Abstract Novel, non-toxic antifouling technologies are focused on the manipulation of surface topography to deter settlement dispersal stages fouling organisms. This study investigated effect aspect ratio (feature height/feature width) topographical features engineered in polydimethylsiloxane, cyprids Balanus amphitrite and zoospores Ulva linza. The correlation relative ratios efficacy was proven be significant. An increase resulted an deterrence for both cyprids. spore density reduced 42%...

This manuscript constitutes the first evidence of effects texture on rate removal cyprids from surfaces and link between settlement preferences susceptibility to by force. Cyprids Balanus amphitrite settled preferentially sinusoidal linear textures (1:1 aspect ratio) in range 0–32 μm, with scale cyprid (512 μm) treated as flat. Polycarbonate was preferred a substratum polydimethylsiloxane (PDMS) elastomer. Textures 64–256 μm were avoided 256 PDMS least tested, no cyprids. Hydrodynamic...

Zwitterionic polymers such as poly(sulfobetaine methacrylate) (polySBMA) and poly(carboxybetaine (polyCBMA) have demonstrated impressive fouling-resistance against proteins mammalian cells. In this paper, the effects of these surface chemistries on settlement behavior an ubiquitous fouling organism, cypris larva barnacle Balanus amphitrite (=Amphibalanus amphitrite), were studied in laboratory. Conventional assays behavioral analysis cyprids using Noldus Ethovision 3.1 significant...

Barnacles are a persistent fouling problem in the marine environment, although their effects (eg reduced fuel efficiency, increased corrosion) can be through application of antifouling or fouling-release coatings to structures. However, developments fouling-resistant that cost-effective and not deleterious environment continually being sought. The incorporation proteolytic enzymes into has been suggested as one potential option. In this study, efficacy commercially available serine...

Gibbs surface energy has long been considered to be an important parameter in the design of fouling-resistant surfaces for marine applications. Rigorous testing hypothesis that settlement is related however never accomplished, due mainly practical limitations imposed by necessary combination engineering and biological evaluation methods. In this article, effects charge on cyprids fouling barnacle, Balanus amphitrite, were evaluated. Settlement assays conducted a range self-assembled...

Stalked and acorn barnacles (Cirripedia Thoracica) have a complex life cycle that includes free-swimming nauplius larva, cypris larva permanently attached sessile juvenile adult barnacle. The barnacle cyprid is among the most highly specialized of marine invertebrate larvae its settlement biology has been intensively studied. By contrast, surprisingly few papers dealt with critical series metamorphic events from cementation to substratum until appearance suspension feeding juvenile. This...

Video microscopy of cyprids Balanus amphitrite was used to monitor the action antennular setae during exploratory behaviour prior attachment. In addition, SEM provide a revised description all for that species. The videos describe if particular seta touches substratum and area it can cover surface exploration. On fourth segment, plumose terminal A B are never in contact with substratum, lack pore is argued they sense hydrodynamic forces. aesthetasc-like D likewise held free water at times...

Anthropogenic noise is a significant pollutant of the world's oceans, affecting behavioural and physiological traits in range species, including anti-predator behaviours. Using open field test, we investigated effects recordings piling drilling on behaviour captive juvenile European seabass response to visual stimulus (a predatory mimic). The impulsive nature triggered reflexive startle response, which contrasted elicited by continuous noise. When presented with mimic, fish exposed both...

Abstract The impact of the orientation zwitterionic groups, with respect to polymer backbone, on antifouling performance thin hydrogel films made polyzwitterions is explored. In an extension recent discussion about differences in behavior polymeric phosphatidylcholines and choline phosphates, a quasi‐isomeric set three poly(sulfobetaine methacrylate)s designed for this purpose. design based established monomer 3‐[N‐2‐(methacryloyloxy)ethyl‐ N , ‐dimethyl]ammonio‐propane‐1‐sulfonate two novel...

AbstractIn laboratory-based biofouling assays, the influence of physico-chemical surface characteristics on barnacle settlement has been tested most frequently using model organism Balanus amphitrite (= Amphibalanus amphitrite). Very few studies have addressed preferences other species, such as improvisus improvisus). This study aimed to unravel effects cues, in particular surface-free energy (SFE) and charge, cyprids B. improvisus. The use well-defined surfaces under controlled conditions...

Gregarious settlement in barnacle larvae (cyprids) is induced by a contact pheromone, the settlement-inducing protein complex (SIPC). The SIPC has been identified both cuticle of adult barnacles and temporary adhesive secretion (footprint) cyprids. Besides acting as inducer, presence footprints points to its additional involvement adhesion process. adsorption behaviour was therefore investigated on series self-assembled monolayers (SAMs) surface plasmon resonance at pH seawater (8.3)....

Zwitterionic chemical groups have well-documented resistance to marine fouling species when presented as homogeneous polymer brushes. These model formulations are not, however, suitable for practical fouling-control applications. It is presently unknown if a uniform film of zwitterions required elicit nonfouling character via the binding interfacial water or incorporation zwitterionic functionality into more bulk system will suffice. Here, copolymers n-butyl methacrylate were synthesized...

Hybrid materials (HMs) offer unique properties as they combine inorganic and organic components into a single material. Here, we developed HM coatings for marine antifouling applications using sol-gel chemistry naturally occurring polysaccharides. The were characterized by spectroscopic ellipsometry, contact angle goniometry, AFM, ATR-FTIR, their stability was tested in saline media. Marine fouling-release laboratory assays against the settlement of larvae barnacle Balanus improvisus removal...

The buildup of organic matter and organisms on surfaces exposed to marine environments, known as biofouling, is a disruptive costly process affecting maritime operations. Previous research has identified some the surface characteristics particularly suited creation antifouling fouling-release surfaces, but there remains room for improvement against both macrofouling microfouling organisms. Characterization their adhesives shown that many rely oxidative chemistries. In this work, we explore...

Layer-by-layer (LbL) assembly is a versatile platform for applying coatings and studying the properties of promising compounds antifouling applications. Here, alginate-based LbL were fabricated by alternating deposition alginic acid chitosan or polyethylenimine to form multilayer coatings. Films prepared with either odd even bilayer numbers investigate if termination affects physicochemical properties, resistance against nonspecific adsorption (NSA) proteins, efficacy. The hydrophilic films,...

Mussels (Mytilus edulis) are economically important in their role as an aquaculture species and also with regard to marine biofouling. They attach tenaciously a wide variety of submerged surfaces by virtue collagenous attachment threads termed 'byssi'. The aim this study was characterize the spreading byssal plaque, which mediates surface, on range response changes wettability. To achieve this, well characterized self-assembled monolayers omega-terminated alkanethiolates gold were used,...

A two-dimensional array of amphiphilic crosslinked networks was prepared by systematic alteration both the composition hyperbranched fluoropolymers (HBFPs) and relative stoichiometries upon crosslinking with poly(ethylene glycol) (PEG). Results physicochemical, mechanical, surface biofouling assessment are described in full. The materials were designed to present complex topographies, morphologies, chemical features over nano- microscopic dimensions explicitly inhibit microorganism...

Amphiphilic coatings are promising candidates for fouling-release applications. As hydrophilic components, polysaccharides interesting and environmentally benign building blocks. We used covalently coupled alginic acid (AA) hyaluronic (HA) postmodified them with a hydrophobic fluorinated amine. The surfaces showed good stability under marine conditions fluorination led to decreased uptake of Ca2+ ions after modification. In single species settlement assays (bacteria, diatoms, barnacle cypris...

Hydrogel coatings effectively reduce the attachment of proteins and organisms in laboratory assays, particular when made from zwitterionic monomers. In field experiments with multiple species non-living material, such suffer adsorption particulate matter. this study, monomer 3-[N-(2-methacryloyloxyethyl)-N,N-dimethylammonio] propanesulfonate (SPE) was copolymerized increasing amounts photo-crosslinker benzophenon-4-yloxyethyl methacrylate (BPEMA) to systematically alter density crosslinks...