The variability and interdependence of spider viscid line tensile properties

Perea Abarca, Gracia Belén and Plaza Baonza, Gustavo Ramón and Guinea Tortuero, Gustavo V. and Elices Calafat, Manuel and Velasco, Beatriz and Pérez Rigueiro, José (2013). The variability and interdependence of spider viscid line tensile properties. "The Journal of Experimental Biology", v. 216 (n. 24); pp. 4722-4728. ISSN 0022-0949. https://doi.org/10.1242/jeb.094011.

Description

Title: The variability and interdependence of spider viscid line tensile properties
Author/s:
  • Perea Abarca, Gracia Belén
  • Plaza Baonza, Gustavo Ramón
  • Guinea Tortuero, Gustavo V.
  • Elices Calafat, Manuel
  • Velasco, Beatriz
  • Pérez Rigueiro, José
Item Type: Article
Título de Revista/Publicación: The Journal of Experimental Biology
Date: September 2013
ISSN: 0022-0949
Volume: 216
Subjects:
Freetext Keywords: Biomaterials, silk, flagelliform silk
Faculty: Centro de Tecnología Biomédica (CTB) (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

True stress-true strain curves of naturally spun viscid line fibers retrieved directly from the spiral of orb-webs built by Argiope trifasciata spiders were measured using a novel methodology. This new procedure combines a method for removing the aqueous coating of the fibers and a technique that allows the accurate measurement of their cross sectional area. Comparison of the tensile behaviour of different samples indicates that naturally spun viscid lines show a large variability, comparable to that of other silks, such as major ampullate gland silk and silkworm silk. Nevertheless, application of a statistical analysis allowed identifying two independent parameters that underlie the variability and characterize the observed range of true stress-true strain curves. Combination of this result with previous mechanical and microstructural data suggested the assignment of these two independent effects to the degree of alignment of the protein chains and to the local relative humidity which, in turn, depends on the composition of the viscous coating and on the external environmental conditions.

More information

Item ID: 29074
DC Identifier: http://oa.upm.es/29074/
OAI Identifier: oai:oa.upm.es:29074
DOI: 10.1242/jeb.094011
Official URL: http://jeb.biologists.org/content/early/2013/09/17/jeb.094011
Deposited by: Memoria Investigacion
Deposited on: 22 Apr 2015 16:00
Last Modified: 22 Apr 2015 16:00
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