This study describes how three individual fish,
Atlantic cod (Gadus morhua L.), developed a novel
behaviour and learnt to use a dorsally attached external tag
to activate a self-feeder. This behaviour was repeated up to
several hundred times, and over time these fish fine-tuned
the behaviour and made a series of goal-directed coordinated
movements needed to attach the feeder's pull string
to the tag and stretch the string until the feeder was activated.
These observations demonstrate a capacity in cod to
develop a novel behaviour utilizing an attached tag as a
tool to achieve a goal. This may be seen as one of the very
few observed examples of innovation and tool use in fish.See Millot et al 2013
http://link.springer.com/article/10.1007/s10071-013-0710-3
↧
