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migration of ants


Migration of ants

Several kinds of ants dogs and other animals navigate by their chemistry. They locate their way  by following the scent and chemical trails they have laid down while passing that way and reach their destination.

A fascinating example of this is of a Tunisian desert ant which can wander across the desert sands, for a distance of up to 50 metres until it gets its food, upon it bites a piece of it  and retreats its path back to its nest , that is a hole of not more than 1 millimetre in diameter. Studies by R Wehner and M V Srinivasan 1980 - 81 have shown that if the Tunisian ant was  moved off after finding its food to eat, it will head off, in exactly to the direction it should have gone , if it had not been moved and stop there in dismay to search for the nest. That means the ant remembers exactly the precise direction in which it has to go and the distance it has to cover to reach its  home.

Apollo astronauts plot their course to the moon using  arithmetic  calculation trignometry, .They  need good memory power, good sense of speed and time for their expedition. Same with marine navigators .It is intriguing, this small desert ant even in spite of not having all these,can reach exact destination.

Link to further reading.

Those Amazing Flying Mathematicians
https://www.maa.org/external_archive/devlin/devlin_10_99.html



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