Insect navigational strategy based on memory

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  • 昆虫のナビゲーション戦略を支える記憶
  • コンチュウ ノ ナビゲーション センリャク オ ササエル キオク

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Abstract

Central place foragers such as ants and bees are prominent navigators displaying a variety of navigational systems. These navigational systems are roughly classified into three types, route-following system, such as trail pheromone; path integration system that is dependent on compass and odometer; and map-based system, based on memories of visual landmarks. Recent work on ants and bees has revealed a major role of long-term memories in the navigational systems. For example, the directional and odometric memories are acquired perfectly in no more than one trail in the path integration system. Navigators using the map-based system retain the visual landmark memories as “snap-shots” for a few days or a month, and recall the right memory in the appropriate context. Honeybees might assemble a cognitive map to integrate their landmark memories. In the present review, I emphasize how traits of the navigational memory such as acquisition, retention, recall and integration, are dependent on the navigation systems and behavioural backgrounds of the insect navigators.

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