Species-specific differences in sensorimotor adaptation are correlated with differences in social structure.
Species-specific differences in sensorimotor adaptation are correlated with differences in social structure.
复制标题
感觉运动适应的物种特异性差异与社会结构的差异相关。
DOI：
10.1007/s00359-005-0006-4
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Zakon,HaroldH
中科院分区：
文献类型：
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作者：
Oestreich,Jörg;Zakon,HaroldH
在这里，我们报告的强度和长期的感觉运动适应弱电鱼的输出的持续时间的物种差异。这种适应性是由脑起搏核内在兴奋性的变化产生的;这种变化是一种与社会结构相关的记忆形式。一条弱电的鱼可能会被另一条鱼类似的电器官放电（EOD）频率所干扰，并通过瞬时提高自己的发射频率来防止干扰，这种行为称为干扰回避反应（Jamming avoidance response，EOD）。干扰需要激活NMDA受体，并且在干扰刺激后的许多小时内，延长的干扰性能导致鱼的EOD频率的长期频率升高（LTFE）。我们发现，LTFE是较强的浅水种（Eigenmannia virescens）遇到干扰同种的概率较高，相比，一个孤独的物种（Apteronotus leptorhynchus）。此外，LTFE在Eigenmannia中持续存在，而在Apteronotus中在5-9 h内衰减。
Here, we report a species difference in the strength and duration of long-term sensorimotor adaptation in the electromotor output of weakly electric fish. The adaptation is produced by changes in intrinsic excitability in the electromotor pacemaker nucleus; this change is a form of memory that correlates with social structure. A weakly electric fish may be jammed by a similar electric organ discharge (EOD) frequency of another fish and prevents jamming by transiently raising its own emission frequency, a behavior called the jamming avoidance response (JAR). The JAR requires activation of NMDA receptors, and prolonged JAR performance results in long-term frequency elevation (LTFE) of a fish’s EOD frequency for many hours after the jamming stimulus. We find that LTFE is stronger in a shoaling species (Eigenmannia virescens) with a higher probability of encountering jamming conspecifics, when compared to a solitary species (Apteronotus leptorhynchus). Additionally, LTFE persists inEigenmannia, whereas, it decays over 5–9 h inApteronotus.