Testing attachment point theory: diatom attachment on microtextured polyimide bioimics

Scardino, A.J., Harvey, E., and de Nys, R. (2006) Testing attachment point theory: diatom attachment on microtextured polyimide bioimics. Biofouling, 22 (1). pp. 55-60.

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This paper explores diatom attachment to a range of laser etched polyimide surfaces to directly test 'attachment point theory'. Static bioassays were conducted on microtextured polyimide surfaces using four diatom species, Fallacia carpentariae, Nitzschia cf. paleacea, Amphora sp. and Navicula jeffreyi with cell sizes ranging from 1 - 14 μm. The microtextured polyimides were modelled from natural fouling resistant bivalve surfaces and had wavelengths above, below and at the same scale as the diatom cell sizes. Diatoms attached in significantly higher numbers to treatments where the numbers of attachment points was highest. The lowest diatom attachment occurred where cells were slightly larger than the microtexture wavelength, resulting in only two theoretical points of attachment. The results support attachment point theory and highlight the need to address larval/cell size in relation to the number of attachment points on a surface. Further studies examining a range of microtexture scales are needed to apply attachment point theory to a suite of fouling organisms and to develop structured surfaces to control the attachment and development of fouling communities.

Item ID: 3945
Item Type: Article (Research - C1)
ISSN: 1026-7867
Keywords: diatoms; microtexture; polyimide; attachment point theory; Biofouling
Date Deposited: 17 Nov 2009 05:01
FoR Codes: 10 TECHNOLOGY > 1099 Other Technology > 109999 Technology not elsewhere classified @ 100%
SEO Codes: 96 ENVIRONMENT > 9604 Control of Pests, Diseases and Exotic Species > 960407 Control of Pests, Diseases and Exotic Species in Marine Environments @ 100%
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