Diurnal Cycles and Cannibalism in Planaria

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Science  24 Jun 1960:
Vol. 131, Issue 3417, pp. 1884-1885
DOI: 10.1126/science.131.3417.1884


Dugesia tigrina attacks Cura foremani under certain circumstances. The length of fast prior to the attack and diurnal rhythms are involved in evoking such behavior.