6
$\begingroup$

I took a picture of a snail whose tracks are not continuous. What is the reason? Does the snail lift itself from the ground during its motion?

snail tracks

$\endgroup$
  • $\begingroup$ something to do with a rythmic organ contraction? $\endgroup$ – com.prehensible Mar 15 '18 at 16:38
6
$\begingroup$

During particularly dry weather some snails will only touch the ground with part of their "foot" at once. In effect moving more like a desert snake in the image below. They do this to reduce moisture loss. Even though it is still a continuous motion it leaves a discontinuous trail. the same number of these points of contact are present the entire time at no point does it leave contact, think of it more like high stepping. This behavior is sometimes called "jumping" even though it has nothing to do with actual jumping.

enter image description here

http://www.molluscs.at/gastropoda/index.html?/gastropoda/morphology/locomotion.html

$\endgroup$
  • $\begingroup$ thanks, do you know of any videos showing these different types of motion? $\endgroup$ – eyal Mar 18 '18 at 16:02
  • $\begingroup$ sorry no I don't $\endgroup$ – John Mar 19 '18 at 14:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.