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Science 14 May 1965:
Vol. 148. no. 3672, pp. 958 - 959
DOI: 10.1126/science.148.3672.958
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Articles

Photoreception and Entrainment of Cockroach Activity Rhythms

Shepherd K. Roberts 1

1 Department of Biology, Temple University, Philadelphia, Pennsylvania

In the cockroach there are two distinct sets of photoreceptors—the compound eyes and the ocelli—which may function as a sensory input whereby circadian locomotor rhythms are entrained by environmental light cycles. Surgical removal of the ocelli did not interfere with normal entrainment, but covering over the compound eyes effected a loss of entrainment.


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Photoreception in Entrainment of Rhythms and Photoperiodic Regulation of Diapause in a Hemipteran, Graphosoma lineatum.
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Neuro-ophthalmology.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)