Universität zu Köln

Harris, Christian M., Dinges, Gesa F. ORCID: 0000-0002-1759-738X, Haberkorn, Anna, Gebehart, Corinna ORCID: 0000-0003-4426-6225, Bueschges, Ansgar and Zill, Sasha N. (2020). Gradients in mechanotransduction of force and body weight in insects. Arthropod Struct. Dev., 58. OXFORD: ELSEVIER SCI LTD. ISSN 1873-5495

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Abstract

Posture and walking require support of the body weight, which is thought to be detected by sensory receptors in the legs. Specificity in sensory encoding occurs through the numerical distribution, size and response range of sense organs. We have studied campaniform sensilla, receptors that detect forces as strains in the insect exoskeleton. The sites of mechanotransduction (cuticular caps) were imaged by light and confocal microscopy in four species (stick insects, cockroaches, blow flies and Drosophila). The numbers of receptors and cap diameters were determined in projection images. Similar groups of receptors are present in the legs of each species (flies lack Group 2 on the anterior trochanter). The number of receptors is generally related to the body weight but similar numbers are found in blow flies and Drosophila, despite a 30 fold difference in their weight. Imaging data indicate that the gradient (range) of cap sizes may more closely correlate with the body weight: the range of cap sizes is larger in blow flies than in Drosophila but similar to that found in juvenile cockroaches. These studies support the idea that morphological properties of force-detecting sensory receptors in the legs may be tuned to reflect the body weight. (C) 2020 The Authors. Published by Elsevier Ltd.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Harris, Christian M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dinges, Gesa F. UNSPECIFIED orcid.org/0000-0002-1759-738X UNSPECIFIED Haberkorn, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Gebehart, Corinna UNSPECIFIED orcid.org/0000-0003-4426-6225 UNSPECIFIED Bueschges, Ansgar UNSPECIFIED UNSPECIFIED UNSPECIFIED Zill, Sasha N. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-321561
DOI:	10.1016/j.asd.2020.100970
Journal or Publication Title:	Arthropod Struct. Dev.
Volume:	58
Date:	2020
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	1873-5495
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TIBIAL CAMPANIFORM SENSILLA; GOLGI TENDON ORGANS; PROXIMAL LEG JOINTS; STICK INSECT; CENTRAL PROJECTIONS; SENSE-ORGANS; FLIGHT INITIATION; LOAD; DROSOPHILA; COCKROACH Multiple languages Entomology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/32156