK activation to investigate if Cluster N is active in the meadow pipit (Anthus pratensis), a day- and night-migratory species. We found that Cluster N of meadow pipits shows high neuronal activity under dim-light at night, but not under full room-light conditions during the day. These data suggest that, in day- and night-migratory meadow pipits, the light-dependent magnetic compass, which requires an active Cluster N, may only be used during night-time, whereas another magnetosensory mechanism and/or other reference system(s), like the sun or polarized light, may be used as primary orientation cues during the day.
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影响因子：
3.7
作者：
Feenders, Gesa;Liedvogel, Miriam;Rivas, Miriam;Zapka, Manuela;Horita, Haruhito;Hara, Erina;Wada, Kazuhiro;Mouritsen, Henrik;Jarvis, Erich D.
通讯作者：
Jarvis, Erich D.
鸟类磁感应的化学罗盘模型
影响因子：
64.8
作者：
Maeda, Kiminori;Henbest, Kevin B.;Hore, P. J.
通讯作者：
Hore, P. J.
影响因子：
1.3
作者：
HELBIG, AJ;ORTH, G;WILTSCHKO, W
通讯作者：
WILTSCHKO, W
影响因子：
3.7
作者：
Liedvogel, Miriam;Maeda, Kiminori;Henbest, Kevin;Schleicher, Erik;Simon, Thomas;Timmel, Christiane R.;Hore, P. J.;Mouritsen, Henrik
通讯作者：
Mouritsen, Henrik
影响因子：
3.7
作者：
Heyers D;Manns M;Luksch H;Güntürkün O;Mouritsen H
通讯作者：
Mouritsen H