Universität zu Köln

Goldammer, Jens ORCID: 0000-0002-5623-8339 and Duerr, Volker (2018). Proprioceptive input to a descending pathway conveying antennal postural information: Terminal organisation of antennal hair field afferents. Arthropod Struct. Dev., 47 (5). S. 465 - 482. OXFORD: ELSEVIER SCI LTD. ISSN 1873-5495

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Abstract

Like several other arthropod species, stick insects use their antennae for tactile exploration of the near range environment and for spatial localisation of touched objects. More specifically, Carausius morosus continuously moves its antennae during locomotion and reliably responds to antennal contact events with directed movements of a front leg. Here we investigate the afferent projection patterns of antennal hair fields (aHF), proprioceptors known to encode antennal posture and movement, and to be involved in antennal movement control. We show that afferents of all seven aHF of C. morosus have terminal arborisations in the dorsal lobe (DL) of the cerebral (=supraoesophageal) ganglion, and descending collaterals that terminate in a characteristic part of the gnathal (=suboesophageal) ganglion. Despite differences of functional roles among aHF, terminal arborisation patterns show no topological arrangement according to segment specificity or direction of movement. In the DL, antennal motoneuron neurites show arborizations in proximity to aHF afferent terminals. Despite the morphological similarity of single mechanoreceptors of aHF and adjacent tactile hairs on the pedicel and flagellum, we find a clear separation of proprioceptive and exteroceptive mechanosensory neuropils in the cerebral ganglion. Moreover, we also find this functional separation in the gnathal ganglion. (C) 2018 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Goldammer, Jens UNSPECIFIED orcid.org/0000-0002-5623-8339 UNSPECIFIED Duerr, Volker UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-174267
DOI:	10.1016/j.asd.2018.07.001
Journal or Publication Title:	Arthropod Struct. Dev.
Volume:	47
Number:	5
Page Range:	S. 465 - 482
Date:	2018
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	1873-5495
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CENTRAL-NERVOUS-SYSTEM; THORACO-COXAL JOINT; CENTRAL PROJECTIONS; SENSORY NEURONS; TACTILE; PLATE; MOTONEURONS; CRICKET; WALKING; CONNECTIONS Multiple languages Entomology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17426