Two intertidal fish species use visual association learning to track the status of food patches in a radial maze
Two intertidal fish species use visual association learning to track the status of food patches in a radial maze
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DOI：
10.1006/anbe.1999.1351
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发表时间：
2000-03-01
期刊：
影响因子：
2.5
通讯作者：
Blight, CM
中科院分区：
文献类型：
--
作者：
Hughes, RN;Blight, CM
我们测试了十五刺鱼（Spinachia spinachia）和软翅濑鱼（Crenilabrus melops），测试它们将视觉空间线索与径向迷宫中的食物来源联系起来的能力，从而跟踪更新频率和生产力。当所有位置都有食物或空着时，受试者会通过避开最近访问过的位置来表现出赢移或输输行为；因此，这种行为似乎是一种基本特征。这两个物种都很容易学习食物与线索的关联，尽管随着线索多样性的增加，效率较低。他们利用这些信息来区分每日觅食期间和之间更新的食物来源和那些空的食物来源。此外，这两个物种都区分生产力不同的可再生食物来源，优先访问那些含有更多食物的来源。提示角色的逆转导致觅食效率立即下降，随后随着新的食物提示关联的学习而迅速恢复。因此，显然，受试者通过持续采样来跟踪潜在食物来源的状态，并且当适当时持续重新访问首选地点时，可以从胜利转移行为转变为胜利停留行为。食物线索关联的形成，加上采样和灵活使用双赢和双赢行为，将使这些岩石潮间带鱼类能够利用零散分布的食物来源，这些食物来源的状态在潮汐周期中发生变化。 (C) 2000 年动物行为研究协会。
We tested fifteen-spined sticklebacks, Spinachia spinachia, and corkwing wrasse, Crenilabrus melops, for their ability to associate visual spatial cues with food sources in a radial maze and so to track renewal frequencies and productivity. When all locations contained food or were empty, subjects displayed win-shift or lose-shift behaviour by avoiding recently visited locations; this behaviour therefore appeared to be a basic trait. Both species readily learned food-cue associations, although with less efficiency as the diversity of cues increased. They used this information to distinguish food sources renewed within and between daily foraging bouts from those that remained empty. Moreover, both species distinguished between renewable food sources differing in productivity, preferentially visiting those containing more food. Reversal of cue roles caused an immediate decline in foraging efficiency, followed by rapid recovery as new food-cue associations were learned. Evidently, therefore, subjects tracked the status of potential food sources by continued sampling and could switch from win-shift to win-stay behaviour, when preferred locations were persistently revisited, as appropriate. The formation of food-cue associations, together with sampling and flexible use of win-shift and win-stay behaviour, would enable these rocky intertidal fish species to exploit patchily distributed food sources whose status changes during the tidal cycle. (C) 2000 The Association for the Study of Animal Behaviour.