SUMMARY: We examined the phototactic behaviour of individual amoebae of four mutants which were altered in their slug phototaxis and thermotaxis. All four mutants were found to be also altered in amoebal phototaxis. This indicates that sensory processing in amoebae and slugs is not independent. The mutants were placed in three phenotypic classes. At suboptimal light intensities amoebal phototaxis is bidirectional, deviating right and left from the direction of incident light. Bimodality could be explained by assuming that spatial light gradients produced by internal absorption and scattering during phototaxis depend on the cell geometry in relation to the light direction.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error