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Journal of Experimental Biology 97,187-195 (1982)
Published by Company of Biologists 1982

Importance of Calcium And Magnesium Ions for Postexcitatory Hypersensitivity in the Jumping Spider (Menemerus) Eye

SHIGEKI YAMASHITA 1 and HIDEKI TATEDA 1

1 Department of Biology, Faculty of Science, Kyushu University 33 Fukuoka 812, Japan

Hypersensitivity of the anterior median eye of the jumping spider Menemerus confusus, following illumination, was unaffected by the concentration of Na+ or K+, was depressed by increase of Ca2+ concentration, and was dependent upon the presence of Mg2+. Sensitivity of the dark-adapted eye was also inversely related to Ca2+ concentration, but to a lesser extent.

Submitted on May 6, 1981






© The Company of Biologists Ltd 1982