No effect of social group composition or size on hippocampal formation morphology and neurogenesis in mountain chickadees (Poecile gambeli).
No effect of social group composition or size on hippocampal formation morphology and neurogenesis in mountain chickadees (Poecile gambeli).
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DOI：
10.1002/dneu.20795
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发表时间：
2010-06
影响因子：
3
通讯作者：
Pravosudov, Vladimir V.
中科院分区：
文献类型：
--
作者：
Fox, Rebecca A.;Roth, Timothy C., II;LaDage, Lara D.;Pravosudov, Vladimir V.
大脑的可塑性和成人的神经发生可能在许多生态上重要的过程中发挥作用，包括配偶识别、歌曲学习和产生以及空间记忆处理。在许多物种中，物理和社会环境似乎都会影响特定大脑区域的属性(例如，体积、神经元数量和神经发生)。众所周知，海马体对这种变化特别敏感。尽管在许多分类群中，社会分组包括形成雄性和雌性对，但大多数关于社会环境和海马体之间关系的研究通常只考虑独居动物和那些生活在同性群体中的动物。因此，本研究的目的是比较山雀(Poecile Gambeli)的海马结构的体积、海马神经元的总数和海马区未成熟神经元的数量(由双重皮质素表达决定)，这些山雀被安置在雄性和雌性、雄性和雌性同性对以及作为单独个体的群居中。不同的群体在视觉上和身体上是相互隔离的，但在听觉上没有隔离。我们发现，在海马体体积、海马神经元总数或未成熟神经元数量方面，我们的任何一组之间都没有显著差异。因此，我们的结果不支持社会群体组成和/或大小对海马体形态和神经发生有影响的假设。
Brain plasticity and adult neurogenesis may play a role in many ecologically-important processes including mate recognition, song learning and production, and spatial memory processing. In a number of species, both physical and social environments appear to influence attributes (e.g., volume, neuron number, and neurogenesis) of particular brain regions. The hippocampus in particular is well known to be especially sensitive to such changes. Although social grouping in many taxa includes the formation of male and female pairs, most studies of the relationship between social environment and the hippocampus have typically considered only solitary animals and those living in same-sex groups. Thus, the aim of the present study was to compare the volume of the hippocampal formation, the total number of hippocampal neurons, and the number of immature neurons in the hippocampus (as determined by doublecortin expression) in mountain chickadees (Poecile gambeli) housed in groups of males and females, male-female pairs, same-sex pairs of either males or females, and as solitary individuals. The different groups were visually and physically, but not acoustically, isolated from each other. We found no significant differences between any of our groups in hippocampal volume, the total number of hippocampal neurons, or the number of immature neurons. Our results thus provided no support to the hypothesis that social group composition and/or size have an effect on hippocampal morphology and neurogenesis.
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影响因子：
82.9
作者：
Eriksson, PS;Perfilieva, E;Gage, FH
通讯作者：
Gage, FH
DOI：
10.1111/j.1095-8312.2005.00437.x
发表时间：
2005-03-01
影响因子：
1.9
作者：
Baudoin, C;Busquet, N;Todrank, J
通讯作者：
Todrank, J
影响因子：
2.5
作者：
Brown, JP;Couillard-Després, S;Kuhn, HG
通讯作者：
Kuhn, HG
DOI：
10.1073/pnas.91.23.11217
发表时间：
1994-11-08
影响因子：
11.1
作者：
BARNEA, A;NOTTEBOHM, F
通讯作者：
NOTTEBOHM, F
影响因子：
3.4
作者：
Couillard-Despres, S;Winner, B;Aigner, L
通讯作者：
Aigner, L