Journal Article

PUBDB-2017-07054

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The non-hierarchical, non-uniformly branching topology of a leuconoid sponge aquiferous system revealed by 3D reconstruction and morphometrics using corrosion casting and X-ray microtomography

Hammel, J. U. (Corresponding author) ; Filatov, M. V. ; Herzen, J.Extern* ; Beckmann, F.HZG* ; Kaandorp, J. A. ; Nickel, M. (Corresponding author)Extern*

2012
Wiley Oxford

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Please use a persistent id in citations: doi:10.1111/j.1463-6395.2010.00492.x

Abstract: As sessile filter feeders, sponges rely on a highly efficient fluid transport system. Their physiology depends on efficient water exchange, which is performed by the aquiferous system. This prominent poriferan anatomical character represents a dense network of incurrent and excurrent canals on which we lack detailed 3D models. To overcome this, we investigated the complex leucon-type architecture in the demosponge Tethya wilhelma using corrosion casting, microtomography, and 3D reconstructions. Our integrative qualitative and quantitative approach allowed us to create, for the first time, high-resolution 3D representations of entire canal systems which were used for detailed geometric and morphometric measurements. Canal diameters lack distinct size classes, and bifurcations are non-uniformly ramified. A relatively high number of bifurcations show previously unknown and atypical cross-sectional area ratios. Scaling properties and topological patterns of the canals indicate a more complex overall architecture than previously assumed. As a consequence, it might be more convenient to group canals into functional units rather than hierarchical clusters. Our data qualify the leucon canal system architecture of T. wilhelma as a highly efficient fluid transport system adapted toward minimal flow resistance. Our results and approach are relevant for a better understanding of sponge biology and cultivation techniques.

Note: (c) The Authors ; (c) The Royal Swedish Academy of Sciences ; Post referee fulltext in progress; Embargo 12 months from publication

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Contributing Institute(s):

1. DOOR-User (DOOR)
2. Zentrum für Material- und Küstenforschung (HZG)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)
2. FS-Proposal: I-20100327 (I-20100327) (I-20100327)
3. FS-Proposal: I-20110915 (I-20110915) (I-20110915)

Experiment(s):

1. DORIS Beamline BW2 (DORIS III)
2. DORIS Beamline W2 (DORIS III)

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Database coverage:
; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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