Gottfried Samuel Fraenkel (April 29, 1901 – October 27, 1984) was a German-born American insect physiologist and a professor of entomology at the University of Illinois. He is considered a founding figure in the field of insect nutrition and endocrinology. He also studied insect behavior and wrote an influential book along with D.L. Gunn, ''The Orientation of Animals'' (1940, 1961).
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