Anti-Biofouling Defence Mechanism of Basibionts (A Chemical Warfare) - A Critical Review

Ogunola, Oluniyi Solomon; Onada, Olawale Ahmed

doi:10.4172/2161-0525.1000380

Cited by 3 publications

(2 citation statements)

References 66 publications

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“…This colonization can be divided into two main stages, micro-fouling and macro-fouling, which are characterized respectively by the formation of bacterial biofilm on the surface and the adhesion of macro-organisms such as algae, barnacles and larvae (macro-fouling) (Fig. 1) [14,34,40].…”

Section: Preparation Of Mortar Specimensmentioning

confidence: 99%

In vitro and in situ tests to evaluate the bacterial colonization of cementitious materials in the marine environment

Hayek¹,

Salgues²,

Habouzit³

et al. 2020

Cement and Concrete Composites

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Civil engineers have a responsibility to take measures to protect marine biodiversity by selecting more bioreceptive construction materials in the design of marine infrastructure, for better biodiversity conservation. In this study, it was shown that pre-carbonation of cementitious materials accelerates their bacterial colorization by lowering the pH of their surface. It has been shown both in the laboratory and in-situ tests that the bacterial colonization of cementitious materials is influenced by the pH and the type of cement. By comparing the bacterial colonization of Portland cement mortars, CEM I, and slag cement, CEM III, mortars, it was found that the CEM III mortars are more bioreceptive than the CEM I mortars. This study presented and verified a novel experimental laboratory approach which can be used to evaluate the bacterial colonization (bioreceptivity) of cementitious materials in marine environment. The approach could be taken up in future recommendations to enable engineers to eco-design more eco-friendly marine infrastructure and develop green-engineering projects.

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Section: Preparation Of Mortar Specimensmentioning

confidence: 99%

In vitro and in situ tests to evaluate the bacterial colonization of cementitious materials in the marine environment

Hayek¹,

Salgues²,

Habouzit³

et al. 2020

Cement and Concrete Composites

View full text Add to dashboard Cite

show abstract

“…However, many of these interactions are negative and are costly for the host 1,[38][39][40][41][42] . Several hosts have evolved chemical, physical, or other bio-mediated defence systems to protect themselves from epibiotic attachment 1,43,44 . Therefore, many adherent organisms are generalists that do not have epibiotic relations or host specificity 45 .…”

Section: Discussionmentioning

confidence: 99%

Citizen science via social media revealed conditions of symbiosis between a marine gastropod and an epibiotic alga

Kagawa

Uchida

Yamazaki

et al. 2020

Sci Rep

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Environmental factors promote symbiosis, but its mechanism is not yet well understood. The alga Pseudocladophora conchopheria grows only on the shell of an intertidal gastropod Lunella correensis, and these species have a close symbiotic relationship which the alga reduces heat stress of the gastropod. In collaboration with general public, we investigated how environmental conditions alter the symbiotic interaction between the alga and the gastropod. Information about the habitats of each gastropod and images of shells was obtained from the Japanese and Korean coasts via social media. We constructed the hierarchical Bayesian model using the data. The results indicated that the proportion of shell area covered by P. conchopheria increased as the substrate size utilized by the gastropod increased. Meanwhile, temperature did not affect the proportion of P. conchopheria on the shell. These suggested that the alga provides no benefits for the gastropod on small substrates because gastropod can reduce the heat stress by diving into the small sediment. Further, the gastropod’s cost incurred by growing the alga on the shell seems to be low as the algae can grow even in cooler places where no benefits of heat resistance for gastropods. Different environments can yield variable conditions in symbiosis.

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How to Improve the Bioreceptivity of Concrete Infrastructure Used in Marine Ecosystems? Literature Review for Mechanisms, Key Factors, and Colonization Effects

Hayek

Salgues

Souche

et al. 2023

Journal of Coastal Research

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Hayek, M.; Salgues, M.; Souche, J.-C.; De Weerdt, K., and Pioch, S., 2023. How to improve the bioreceptivity of concrete infrastructure used in marine ecosystems? Literature review for mechanisms, key factors, and colonization effects. Journal of Coastal Research, 39(3), 553–568. Charlotte (North Carolina), ISSN 0749-0208.With 39,400 km2 of coastal and marine areas artificialized and an increasing demand due to the growing global population—9 billion by 2050—it has become necessary to find ways to mitigate futures constructions impacts on biodiversity. This study explores how civil engineering can take further technical measures to enhance marine biodiversity, in a real and valuable “win-win” strategy. The global aim is to integrate eco-engineering practices within coastal projects and include ecological targets (e.g., the diversity and speed of biological colonization) early, at the project design stage, with the same level efforts for technical, social, and economic studies. Concrete is the most useful material for coastal infrastructure construction. Therefore, enhance its positive impact on colonization that is by far one of the key points for developers and coastal managers. To this end, the latest research regarding the bioreceptivity of concrete is reviewed, focusing on the characteristics of the marine environment that affect the colonization of concrete and the organisms involved. From this base of publications, the intrinsic and environmental parameters that can influence the intrinsic and the extrinsic bioreceptivity of concrete have been updated, specifically operating the link with the mechanisms leading to the colonization of concrete and biofilm formation, which hasn't been done before. Based on the persistence of their significant effect (after 78 days of immersion in seawater), the intrinsic parameters that support greater biocolonization are classified from more to less effective in the following order: surface roughness (190%) > chemical composition (slag cement instead Portland cement) (136%) > chemical composition (presence of formwork oil) (106%). Lastly, both the ecological effect and the positive and negative effects of biofilm formation on the durability of concrete were analysed to provide clear and operational results for future concrete coastal construction implementation for decision makers.

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Anti-Biofouling Defence Mechanism of Basibionts (A Chemical Warfare) - A Critical Review

Cited by 3 publications

References 66 publications

In vitro and in situ tests to evaluate the bacterial colonization of cementitious materials in the marine environment

In vitro and in situ tests to evaluate the bacterial colonization of cementitious materials in the marine environment

Citizen science via social media revealed conditions of symbiosis between a marine gastropod and an epibiotic alga

How to Improve the Bioreceptivity of Concrete Infrastructure Used in Marine Ecosystems? Literature Review for Mechanisms, Key Factors, and Colonization Effects

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