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Journal of Experimental Biology, Vol 202, Issue 18 2539-2542, Copyright © 1999 by Company of Biologists

JOURNAL ARTICLES

Circadian oscillation of sensitivity of spider eyes: diurnal and nocturnal spiders

S Yamashita and T Nakamura
Biological Laboratory, Kyushu Institute of Design, Shiobaru, Fukuoka 815-8540, Japan. shigeki@kyushu-id.ac.jp

The circadian oscillation of sensitivity of the anterior median eye of a nocturnal spider Araneus ventricosus and that of a diurnal spider Menemerus confusus were examined by recording electroretinograms. The anterior median eye of Araneus ventricosus showed a marked circadian oscillation of sensitivity, but that of Menemerus confusus showed no circadian oscillation.




© The Company of Biologists Ltd 1999