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CO2 sensitive receptors on labial palps of Rhodogastria moths (Lepidoptera: Arctiidae) : physiology, fine structure and central projection

Title data

Bogner, Franz X. ; Boppré, Michael ; Ernst, Klaus-Dieter ; Boeckh, Jürgen:
CO2 sensitive receptors on labial palps of Rhodogastria moths (Lepidoptera: Arctiidae) : physiology, fine structure and central projection.
In: Journal of Comparative Physiology A. Vol. 158 (1986) Issue 6 . - pp. 741-749.
ISSN 1432-1351
DOI: https://doi.org/10.1007/BF01324818

Abstract in another language

The tips of the labial palps of Rhodogastria possess a pit housing uniform sensilla (Fig. 1), histologically characterized by wall-pores and receptor cells with lamellated outer dendrites Fig. 2). The receptor cell axons project to glomeruli in the deutocerebrum (cf. Fig. 3) which are not innervated by antennal receptors. From their histology as well as from their central projection these sense organs are identical with palpal pit organs of other Lepidoptera (Lee et al. 1985; Kent et al. 1986; Lee and Altner 1986).Physiologically, the palp-pit receptors respond uniformly; they are most excitable by stimulation with carbon dioxide (Fig. 6) while they exhibit relatively moderate responses to various odorants (Fig. 4). The responses to CO2 (Fig. 7) show a steep dose-response characteristic. In ambient atmosphere (i.e., ca. 0,03% CO2) the cells are in an excited condition already; the seeming ´spontaneous activity´ exhibited in air is decreased if the preparation is kept under N2 or O2 or CO2-free air (Figs. 7, 10). There its hardly any adaptation of the responses to continuous or repeated stimulation (Fig. 8). Perhaps CO2 sensitivity is correlated with sensilla characterized by both wall-pores and lamellated dendrites. Pilot tests indicate that CO2 perception might be widespread in the Lepidoptera (cf. Fig. 12), but the biological significance remains obscure.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER24558
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Didactics of Biology > Chair Didactics of Biology - Univ.-Prof. Dr. Franz Xaver Bogner
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Didactics of Biology
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 18 Jan 2016 08:02
Last Modified: 18 Jan 2016 08:02
URI: https://eref.uni-bayreuth.de/id/eprint/29803