tropotaxis

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tropotaxis

the movement or orientation of an organism in relation to a source of stimulation (especially light).
References in periodicals archive ?
The behavior of this robot changed in different regions of the plume as it was executing a simple tropotactic tracking algorithm.
When SIF is large, the animal samples broadly across the plume and has a high probability of detecting an edge beneficial for tropotactic orientation.
This latter observation may explain why crabs and lobsters seem to rely on tropotactic comparisons, whereas moths have no similar mechanism.