Eyestalk Movements Induced by Polarized Light in the Ghost Crab, Ocypode quadrata

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Science  08 Sep 1961:
Vol. 134, Issue 3480, pp. 675-676
DOI: 10.1126/science.134.3480.675


Differential visual sensitivity to vertical and horizontal linear polarization is shown in the light-induced eyestalk deviations of Ocypode quadrata. Responses with the e-vector vertical averaged about 6° greater than those with e-vector horizontal. This difference approximates the relative eyestalk deviation induced by unpolarized light intensities having a ratio of 3:1