title: Mechanical properties of the cement of the stalked barnacle Dosima fascicularis (Cirripedia, Crustacea).
abstract: The stalked barnacle Dosima fascicularis secretes foam-like cement, the amount of which usually exceeds that produced by other barnacles. When Dosima settles on small objects, this adhesive is additionally used as a float which gives buoyancy to the animal. The dual use of the cement by D. fascicularis requires mechanical properties different from those of other barnacle species. In the float, two regions with different morphological structure and mechanical properties can be distinguished. The outer compact zone with small gas-filled bubbles (cells) is harder than the interior one and forms a protective rind presumably against mechanical damage. The inner region with large, gas-filled cells is soft. This study demonstrates that D. fascicularis cement is soft and visco-elastic. We show that the values of the elastic modulus, hardness and tensile stress are considerably lower than in the rigid cement of other barnacles.
authors: Faculty of Life Sciences, Core Facility Cell Imaging and Ultrastructure Research , University of Vienna , Vienna , Austria.
authors: Vanessa
authors: V
authors: Zheden
authors: Faculty of Life Sciences, Core Facility Cell Imaging and Ultrastructure Research , University of Vienna , Vienna , Austria.
authors: Waltraud
authors: W
authors: Klepal
authors: Zoological Institute: Functional Morphology and Biomechanics , Kiel University , Kiel , Germany.
authors: Stanislav N
authors: SN
authors: Gorb
authors: Zoological Institute: Functional Morphology and Biomechanics , Kiel University , Kiel , Germany.
authors: Alexander
authors: A
authors: Kovalev
keywords: adhesive; elastic modulus; hardness; tensile stress
references: J Exp Biol. 1996;199(Pt 4):1005-17
references: 9318809
references: Biofouling. 2006;22(1-2):1-9
references: 16551556
references: Bone. 2002 Jan;30(1):178-84
references: 11792582
references: Biol Bull. 2012 Oct;223(2):192-204
references: 23111131
references: J Polym Sci B Polym Phys. 2011 Jun;49(11):757-771
references: 21643511
references: Biofouling. 2004 Dec;20(6):279-89
references: 15804712
references: J Exp Biol. 2000 Jun;203(Pt 12):1887-95
references: 10821745
references: J Comp Physiol A. 2000 Sep;186(9):821-31
references: 11085636
references: Biofouling. 2014 Sep;30(8):949-63
references: 25237772
references: Mar Biotechnol (NY). 2007 Nov-Dec;9(6):661-81
references: 17990038
references: Biofouling. 2009;25(3):263-75
references: 19180351
references: Biofouling. 2009;25(4):359-66
references: 19263278
references: J Struct Biol. 2010 Feb;169(2):145-60
references: 19766190
references: J Comp Physiol B. 1986;156(4):491-6
references: 3734192
references: Biochemistry. 2009 Mar 31;48(12):2752-9
references: 19220048
references: Biol Bull. 1976 Feb;150(1):47-56
references: 1252549
references: J Biol Chem. 2005 Dec 30;280(52):42938-44
references: 16227622
references: J Exp Biol. 2005 Jul;208(Pt 13):2555-67
references: 15961742
references: J Exp Biol. 2009 Nov;212(Pt 21):3499-510
references: 19837892
references: J Morphol. 1986 Sep;189(3):261-70
references: 3772980
references: Biofouling. 2011 Jul;27(6):569-77
references: 21660775
references: Biophys Chem. 2010 Oct;151(3):96-104
references: 20615601
references: Biomacromolecules. 2005 Nov-Dec;6(6):3300-12
references: 16283759
references: Biofouling. 2013;29(6):735-49
references: 23802872
references: J Exp Biol. 2004 Dec;207(Pt 26):4727-34
references: 15579565
references: Curr Biol. 2011 Oct 11;21(19):R802-3
references: 21996498
references: Langmuir. 2010 May 4;26(9):6549-56
references: 20170114
references: Biophys J. 2005 Mar;88(3):2114-25
references: 15626715
references: J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2006 Nov;192(11):1233-43
references: 16868765
references: Mar Biotechnol (NY). 2003 Jan-Feb;5(1):45-57
references: 12925918
references: Biofouling. 2008;24(2):109-18
references: 18247205
references: Biofouling. 2009 Oct;25(7):657-66
references: 20183124