Consulta: subjectFacets:"Biofouling"
Registros recuperados: 25
Data/hora: 01/06/2024 06:37:00

Natural antifouling compound production by microbes associated with marine macroorganisms: A review
Provedor de dados: 69
Autores: Satheesh,Sathianeson; Ba-akdah,Mohammad Abdulaziz; Al-Sofyani,Abdulmohsin A.
In the marine environment, all hard surfaces including marine macroorganims are colonized by microorganisms mainly from the surrounding environment. The microorganisms associated with marine macroorganisms offer tremendous potential for exploitation of bioactive metabolites. Biofouling is a continuous problem in marine sectors which needs huge economy for control and cleaning processes. Biotechnological way for searching natural product antifouling compounds gained momentum in recent years because of the environmental pollution associated with the use of toxic chemicals to control biofouling. While, natural product based antifoulants from marine organisms particularly sponges and corals attained significance due to their activities in field assays,...
Tipo: Journal article
Palavras-chave: Antifouling; Biofouling; Bioactive compounds; Marine biotechnology; Marine microbes.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000300012

Distribution, associated species and extent of biofouling “reefs” formed by the alien species Ficopomatus enigmaticus (Annelida, Polychaeta) in marinas
Provedor de dados: 5
Autores: Charles, M.; Faillettaz, Robin; Desroy, Nicolas; Fournier, Jerome; Costil, Katherine.
Artificial structures in ports are commonly colonized by non-indigenous epifauna that tolerate high pollution levels. Bioconstructions built by alien species may offer sheltered microhabitats for motile (vagile) animals but biofouling often becomes detrimental to human activities. In this context, the present study provides an inventory of 1) the extent of biofouling related to the alien Polychaeta Ficopomatus enigmaticus on hard structures of marinas in Normandy, France, and 2) the biodiversity of sessile (attached) or vagile (motile) fauna associated with these “reefs”, including both native and alien species. Reefs built by F. enigmaticus were found in 6 out of 12 marinas with oligohaline-mesohaline waters. Significant differences in the total volume of...
Tipo: Text
Palavras-chave: Biofouling; Ficopomatus enigmaticus; Benthic communities; Alien species; Marinas; Normandy (France).
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00449/56052/57572.pdf

Interactions des bactéries marines responsables de la formation des biosalissures avec des matériaux biospécifiques
Provedor de dados: 5
Autores: Hamadouche, Nora.
The immersion of a material in a marine environment automatically results in forming a biological veil which develops into biofouling. Biofouling is responsible for many problems that occur on immerged structures. Marine bacteria are strongly involved in biofouling and specific studies are aiming at limiting their adhesion to the surface of immerged materials.  The Laboratoire de Recherches sur les Macromolécules (Macromolecule Research Laboratory) has demonstrated that modulating or inhibiting human commensal bacteria with biospecific statistical copolymers is possible. The goal of our research has been to identify statistical copolymers capable of inhibiting marine bacteria adhesions and therefore reduce marine biofilm formation. In order to do so, two...
Tipo: Text
Palavras-chave: Biofouling; Specific Interaction; Statistical Copolymers; Marine Bacteria; Biofouling; Interaction spécifique; Copolymères statistiques; Bactéries marines.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/these-1614.pdf

The Recruitment of the Endangered Fan Mussel Pinna nobilis (Linnaeus, 1758) on the Ropes of a Mediterranean Mussel Long Line Farm
Provedor de dados: 5
Autores: Theodorou, John A.; James, Ross; Tzovenis, Ioannis; Hellio, Claire.
The fan mussel Pinna nobilis (Linnaeus, 1758) is an endangered bivalve species and is endemic to the Mediterranean Sea. Juvenile animals have been found growing on mussels Mytilus galloprovincialis (Lamarck, 1819) long line aquaculture bounces and ropes within the Maliakos Gulf (Aegean Sea). Animals were sampled from the harvested mussel lines. The results show twelve juvenile P. nobilis per ton of harvested M. galloprovincialis.
Tipo: Text
Palavras-chave: Fan mussel; Pinna nobilis; Recruitment; Biofouling; Mediterranean mussel aquaculture; Mytilus galloprovincialis; Maliakos Gulf; Aegean Sea.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00617/72867/71940.pdf

Marine bacteria from the Gulf of California with antimicrofouling activity against colonizing bacteria and microalgae
Provedor de dados: 5
Autores: Sanchez-rodriguez, Diana Elizabeth; Ortiz-aguirre, Ismael; Aguila-ramirez, Ruth Noemi; Guadalupe Rico-virgen, Erika; Gonzalez-acosta, Barbara; Hellio, Claire.
One way of reducing the input of pollutants into the marine environment is to enforce the use of non-toxic antifouling paints in marine protected areas. Thus, the purpose of this study was to detect marine microorganisms that secrete inhibitory substances against bacteria and microalgae to avoid biofouling on manmade structures in La Paz bay, B.C.S., Mexico. The inhibitory potential of 125 bacteria was evaluated against biofilm-forming bacteria. Crude extracts were obtained with methanol and ethyl acetate from 16 bacterial strains that exhibited antagonistic and antibacterial activity in a preliminary screening. Antibacterial and antimicroalgal assays were performed using crude extracts, the minimum inhibitory concentration (MIC) was determined. The...
Tipo: Text
Palavras-chave: Epibionts; Extracts; Shewanella; Staphylococcus; Biofouling; Antifouling.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00616/72762/72271.pdf

Phenotype plasticity, local adaptation, and biofouling influence on growth of the pearl oyster Pinctada margaritifera: A common garden approach
Provedor de dados: 5
Autores: Hulot, V.; Saulnier, Denis; Latchere, O.; Maihota, N.; Gaertner-mazouni, N.
The purpose of our study is to investigate (1) the influence of phenotype plasticity and local adaptation on pearl-oyster physiology by testing the persistence of growth differentiation of two pearl oyster populations (Arutua and Mangareva) in common garden experiment; (2) to quantify the influence of biofouling development on the growth of each pearl oyster population. According to our observations, the growth rate in terms of total oyster weight suggested better growth performance of the pearl oyster Pinctada margaritifera in Mangareva (0.21–0.24 ± 0.01 g.day−1) than Arutua (0.14–0.15 ± 0.01 g.day−1). However, similar growth performances are observed at the Vairao common garden site for oyster stocks from Mangareva (0.07 ± 0.01 mm.day−1 or...
Tipo: Text
Palavras-chave: Pearl oyster; Growth performance; Biofouling; Endogenous factor; Environmental factor; Common garden experiment.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00507/61866/65934.pdf

Quorum sensing inhibitors from Leucetta chagosensis Dendy, 1863
Provedor de dados: 5
Autores: Mai, T.; Tintillier, Florent; Lucasson, Aude; Moriou, C.; Bonno, E.; Petek, S.; Magre, Kevin; Al Mourabit, A.; Saulnier, Denis; Debitus, C.
Sponges are a rich source for investigation of bioactive small molecules. They have been mostly investigated for the search of new pharmacological models or therapeutic agents for the treatment of human diseases. Micro-organisms can also represent a virulent pathogen for marine invertebrates such as sponges, which need to protect themselves against these microbes. Sponges' self defence mechanisms involving dialogue molecules thus represent a pertinent research track for potent anti-infective and anti-biofilm activities such as quorum sensing inhibitors (QSIs). The investigation of the QSI crude extract of Leucetta chagosensis Dendy, 1863 led to the isolation of three new alkaloids, isonaamine D, di-isonaamidine A and leucettamine D, along with the known...
Tipo: Text
Palavras-chave: Biofouling; Leucetta chagosensis; Leucettamine; Naamidine; Naamine; Quorum sensing; Quorum sensing inhibitors; Sponges; Vibrio harveyi.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00275/38597/37189.pdf

Composition of biofouling communities on suspended oyster cultures: an in situ study of their interactions with the water column
Provedor de dados: 5
Autores: Mazouni, Nabila; Gaertner, J; Deslous-paoli, Jean-marc.
This study was based on in situ experiments conducted in a shellfish lagoon (Thau, France) to determine the interactions between suspended oyster Crassostrea gigas Thunberg cultures and their environment at a seasonal scale. Three groups of descriptors were considered simultaneously during the course of the study: the taxonomic composition of an oyster culture unit (OCU), the nutrient and oxygen exchanges at the OCU-water interface (fluxes) and the water-column characteristics (water). We used a multiple factorial analysis (MFA) to assess in a single reference frame: (1) the seasonal organisation of the taxonomic groups which compose the OCU and (2) the interactions between this multispecific assemblage and the water column. We found strong seasonal...
Tipo: Text
Palavras-chave: Ascidians; Fluxes; Multicompartment approach; Biofouling; Oyster culture.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/1996/publication-809.pdf

The oceans are changing: impact of ocean warming and acidification on biofouling communities
Provedor de dados: 5
Autores: Dobretsov, Sergey; Coutinho, Ricardo; Rittschof, Daniel; Salta, Maria; Ragazzola, Federica; Hellio, Claire.
Climate change (CC) is driving modification of the chemical and physical properties of estuaries and oceans with profound consequences for species and ecosystems. Numerous studies investigate CC effects from species to ecosystem levels, but little is known of the impacts on biofilm communities and on bioactive molecules such as cues, adhesives and enzymes. CC is induced by anthropogenic activity increasing greenhouse emissions leading to rises in air and water temperatures, ocean acidification, sea level rise and changes in ocean gyres and rainfall patterns. These environmental changes are resulting in alterations within marine communities and changes in species ranges and composition. This review provides insights and synthesis of knowledge about the...
Tipo: Text
Palavras-chave: Biofilm; Biofouling; Bioactive compounds; Climate change.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61686/65641.pdf

Harmonization in the Joint European Research Infrastructure Network for Coastal Observatories -JERICO
Provedor de dados: 5
Autores: Petihakis, George; Petersen, Wilhelm; Nair, Rajesh; Faimali, Marco; Pavanello, Giovanni; Boukerma, Kada; Delauney, Laurent; Puillat, Ingrid; Farcy, Patrick; Greenwood, Naomi.
The JERICO European research infrastructure (RI) is integrating diverse platform types such as fixed buoys, piles, moorings, drifters, FerryBoxes, gliders, HF radars, coastal cable observatories and the associated technologies dedicated to observe and monitor coastal European seas. The first steps of setting up, coordination and harmonization were done during 2011 to 2015 in the framework of FP7-JERICO (www.jerico-fp7.eu), a 4-year long infrastructure project co-funded by the European Commission with 27 partners from 17 European countries under the coordination of IFREMER. Next steps are driven in the H2020-JERICO-NEXT European project until 2019, involving 33 partners. The main objective of the JERICO consortium is to establish a Pan European approach for...
Tipo: Text
Palavras-chave: Coastal observatories; Harmonization; Biofouling; Calibration; JERICO.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00295/40665/49966.pdf

Sponge-Inspired Dibromohemibastadin Prevents and Disrupts Bacterial Biofilms without Toxicity
Provedor de dados: 5
Autores: Le Norcy, Tiffany; Niemann, Hendrik; Proksch, Peter; Tait, Karen; Linossier, Isabelle; Rehel, Karine; Hellio, Claire; Fay, Fabienne.
Since the banning of several families of compounds in antifouling (AF) coatings, the search for environmentally friendly AF compounds has intensified. Natural sources of AF compounds have been identified in marine organisms and can be used to create analogues in laboratory. In a previous study, we identified that dibromohemibastadin-1 (DBHB) is a promising AF molecule, leading to the inhibition of the activity of phenoloxidase, an enzyme involved in the attachment of mussels to surfaces. This paper describes the activity of the DBHB on biofilm formation and its detachment and on bacterial adhesion and communication: quorum sensing. DBHB has an anti-biofilm activity without affecting adhesion of marine and terrestrial bacteria at a dose of 10 mu M....
Tipo: Text
Palavras-chave: Biofouling; Biofilm; Bastadin derivative; Microfouling; Quorum sensing; Sponge.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00616/72813/72581.pdf

Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia
Provedor de dados: 5
Autores: Lacoste, Elise; Gueguen, Yannick; Le Moullac, Gilles; Koua, Manaarii Sham; Gaertner-mazouni, Nabila.
Bivalve cultivation can significantly contribute to nutrient cycling in semi-enclosed ecosystems. We investigated the influence of suspended pearl oyster culture on nutrient regeneration in the water column of 3 oligotrophic lagoons in French Polynesia. The aim of this first study performed in a tropical area was to assess the seasonal variability of nutrient fluxes and to quantify the contribution of biofouling communities. In situ metabolic enclosure systems were used to measure nutrient uptake or release by ‘cultivation units’ (i.e. 4 pearl oysters with or without associated biofouling). In all 3 study lagoons (Tahiti, Mangareva, Ahe), nutrient fluxes produced by pearl oyster and associated biofouling communities (CR units) were 4- to 6-fold higher than...
Tipo: Text
Palavras-chave: Pearl oysters; Biofouling; Nutrient flux; Aquaculture impact.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00201/31193/29592.pdf

Biofouling development and its effect on growth and reproduction of the farmed pearl oyster Pinctada margaritifera
Provedor de dados: 5
Autores: Lacoste, Elise; Le Moullac, Gilles; Levy, Peva; Gueguen, Yannick; Gaertner-mazouni, Nabila.
In bivalve aquaculture, dominant fouling organisms are filter feeders which can compete for food with reared bivalves, sometimes causing mortality or reducing their growth rate. This study investigated the effect of biofouling on the farmed pearl oyster Pinctada margaritifera in two lagoons of French Polynesia. Survival, growth and reproduction of 2 year-old pearl oysters were monitored with regular sampling schedules, from the initial stage of colonization up to 20 months of biofouling accumulation. Control groups of pearl oysters were kept free of biofouling as is the current practice in pearl farms. After more than a year of monitoring, no significant difference was recorded in shell growth rate between pearl oysters reared with epibionts and the...
Tipo: Text
Palavras-chave: Pearl oyster culture; Pinctada margaritifera; Biofouling; Growth; Reproduction.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00201/31188/29587.pdf

Trophic relationships between the farmed pearl oyster Pinctada margaritifera and its epibionts revealed by stable isotopes and feeding experiments
Provedor de dados: 5
Autores: Lacoste, Elise; Raimbault, Patrick; Harmelin-vivien, Mireille; Gaertner-mazouni, Nabila.
Bivalve cultures support a host of epibionts, mainly suspension feeders, which can compete for food resources with the cultivated bivalves. However, the magnitude of interspecific competition for food in bivalve aquaculture settings remains inconclusive, especially in tropical areas. We investigated the interactions for food between the farmed pearl oyster Pinctada margaritifera and its epibionts, using stable isotope analysis and feeding experiments. Inter-and intraspecific variations of delta C-13 and delta N-15 stable isotope ratios (SIRs) were determined for oysters in the presence or absence of epibionts. The diet of the most abundant epibionts, Herdmania momus and Didemnum sp., was specified using isotope measurements and flow cytometry during...
Tipo: Text
Palavras-chave: Ascidian; Biofouling; Trophic interactions; Stable isotope; Flow cytometry.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00664/77582/79564.pdf

Increasing Reliability: Smart Biofouling Prevention Systems
Provedor de dados: 5
Autores: Delauney, Laurent; Ralston, Emilie; Zargiel-hunsucker, Kelli.
Tipo: Text
Palavras-chave: Biofilm; Biofouling; Camera; In situ; Lights; Long term; Marine; Monitoring; Optical; Protection; Sensors.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00630/74233/73867.pdf

In situ measurement with diffusive gradients in thin films: effect of biofouling in freshwater
Provedor de dados: 5
Autores: Uher, Emmanuelle; Compere, Chantal; Combe, Matthieu; Mazeas, Florence; Gourlay-france, Catherine.
Concerning in situ passive sampler deployment, several technical priorities must be considered. In particular, deployment time must be sufficiently long not only to allow a significant quantity to be accumulated to facilitate analysis but also to ensure that the signal is above the quantification limit and out of the blank influence. Moreover, regarding the diffusive gradient in thin films (DGT) technique, deployment time must also be sufficiently long (at least 5 days) to avoid the interactions of the solutes with the material diffusion layer of the DGT and for the steady state to be reached in the gel. However, biofouling occurs in situ and modifies the surface of the samplers. In this article, we propose a kinetic model which highlights the biofouling...
Tipo: Text
Palavras-chave: DGT; Metals; Biofouling; Seine River; Field deployment; Passive sampler.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00382/49330/49759.pdf

Stochastic Modeling of Forces on Jacket-Type Offshore Structures Colonized by Marine Growth
Provedor de dados: 5
Autores: Ameryoun, Hamed; Schoefs, Franck; Barille, Laurent; Thomas, Yoann.
The present paper deals with the stochastic modeling of bio-colonization for the computation of stochastic hydrodynamic loading on jacket-type offshore structures. It relies on a multidisciplinary study gathering biological and physical research fields that accounts for uncertainties at all the levels. Indeed, bio-colonization of offshore structures is a complex phenomenon with two major but distinct domains: (i) marine biology, whose processes are modeled with biomathematics methods, and (ii) hydrodynamic processes. This paper aims to connect these two domains. It proposes a stochastic model for the marine organism's growth and then continues with transfers for the assessment of drag coefficient and forces probability density functions that account for...
Tipo: Text
Palavras-chave: Marine growth; Biofouling; Wave loading; Stochastic modeling; Reliability; Jacket structures.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00605/71668/70107.pdf

Detection of introduced sessile species on the near shore continental shelf in southern Brazil
Provedor de dados: 103
Autores: Bumbeer,Janaína de Araújo; Rocha,Rosana Moreira da.
Invasion by marine species, often considered a grave threat to marine ecosystems, occurs throughout the world as a consequence of many anthropogenic activities. In coastal Paraná, many factors including shipping, aquaculture and the use of artificial substrates provide suitable environments for the establishment and rapid spread of introduced marine species. To better understand this process, the encrusting community was studied on polyethylene plates (n = 120, 10 x 10 cm) that were placed seasonally at fixed locations on the inner continental shelf to detect non-native species. Of the 62 taxa found, 40 were identified to species, 14 of which were native, 9 introduced and 17 cryptogenic. We found a new introduction while most introduced species were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial substrate; Biofouling; Marine bioinvasion; Sublittoral.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200005

Sessile and sedentary macrofauna from the Pirapama Shipwreck, Pernambuco, Brazil
Provedor de dados: 49
Autores: Lira,Simone Maria de Albuquerque; Farrapeira,Cristiane Maria Rocha; Amaral,Fernanda Maria Duarte; Ramos,Carla Alecrim Colaço.
Shipwrecks are considered artificial reef environments - structures immersed in aquatic environments (especially marine ones) that provide fauna with shelter, hard substrates, food and nursery areas. This study aimed to survey the benthic animal biodiversity of the Pirapama shipwreck, located 23 m deep and six miles off Recife harbor. From 2001 to 2007, species were observed, photographed and collected through scuba diving. The material was later sorted and identified in the laboratory. A total of 76 sessile and sedentary animal taxa were recorded belonging to the following phyla: Porifera (Demospongiae and Calcarea), Cnidaria (Hydrozoa and Anthozoa), Mollusca (Bivalvia and Gastropoda), Annelida (Polychaeta), Arthropoda (Cirripedia), Bryozoa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial reefs; Biofouling; Benthic fauna inventory; Marine invertebrates; Biodiversity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000400021

INVERTEBRADOS MARINOS ASOCIADOS CON LAS PLATAFORMAS DE GAS EN LA GUAJIRA (CARIBE COLOMBIANO)*
Provedor de dados: 50
Autores: Gracia C.,Adriana; Cruz,Norella; Borrero,Giomar; Báez,Diana Patricia; Santodomingo,Nadiezhda.
El desarrollo industrial y económico de Colombia se ha expandido en la búsqueda de nuevos recursos minerales hacia los límites del mar territorial. La prospección y construcción de infraestructuras en el mar plantean nuevos retos para el desarrollo sostenible del país. Este estudio de línea base se realizó con el fin de conocer las especies de invertebrados marinos que se han establecido sobre las únicas plataformas permanentes para la explotación de gas ubicadas mar afuera en La Guajira, al norte del Caribe colombiano: plataformas A y B, construidas sobre fondos de 18 y 33 m de profundidad, respectivamente. Por medio de buceo autónomo Scuba, se recolectaron e identificaron 116 especies de invertebrados marinos. Los crustáceos presentaron la mayor riqueza...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sustratos artificiales; Biofouling; Macrofauna; Caribe colombiano; Inventarios de especies.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200008

Relationship between environmental variables and growth of Pteria colymbus (Mollusca Bivalvia: Pteriidae), at three cultivation depths
Provedor de dados: 50
Autores: Freites,Luis Felipe; Guevara,Miguel; Márquez,Adrián; Revilla,Jormil; Narváez,Mariela; Lodeiros,César.
ABSTRACT We studied the influence of environmental variables associated with three water depths (2, 6 and 10 m) on shell growth, soft tissues dry mass (STDM) and survival of the Caribbean winged oyster Pteria colymbus (Roding, 1798). chlorophyll-a (Chl-a), dissolved oxygen, particulate organic matter (POM) and temperature were studied at each depth. Oysters were placed in 135 plastic baskets with five individuals in each basket. Three baskets at each depth were chosen at monthly intervals for measurements of biometric parameters, biofouling, and survival. At the end of the study, dry mass of the individuals grown at 10 m was significantly lower (Kruskal-Wallis non-parametric test KW, P &lt; 0.05) with the highest values of STDM corresponding to oysters...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofouling; Environment; Depth; Oyster; Survival.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000100009

Seasonal variation in larval density of Limnoperna fortunei (Bivalvia, Mytilidae) in the Iguaçu and Paraná rivers, in the region of Foz do Iguaçu, Paraná, Southern Brazil
Provedor de dados: 52
Autores: Pestana,Débora; Pie,Marcio Roberto; Ostrensky,Antonio; Boeger,Walter Antonio; Andreoli,Cleverson; Franceschi,Francisco; Lagos,Patrícia.
The larval density of the invasive mussel Limnoperna fortunei (Bivalvia, Mytilidae) was monitored from January 2005 to February 2006 at two points along the Paraná and the Iguaçu Rivers, near Foz do Iguaçu, PR, Brazil. The results indicated two density peaks in the Paraná River: a lower peak between March and June and a higher peak in October. In the Iguaçu River, the values were much lower, yet they also showed a peak between September and October. A reduction in the reproductive activity was observed in both the rivers between July and August. The average larval density at the collection point in the Paraná reached 948.5 larvae/m³, with a peak of 2,999.5 larvae/m³ in October. The present study represented the first quantification of the larval density of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invasive species; Golden mussel; Biofouling; Larval density.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300023

Introduced and cryptogenic species and their management in Paranaguá Bay, Brazil
Provedor de dados: 52
Autores: Neves,Carolina Somaio; Rocha,Rosana Moreira da.
The aim of this work was to identify the introduced and cryptogenic species in encrusting and associated communities of hard substrates in Paranaguá Bay, Brazil, and to attempt to determine which of these species could negatively affect the local community to suggest management strategies for these species. At least four introduced species were found - a large number in comparison with other port surveys. These were the hydrozoan Garveia franciscana Torrey, 1902, the polychaete Polydora cornuta Bosc, 1902, the barnacles Amphibalanus reticulatus (Utinoni, 1967) and Striatobalanus amaryllis Darwin, 1854, all with potentially harmful impacts. Of the 33 cryptogenic species, four were also listed in the literature as causing negative effects. We propose the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioinvasion; Introduced species; Management; Biofouling; Artificial substrates; Paranaguá Bay.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300025

Antifouling effect of bioactive compounds from marine sponge Acanthella elongata and different species of bacterial film on larval attachment of Balanus amphitrite (cirripedia, crustacea)
Provedor de dados: 52
Autores: Ganapiriya,Viswambaran; Maharajan,Athisuyambulingam; Kumarasamy,Pothiappan.
The antifouling activity of bioactive compounds from marine sponge Acanthella elongata (Dendy) and five species of bacterial biofilm were studied. Larvae of Balanus amphitrite (Cyprids and nauplii) were used to monitor the settlement inhibition and the extent to which inhibition was due to toxicity. The crude extract and partially purified fractions of A.elongata showed significant inhibition over the settlement individually, and with the interaction of bacterial species. No bacterial film stimulated the barnacle settlement. The high but variable levels of antifouling activity in combination with less amount of toxicity showed the potential of these metabolites in environmentally-friendly antifouling preparations.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofouling; Bacterial film; Bacteria; Barnacles; Cyprids; B. amphitrite.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000300010

Chemical and microbiological evaluation of the internal surfaces of aluminum tubes both unlined and lined with epoxi resin by means of the stereoscope and scanning electron microscope
Provedor de dados: 58
Autores: Pizzolitto,Elisabeth Loshchagin; Pizzolitto,Antonio Carlos; Pozetti,Gilberto Luiz.
The internal surfaces of aluminum tubes, both unlined and lined with epoxy resin, which are used for packaged medicines such as creams, ointments, gels, etc., were evaluated chemically, and microbiologically with regard to microorganism adherence. Proof of porosity of the unlined aluminum surface and lined with epoxy resin, and the resistance to removal of the resin were observed using a scanning electron microscope and a stereoscope, with a digitalized image system. To evaluate the microorganisms adherence to the aluminum surface, unlined and lined with epoxy resin, sterilized disks (10mm in diameter) were immersed in Mueller Hinton Broth and placed in tubes of polypropylene with screw caps. The liquid culture medium was then inoculated with suspensions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial adherence; Biofilm; Biofouling; Aluminum packaging.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400017