路标影响高体鳑鲏的空间学习与记忆

Influence of landmark in spatial learning and memory in Rhodeus ocellatus

使用采集于湖北省大冶市保安湖的16尾性成熟的雌性高体鳑鲏为实验对象,利用T形迷宫装置,研究在有一个标记物和无标记物情况下高体鳑鲏的空间学习与记忆能力。结果表明高体鳑鲏具有很好的空间学习与记忆能力。而且在有一个标记物(视觉提示)存在时高体鳑鲏学习能力较强,这可能揭示出不同的学习策略对记忆形成快慢有影响,路标的视觉提示作用能够起到比自身方向感更强烈的刺激记忆形成的作用。

Two spatial strategies, response strategy and place strategy, are used to solve spatial tasks by animals. Studies of spatial cognition in fishes were rather scarce. As fish with special reproduc- tion ecology, bitterling was expected to be a good candidate for studying the spatial cognition and strate- gies. In the present study, the capability of spatial learning and memory of Rhodeus ocellatus was studied through comparative experiments with one landmark and with no landmark. The results showed that the R. ocellatus possessed good spatial cognition ability. R. ocellatus could perform better with one landmark in spatial learning and memory, suggesting that different cognition strategies affect the rate of memory formation and the visual cues may play a better role than the fishes＇ own sense of direction in promoting memory formation.