Universität zu Köln

Dinges, Gesa F. ORCID: 0000-0002-1759-738X, Bockemuehl, Till, Iacoviello, Francesco ORCID: 0000-0003-3564-2380, Shearing, Paul R., Bueschges, Ansgar and Blanke, Alexander ORCID: 0000-0003-4385-6039 (2022). Ultra high-resolution biomechanics suggest that substructures within insect mechanosensors decisively affect their sensitivity. J. R. Soc. Interface, 19 (190). LONDON: ROYAL SOC. ISSN 1742-5662

Full text not available from this repository.

Abstract

Insect load sensors, called campaniform sensilla (CS), measure strain changes within the cuticle of appendages. This mechanotransduction provides the neuromuscular system with feedback for posture and locomotion. Owing to their diverse morphology and arrangement, CS can encode different strain directions. We used nano-computed tomography and finite-element analysis to investigate how different CS morphologies within one location-the femoral CS field of the leg in the fruit fly Drosophila-interact under load. By investigating the influence of CS substructures' material properties during simulated limb displacement with naturalistic forces, we could show that CS substructures (i.e. socket and collar) influence strain distribution throughout the whole CS field. Altered socket and collar elastic moduli resulted in 5% relative differences in displacement, and the artificial removal of all sockets caused differences greater than 20% in cap displacement. Apparently, CS sockets support the distribution of distal strain to more proximal CS, while collars alter CS displacement more locally. Harder sockets can increase or decrease CS displacement depending on sensor location. Furthermore, high-resolution imaging revealed that sockets are interconnected in subcuticular rows. In summary, the sensitivity of individual CS is dependent on the configuration of other CS and their substructures.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Dinges, Gesa F. UNSPECIFIED orcid.org/0000-0002-1759-738X UNSPECIFIED Bockemuehl, Till UNSPECIFIED UNSPECIFIED UNSPECIFIED Iacoviello, Francesco UNSPECIFIED orcid.org/0000-0003-3564-2380 UNSPECIFIED Shearing, Paul R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bueschges, Ansgar UNSPECIFIED UNSPECIFIED UNSPECIFIED Blanke, Alexander UNSPECIFIED orcid.org/0000-0003-4385-6039 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-677257
DOI:	10.1098/rsif.2022.0102
Journal or Publication Title:	J. R. Soc. Interface
Volume:	19
Number:	190
Date:	2022
Publisher:	ROYAL SOC
Place of Publication:	LONDON
ISSN:	1742-5662
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TIBIAL CAMPANIFORM SENSILLA; STICK INSECT; AMERICAN COCKROACH; MUSCLE SYNERGIES; SENSE-ORGANS; FORCE; PROPRIOCEPTION; STRAIN; DEFORMATION; EXOSKELETON Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67725