The Journal of General Physiology
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The Journal of General Physiology, Vol 59, 213-226, Copyright © 1972 by The Rockefeller University Press

ARTICLE

The Effects of Temperature on the Labellar Chemoreceptors of the Blowfly

S. Uehara 1 and H. Morita 1

1 From the Department of Biology, Faculty of Science, Kyushu University, Fukuoka, Japan

In the labellar chemosensory hairs of the blowfly, Phormia regina Meigen, stationary amplitudes of the slow potentials induced by salt and sugar stimulations were decreased to 50–80% at 12°C of the values measured at 28°C. The amplitudes induced by water did not show any dependence on temperature change. The maximum rate of rise of the receptor potentials was strongly increased with rising temperature. The value of Kb, the apparent Michaelis constant, was less by a factor of six at 28°C compared to the 12°C value for the sugar receptor.

Submitted on July 13, 1971


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