Development of specific responses in antennal taste hairs after ecdysis. An electrophysiological investigation of the cockroach, Periplaneta brunnea

Hansen-Delkeskamp, Elisabeth (1998) Development of specific responses in antennal taste hairs after ecdysis. An electrophysiological investigation of the cockroach, Periplaneta brunnea. JOURNAL OF INSECT PHYSIOLOGY, 44 (7-8). pp. 659-666. ISSN 0022-1910, 1879-1611

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Abstract

Spike generation in cockroach antennal taste hairs of nymphs appears to follow the same rules as in adults analysed previously. After ecdysis, taste hairs on the proximal segments responded earlier than those on distal ones. Shorter hairs became active before longer ones. The mechanoreceptor responded before the chemoreceptors. During a transient period, 3-5 hours after ecdysis, all four chemoreceptors and also the mechanoreceptor were sensitive to 150 mM KCl. Spikes elicited by 75 mM KCl were generated predominantly in the outer dendritic segments. They did not differ in shape and frequency when 60 mM sucrose was added. The earliest sign of a specific reaction to sucrose was observed approximately 4-5 hours after ecdysis, when the mixture of sucrose and KCI elicited more spikes than KCI alone. (C) 1998 Elsevier Science Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: INSECT MECHANOSENSORY NEURON; FINE-STRUCTURE; AMERICANA; BURM; cockroach; moult; antennae; taste hair; spike generation
Subjects: 500 Science > 590 Zoological sciences
Divisions: Biology, Preclinical Medicine > Institut für Zoologie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 23 Feb 2023 11:36
Last Modified: 23 Feb 2023 11:36
URI: https://pred.uni-regensburg.de/id/eprint/49701

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