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首页> 外文期刊>Marine biology >The yellow stingray (Urobatlsjamaicensis) can use magnetic field polarity to orient in space and solve a maze
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The yellow stingray (Urobatlsjamaicensis) can use magnetic field polarity to orient in space and solve a maze

机译:黄色的黄貂鱼(Urobatlsjamaicensis)可以利用磁场极性在空间中定向并解决迷宫问题

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摘要

Elasmobranch fishes (sharks, skates, and rays) have been hypothesized to use the geomagnetic field (GMF) to maintain a sense of direction as they navigate throughout their environment. However, it is difficult to test the sensory ecology and spatial orientation ability of large highly migratory fishes in the field. Therefore, we performed behavioral conditioning experiments on a small magnetically sensitive species, the yellow stingray (Urobatis jamaicensis), in the laboratory. We trained individuals to use the polarity, or the north-south direction, of the GMF as a cue to orient in space and navigate a T-maze for a food reward. Subjects were split into two groups that learned to associate the direction of magnetic north or south as the indicator of the reward location. Stingrays reached the learning criterion within a mean (+/- SE) of 158.6 +/- 28.4 trials. Subjects were then reverse trained to use the previously unrewarded magnetic stimulus of the opposite polarity as the new cue for the reward location. Overall, the stingrays reached the reversal criterion in significantly fewer trials (120 +/- 13.8) compared to the initial procedure. These data show that the yellow stingray can learn to associate changes in GMF polarity with a reward, relearn a behavioral task when the reward contingency is modified, and learn a reversal procedure faster than the initial association. These data support the idea that the yellow stingray, and perhaps other elasmobranchs, might use GMF polarity as a cue to orient and maintain a heading during navigation.
机译:据推测,Elasmobranch鱼(鲨鱼,溜冰鞋和rays鱼)在整个环境中导航时都使用地磁场(GMF)保持方向感。但是,很难在野外测试大型高度gr游鱼类的感官生态学和空间定向能力。因此,我们在实验室中对一个小的磁敏感物种黄貂鱼(Urobatis jamaicensis)进行了行为条件实验。我们训练了个人使用GMF的极性或南北方向作为在空间中定向的线索,并操纵T型迷宫获得食物奖励。受试者分为两组,他们学会了将磁北或磁南的方向关联为奖励位置的指示。黄貂鱼在158.6 +/- 28.4试验的平均值(+/- SE)内达到了学习标准。然后,对受试者进行反向训练,以使用先前未获得奖励的相反极性的磁刺激作为奖励位置的新提示。总体而言,与初始程序相比,黄貂鱼在较少的试验中(120 +/- 13.8)达到了逆转标准。这些数据表明,黄貂鱼可以学会将GMF极性的变化与奖赏联系起来,当奖赏偶然性被修改时可以重新学习行为任务,并且学习逆向过程的速度比最初的联想要快。这些数据支持以下想法:黄色的黄貂鱼,可能还有其他的弹s可能会使用GMF极性作为在导航过程中定向和保持航向的提示。

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  • 来源
    《Marine biology》 |2020年第3期|36.1-36.10|共10页
  • 作者单位

    Florida Atlantic Univ Dept Biol Sci 777 Glades Rd Boca Raton FL 33431 USA|Washington Univ Dept Otolaryngol Sch Med 660 South Euclid Ave Campus Box 8115 St Louis MO 63110 USA;

    Florida Atlantic Univ Dept Biol Sci 777 Glades Rd Boca Raton FL 33431 USA;

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