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Roadsigns for rodents

aviour was observed in both males and females.

When a mouse found an area it was interested in, it would collect a white disc and move it there. The mouse would then continue to explore, its movements focused on the discs location. Stopka and Macdonald observed that the mice would continually return to or look for the disc apparently using it to orient themselves. Once the mouse had finished searching a particular area and identified a new point of interest, it would pick up the disc, move it to the new area and repeat the exploration, again using the disc for orientation.

The discs also served as book marks for when activity was interrupted. If a predator were detected, the mice would retreat to shelter. Once the threat was over, the mice returned to the disc.

Stopka and Macdonald hypothesise that these signposts are more effective for wood mice than scent marks: they can be moved at any time and are not detectable by predators.


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Contact: Grace Baynes
press@biomedcentral.com
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BioMed Central
28-Apr-2003


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