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	Provedor de dados OMA (37) Autor Ollevier, F.P. (37) Grisez, L. (9) Sorgeloos, P. (7) Van Damme, P.A. (6) Belpaire, C. (3) De Charleroy, D. (3) Lavens, P. (3) Pector, R. (3) Swings, J. (3) De Leenheer, A.P. (2) Geets, A. (2) Hamerlynck, O. (2) Merchie, G. (2) Nelis, H. (2) Pacolet, W. (2) Thomas, K. (2) Thyssen, A. (2) Van Damme, P. (2) Volckaert, F.A.M.J. (2) van Houdt, R. (2) Mais... Palavra-chave Clarias gariepinus (4) Anguillicola crassus (3) Fish culture (3) Fish diseases (3) Freshwater fish (3) Vibrio anguillarum (3) 1758) Anguillicola crassus (2) Aquaculture (2) Artemia (2) Bacterial diseases (2) Fish larvae (2) Food organisms (2) Hosts (2) North Sea (2) Parasites (2) Pathogens (2) Scophthalmus maximus (2) Swim bladder (2) 1758) (1) 1758) Anguillicola crassus Belgium (1) Mais... Tipo do documento Info:eu-repo/semantics/article (37) Ano 2001 (1) 2000 (3) 1999 (1) 1998 (1) 1997 (4) 1996 (5) 1995 (3) 1994 (2) 1993 (2) 1992 (4) 1991 (5) 1990 (3) 1989 (3) Mais... País Belgium (37) Idioma Inglês (37)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 37 Primeira ... 1 2 ... Última Ecological approach of macro-fouling prevention and control in cooling systems OMA Denayer, B.; De Ranter, K.; Van Poele, J.; Ollevier, F.P.. Biofouling is a very frequent and serious problem in the cooling systems of electrical power stations. An investigation is being carried out at the Doel nuclear power station to discover ways of combating micro-fouling. Micro-fouling is combated preventively and curatively using a combination of chlorine, biofilm wetting agent and dispersing agent. This treatment removes the slime layer, which can act as a primary attachment point for macro-organisms.In the study of the macro-fouling in the cooling circuits, a monitoring method was developed which uses artificial substrates to provide direct data on the colonization and growth of these organisms. On the basis of the data obtained, the treatment frequency for the prevention or combating of biofouling was... Tipo: Info:eu-repo/semantics/article Ano: 1992 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2746 Mode of infection and spread of <i>Vibrio anguillarum</i> in turbot <i>Scophthalmus maximus</i> larvae after oral challenge through life feed OMA Grisez, L.; Chair, M.; Sorgeloos, P.; Ollevier, F.P.. The infection route of the marine fish pathogen <i>Vibrio anguillarum</i> was studied after oral challenge of the juvenile turbot <i>Scophthalmus maximus</i> L. through a life feed. <i>Artemia</i> nauplii were incubated in a suspension of <i>V. anguillarum</i> cells, and subsequently fed twice to the fish. All challenged fish died within 4d after the first challenge, while no mortality occurred in the non-challenged controls. The results of an immunohistochemical examination of the sectioned fish samples clearly demonstrated that <i>V. anguillarum</i> cells were ingested by the <i>Artemia</i> and that the latter were ingested by the fish. Bacteria were released from the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Scophthalmus maximus (Linneaus; 1758) Vibrio anguillarum. Ano: 1996 URL: http://www.vliz.be/imisdocs/publications/299074.pdf The use of API 20E for the identification of <i>Vibrio anguillarum</i> and <i>V. ordalii</i> OMA Grisez, L.; Ceusters, R.; Ollevier, F.P.. Sixty-eight strains of <i>Vibrio anguillarum</i>, five of <i>V. ordalii</i> and the type strains of <i>V. alginolyticus, V. carchariae, V. damsela</i> and <i>V. parahaemolyticus</i> were compared using the API 20E gallery. Within the <i>V. anguillarum</i> strains, distinct groups could be separated mainly on the basis of their reaction on indole production and the fermentation of amygdalin and arabinose. <i>Vibrio ordalii</i>, the former <i>V. anguillarum</i> biotope 2, could easily be separated from <i>V. anguillarum</i> and from the other fish pathogenic <i>Vibrio</i> spp. Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial diseases; Disease control; Disease detection; Fish diseases; Identification; Vibrio carchariae; Vibrio ordalii; Vibrio alginolyticus; Vibrio anguillarum; Vibrio damsela; Vibrio parahaemolyticus. Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2859 Hatching, survival, activity and penetration efficiency of second-stage larvae of <i>Anguillicola crassus</i> (Nematoda) OMA Thomas, K.M.; Ollevier, F.P.. Hatching of eggs of <i>Anguillicola crassus</i> was studied at temperatures between 5 and 30°C. Hatching occurred between 10 and 30°C and the incubation time was inversely related to temperature. Survival, spontaneous and excitatory rate of activity of 2nd-stage larvae of <i>A. crassus</i> were also affected by temperature. The percentage of larvae eaten by <i>Paracyclops fimbriatus</i> was not always influenced by the activity of the larvae. Penetration efficiency into the haemocoel of the intermediate host was highest for freshly hatched larvae and declined gradually with age. Completely non-active larvae were still able to penetrate, although penetration efficiency was lower. Tipo: Info:eu-repo/semantics/article Palavras-chave: Anguillicola crassus. Ano: 1993 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2788 Comparative serology of the marine fish pathogen <i>Vibrio anguillarum</i> OMA Grisez, L.; Ollevier, F.P.. The different serotyping systems, based on thermostable O antigens, reported for <i>Vibrio anguillarum</i> and <i>V. ordalii</i> were compared by quantitative agglutination, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and subsequent silver staining or Western blotting (immunoblotting) of purified lipopolysaccharide (LPS), using polyclonal rabbit antisera. The results demonstrate that 16 different serotypes within <i>V. anguillarum</i> (designated 01 to 016) can be distinguished. Each of these serotypes is characterized by a distinct polysaccharide banding pattern, as revealed by silver-stained gels of purified LPS. The comparative analysis allowed a complete alignment of the different stereotypes for the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pathogens; Serology; Vibrio anguillarum. Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2970 Vibrios associated with routine productions of <i>Brachionus plicatilis</i> OMA Verdonck, L.; Grisez, L.; Sweetman, E.; Minkoff, G.; Sorgeloos, P.; Ollevier, F.P.; Swings, J.. Surveys for bacteriological analysis were carried out in 1990-1991 in two different marine fish hatcheries located in Greece and northern Spain. Samples were taken from 12 different routine productions of <i>Brachionus plicatilis</i> before and during enrichment. Isolates were characterized by whole cell fatty acid methyl ester analysis and by BIOLOG metabolic fingerprinting. <i>Vibrio anguillarum</i> and/or <i>Vibrio alginolyticus</i> were dominant <i>Vibrio</i> species in the rotifer samples taken after enrichment and rinsing, before being delivered to the fish larvae. None of the <i>Vibrio anguillarum</i> strains belonged to the pathogenic serotypes for juvenile and adult fish. Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachionus plicatilis Müller; 1786. Ano: 1997 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2984 Endoparasitic helminths of the whitespotted rabbitfish (<i>Siganus sutor</i> (Valenciennes, 1835)) of the Kenyan coast: distribution within the host population and microhabitat use OMA Geets, A.; Ollevier, F.P.. The parasitic fauna of the alimentary tract of adult whitespotted rabbitfish, <i>Siganus sutor</i>, sampled in December 1990 at the Kenyan coast, was investigated. Five endoparasites were found: the digenean trematodes <i>Opisthogonoporoides hanumanthai, Gyliauchen papillatus</i> and <i>Hexangium sigani</i>, the acanthocephalan <i>Sclerocollum rubrimaris</i> and the nematode <i>Procammalanus elatensis</i>. No uninfected fish, nor single species infections occurred. Parasite population data showed very high prevalences for all endoparasites, ranging from 68.18% to 100%. <i>G. papillatus</i> occurred with the highest mean intensity, 201.68 ± 12.54 parasites per infected fish. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Siganus sutor [shoemaker spinefoot] ISW; Kenyan Coast. Ano: 1996 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2966 The effect of <i>Artemia</i> -supplementation of dry foods on growth and survival of <i>Clarias gariepinus</i> (Burchell 1822) larvae OMA Van Damme, P.; Pacolet, W.; Sulem Yong, S.; Fremaut, D.; Ollevier, F.P.. Two experiments were performed in order to determine the effect of supplementation of dry foods with live <i>Artemia</i> nauplii on the growth, survival, rate of cannibalism, and length-weight relationships of <i>Clarias gariepinus</i> larvae. It was found that <i>Artemia</i> -supplementation resulted in a significantly higher growth rate. The "condition", expressed as a length-weight relationship, was likewise altered after supplementation. The survival and rate of cannibalism were not influenced by supplementation. <i>Artemia</i> -supplementation of dry foods was compared with other approaches which are based on the concept of the 'adaptation weight'. Tipo: Info:eu-repo/semantics/article Palavras-chave: Adaptations; Freshwater fish; Weight; Artemia; Clarias gariepinus. Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3193 Protein digestion in juvenile turbot (<i>Scophthalmus maximus</i>) and effects of dietary administration of <i>Vibrio proteolyticus</i> OMA De Schrijver, R.; Ollevier, F.P.. The trial was made to study the protein digestion in juvenile turbot during passage of digesta from stomach to rectum. Moreover, diet supplementation with the potential probiotic bacteria, <i>Vibrio proteolyticus</i>, was evaluated with regard to protein digestion. For a 3-week period, fish (25-30 g) were fed by oral intubation and received either a liquid mixture consisting of 40% nonpurified control diet and 60% water or this mixture supplemented with 10 <sup>10</sup> viable <i>V. proteolyticus</i> ml <sup>-1</sup>. Daily dry matter was 1.5% body weight. As digesta progressed from the stomach to the foregut, hindgut and rectum, the increase in apparent nitrogen digestibility was accompanied by higher... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Diets; Digestibility; Digestion; Feeding experiments; Fish culture; Food conversion; Nitrogen; Probiotics; Probiotics; Proteins; Scophthalmus maximus; Stomach; Scophthalmus maximus; Vibrio proteolyticus. Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=9593 Application of AFLP for taxonomic and epidemiological studies of <i>Photobacterium damselae</i> subsp. <i>piscicida</i> OMA Thyssen, A.; Van Eygen, S.; Hauben, L.; Goris, J.; Swings, J.; Ollevier, F.P.. A collection of 106 <i>Photobacterium damselae</i> subsp. <i>piscicida</i> strains and 19 <i>Photobacterium damselae</i> subsp. <i>damselae</i> strains, including reference and type strains, were genetically characterized using AFLP. The total genomic DNA of each bacterial strain was digested using restriction endonucleases <i>Hind</i>III and <i>Taq</i>I. Using numerical analysis, six clusters were recognized. The largest cluster (n=106) contained the majority of the strains tested and consisted exclusively of <i>Photobacterium damselae</i> subsp. <i>piscicida</i>. The <i>Photobacterium damselae</i> subsp. <i>damselae</i> strains fell... Tipo: Info:eu-repo/semantics/article Palavras-chave: Epidemiology; Taxonomy. Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=9527 Live food mediated vitamin C transfer to <i>Dicentrarchus labrax</i>and <i>Clarias gariepinus</i> OMA Merchie, G.; Lavens, P.; Dhert, Ph.; Pector, R.; Mai Soni, A.F.; Nelis, H.; Ollevier, F.P.; De Leenheer, A.P.; Sorgeloos, P.. Live food enrichment techniques, using formulated diets and emulsions for improving the nutritional quality of <i>Brachionus</i> and <i>Artemia</i> , were studied as a tool for transferring ascorbic acid (AA) to fish larvae. <i>Artemia</i> nauplii enriched for 24h with an experimental emulsion containing 20% HUFA and 0%, 10% and 20% ascorbyl palmitate (AP) were administered to catfish larvae in a 20-day feeding trial. Survival was not affected by the dietary AA, but from day 7 onwards a significantly positive effect of supplemental AA on growth was demonstrated. At the end of the experiment the 20% AP group weighed 30% more than the control (0% AP), i.e. 9.5 and 6.3mg DW, respectively. Evaluation of the physiological... Tipo: Info:eu-repo/semantics/article Palavras-chave: Clarias gariepinus Dicentrarchus labrax (Linnaeus; 1758) [Bass]. Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2581 Search for beneficial bacterial strains for turbot (<i>Scophthalmus maximus</i> L.) larviculture OMA Huys, L.; Dhert, P.; Robles, R.; Ollevier, F.P.; Sorgeloos, P.; Swings, J.. The aerobic bacterial flora in the gut of turbot larvae and their influence on larval survival was examined. Two turbot experiments were run with six replicates each time. Large variation, from 0% up to 44%, was observed in the survival percentage of turbot larvae. There was no correlation between the number of bacteria present in the gut of turbot larvae and the larval survival rate. During both experiments, all replicates followed nearly the same rate of bacterial development in the gut of turbot larvae going from circa 10<sup>2</sup> CFU larva<sup>-1</sup> just before first feeding at day 3 post hatch to 10<sup>5</sup> CFU larva<sup>-1</sup> at day 9 post hatch.In total, 127 bacterial isolates from 12... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerobic bacteria; Aquaculture; Commensals; Digestive system; Fish culture; Fish larvae; Gastrointestinal tract; Microorganisms; Rearing; Scophthalmus maximus; Survival; Bacteria; Scophthalmus maximus; Vibrio mediterranei. Ano: 2001 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=5720 The effect of dietary salt (NaCl) supplementation on the growth, survival and food conversion rate of African catfish (<i>Clarias gariepinus</i> B.) larvae OMA Zamal, H.; Maithya, J.; Pector, R.; Ollevier, F.P.. Tipo: Info:eu-repo/semantics/article Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2917 The life cycle of <i>Anguillicola crassus</i> OMA De Charleroy, D.; Grisez, L.; Thomas, K.; Belpaire, C.; Ollevier, F.P.. For some years now the parasitic swim bladder nematode <i>Anguillicola crassus</i> of the European eel <i>Anguilla anguilla</i> L., has been reported from several European countries. The entire life history of this parasite has recently been elucidated in our laboratory. Young larvae leave the swim bladder of the host via the pneumatic duct and reach the water through the digestive tract. They are ingested by small copepods (Cyclopoida), which act as intermediate hosts. Larvae remain in the hemocoel until the copepods are eaten by the final host, the European eel. Larvae penetrate through the intestinal wall and reach the swim bladder where they develop into adults. When infected copepods are eaten by other small fish, such as carp... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological vectors; Disease transmission; Fish diseases; Food chains; Freshwater fish; Hosts; Life cycle; Parasites; Parasitic diseases; Predation; Predators; Swim bladder; Anguillicola crassus. Ano: 1990 URL: http://www.vliz.be/imisdocs/publications/3074.pdf Extended serotyping scheme for <i>Vibrio anguillarum</i> with the definition and characterization of seven provisional O-serogroups OMA Pedersen, K.; Grisez, L.; van Houdt, R.; Tiainen, T.; Ollevier, F.P.; Larsen, J.L.. The present paper summarizes the serotyping scheme of the fish pathogenic bacterium <i>Vibrio anguillarum</i> and defines seven additional O-serogroups. Strains, collected in our laboratories that were nontypable with antisera against the previously defined 16 O-serotypes, were used for generating new antisera and were characterized further by means of LPS profiles, Western blots, and serological reactions. On the basis of the results, it is suggested that the seven new O-serogroups are to be included in the existing serotyping system as serotypes O17-O<sub>2</sub>3. However, the existence of further <i>V. anguillarum</i> strains that were not typable with any of the 23 O-antisera suggested the existence of additional... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial diseases; Fish diseases; Pathogenic bacteria; Pathogens; Serological studies; Serotypes; Strains; Vibrio anguillarum. Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=9525 Incorporation of brewery activated sludge-single proteins (BSCP) in diets for <i>Clarias gariepinus</i> B. fingerlings OMA De Muylder, E.; Van Damme, P.; Vriens, L.; Nihoul, R.; Ollevier, F.P.. Brewery activated sludge-cell protein (BSCP) was incorporated in high quality feeds for <i>Clarias gariepinus</i> fingerlings at levels of 4-22%. BSCP incorporation was found to have a positive effect on the growth performance up to levels of 22%. The optimum concentration of BSCP in feeds for <i>Clarias gariepinus</i> was 14%. The problems associated with the use of activated sludge are discussed. Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal nutrition; Single cell proteins; Clarias gariepinus. Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3170 Experimentally induced infections of European eel <i>Anguilla anguilla</i> with <i>Anguillicola crassus</i> (Nematoda, Dracunculoidea) and subsequent migration of larvae OMA Haenen, O.L.M.; Grisez, L.; De Charleroy, D.; Belpaire, C.; Ollevier, F.P.. Migration patterns of third-stage <i>Anguillicola crassus</i> larvae, and pathogenesis of the lesions induced by third-stage larvae, was investigated in European eel <i>Anguilla anguilla</i> L. Young elvers (1g) were fed infected <i>Paracyclops fimbriatus</i> (Copepoda). Eel samples were collected and examined histologically at varying intervals during 6 mo post-infection period. Third-stage larvae (L-III) migrated directly through the intestinal wall and body cavity to the swimbladder within 17h post-infection. L-IV larvae were detected 3 mo post-infection, and immature adults were detected within 4 mo post-infection. The parasites occasionally showed aberrant migration paths. Pathological effects caused by the parasite... Tipo: Info:eu-repo/semantics/article Palavras-chave: Larvae Life cycle Pathology Anguilla anguilla (Linnaeus; 1758) Anguillicola crassus. Ano: 1989 URL: http://www.vliz.be/imisdocs/publications/3029.pdf Morphological and morphometric study of crustacean parasites within the genus <i>Lernaeocera</i> OMA Van Damme, P.A.; Ollevier, F.P.. Two species of <i>Lernaeocera</i> are present in the southeastern North Sea. <i>Lernaeocera lusci</i> infects bib <i>Trisopterus luscus</i>, dragonet <i>Callionymus lyra</i> and sand goby <i>Pomatoschistus minutus. L. minuta</i> is a junior synonym of <i>L. lusci.</i>. The second valid species, <i>L. branchialis</i>, infects whiting <i>Merlangius merlangus</i>. The two species can be morphologically separated by the antennary processes, which are present in <i>L. lusci</i> and absent in <i>L. branchialis</i>. Discriminant functions allow complete separation between <i>L. lusci</i> and <i>L. branchialis</i>. There... Tipo: Info:eu-repo/semantics/article Palavras-chave: Lernaeocera Blainville; 1822. Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3130 Four polymorphic microsatellite markers in the European eel <i>Anguilla anguilla</i> (L.) OMA Daemen, E.; Volckaert, F.A.M.J.; Cross, T.F.; Ollevier, F.P.. Clones (<i>Anguilla anguilla</i>) were obtained from a size-selected library (300-800 bp HaeIII, PvuII, EcoRV-digested inserts), by hybridization with gamma super(32)P-labelled (dG-dT) sub(15). The sequences of the loci Aan01, Aan02, Aan03 and Aan04 have been submitted to GenBank/EMBL (acc. nos U67163, U67164, U67165 and U67166). Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomarkers Genetics Anguilla anguilla (Linnaeus; 1758). Ano: 1997 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2930 Use of computer assisted sperm analysis (CASA) for monitoring the effects of pollution on sperm quality of fish: application to the effects of heavy metals OMA Kime, D.E.; Ebrahimi, M.; Nysten, K.; Roelants, I.; Rurangwa, E.; Moore, H.D.M.; Ollevier, F.P.. Computer assisted sperm analysis (CASA) has been used to analyse the effects of cadmium and zinc on the motility of fish sperm treated either for 24h after partial dilution in an extender, or during the final dilution step on the microscope stage during video recording. The progressive motility of catfish sperm, which was not affected by storage for 24h, was decreased after exposure to 100 ppm cadmium or 2000 ppm zinc in extender for 24h. Only 1000 ppm cadmium or 2000 ppm zinc had any effect on motility when added to sperm at the final dilution stage. These results suggest that concentrations of cadmium which have been found to be present in fish gonads as a result of bioaccumulation from the water or diet may decrease the motility of sperm during... Tipo: Info:eu-repo/semantics/article Ano: 1996 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2993 Registros recuperados: 37 Primeira ... 1 2 ... Última

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