Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 33
Primeira ... 12 ... Última
Imagem não selecionada

Imprime registro no formato completo
A comparative study on the use of different preparations of decapsulated <i>Artemia</i> cysts as food for rearing African catfish (<i>Clarias gariepinus</i>) larvae OMA
Pector, R.; Tackaert, W.; Abelin, P.; Ollevier, F.P.; Sorgeloos, P..
African catfish (<i>Clarias gariepinus</i>) larvae were fed on five preparations of decapsulated Great Salt Lake <i>Artemia</i> cysts: 1) dried (35°C, 6 h) and UV-irradiated cysts; 2) heated cysts (80°C, 10 min); 3) brine dehydrated and UV irradiated cysts; 4) micro-bound diet 1(with intact decapsulated cysts used in diet preparation 1); and 5) micro-bound diet 2 (with crushed and shifted decapsulated diet used in diet preparation 1). The larvae were fed from the first day after yolk-sac resorption (fourth day after hatching). After a 14-d rearing period, larvae fed on dried or heated decapsulated cysts or micro-bound diet 1. Feeding micro-bound diet 2 resulted in a significantly lower average gain in weight as compared to the other...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemia; Clarias gariepinus.
Ano: 1994 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2660
Imagem não selecionada

Imprime registro no formato completo
An improved method for artificial infection of the European eel, <i>Anguilla anguilla</i>, with <i>Anguillicola crassus</i> (Nematoda, Dracunculoidea) OMA
De Charleroy, D.; Cannaerts, V.; Augustijn, H.; Grisez, L.; Boon, J.; Ollevier, F.P..
A standardized method was developed for artificially infecting the European eel with <i>Anguillicola crassus</i>, a parasitical swim bladder nematode. For this purpose, an intermediate host, <i>Paracyclops fimbriatus</i>, and a paratenic host, <i>Cyprinus carpio</i>, were used. Parasite prevalence in the artificially infected eels was very high, although there was a large variation in the number of worms per eel. Compared to other methods of artificial infection described in the literature, this method appears to be more efficient ad reliable; there were also more infectious larvae that were recovered and the mortality rate of eels under treatment was lower.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hosts Infestation Invertebrate larvae Methodology Mortality Swim bladder Anguilla anguilla (Linnaeus; 1758) Anguillicola crassus Copepoda [copepods] Cyprinus carpio Nematoda [Nematodes] Paracyclops fimbriatus (Fischer; 1853).
Ano: 1990 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3073
Imagem não selecionada

Imprime registro no formato completo
An index of biotic integrity characterizing fish populations and the ecological quality of Flandrian water bodies OMA
Belpaire, C.; Smolders, R.; Vanden Auweele, I.; Ercken, D.; Breine, J.; Van Thuyne, G.; Ollevier, F.P..
A multimetric fish Index of Biotic Integrity (IBI) was composed to assess the biotic integrity of Flandrian water bodies. As fish communities differ substantially between standing waters, running waters of the bream zone and running waters of the barbel zone, eight candidate metrics for each of these water types or zones were identified, representing three major classes of biological attributes. These are species richness and composition, fish condition and abundance, trophic composition. The metrics were tested and modified where needed. The IBI was applied throughout Flanders on 104 locations in standing waters, 500 locations in waters of the bream zone and 257 locations in waters of the barbel zone. Standing waters scored substantially different from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance Aquatic communities Body conditions Community composition Condition factor Freshwater environments Freshwater fish Inland water environment Species diversity Trophic relationships Trophic structure Water bodies Pisces [Fish] Belgium Belgium; Flanders.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4904
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
Comparison of the fatty acid profile of wild caught fingerlings and yolk sac sea bass (<i>Dicentrarchus labrax</i>) larvae with cultured healthy larvae and larvae suffering from whirling disease OMA
Corneille, S.; Agius, C.; Ollevier, F.P..
Analysis of the fatty acids of total lipids of wild fingerlings (1-4 g) of sea bass (<i>Dicentrarchus labrax</i>) caught off the northcoast of France shows that more than 30% of total fatty acids consists of the two essential fatty acids eiopentaenoic (C20:5 n-3) and docosahaenoic (C22:6 n-3) acids. One- and three-day old yolk sac larvae have even higher amounts of these two important fatty acids (about 40%). On the other hand, laboratory-reared 60-day old larvae had much lower concentrations of C20:5 n-3 (4% of total fatty acids) and C22:6 n-3 (5,5% of total fatty acids). In larvae suffering from whirling or spinning disease the percentage of C20:5 n-3 was only 2,8% and only traces of C22:6 n-3 were found. These results emphasize the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dicentrarchus labrax [Bass].
Ano: 1990 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3059
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
Efficacy of some anthelmintics against the swimbladder nematode <i>Anguillicola crassus</i> of eel <i>Anguilla anguilla</i> under saltwater conditions OMA
Geets, A.; Liewes, E.W.; Ollevier, F.P..
Six anthelmintic drugs, Ivermectin, Closantel, Safewormer, Masoten, Oxfendazole and L-Levamisol·HCL were screened for their efficacy against <i>Anguillicola crassus</i>, a swimbladder nematode of European eel <i>Anguilla anguilla</i>. All experiments were carried out under saltwater conditions. Of the 6 drugs, L-Levamisole·HCL used in a bath treatment gave the most promising results. Evaluation of the curative dose of L-Levamisole·HCL showed that a long-term treatment (24h). Dosages lower than 20 mg 1<sup>-1</sup> showed a lower efficacy against <i>Anguillicola crassus</i>. However, even with a long-term, high-dosage treatment, some recovery of adult nematodes with sublethal damage and/or migration of viable...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anguilla anguilla (Linnaeus; 1758) Anguillicola crassus.
Ano: 1992 URL: http://www.vliz.be/imisdocs/publications/299063.pdf
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
Fish species of the lower Zeeschelde (Belgium): a comparison with historical checklists OMA
Van Damme, P.A.; Hostens, K.; Ollevier, F.P..
In the 19th century approximately 40 fish species (excluding freshwater species) were recorded in the lower Zeeschelde between the Dutch/Belgian border and Antwerpen. In comparison with the 19th century and the first half of the 20th century the total number of fish species in the Beneden-Zeeschelde has decreased considerably. The present checklist (1991-1993) of fishes of the lower Zeeschelde (excluding freshwater species) contains only 26 species. The fish community is composed of marine species (13), catadromous species (3), estaurine residents (9) and one anadromous fish species. Besides, 6 freshwater fis species have presently been recorded. The distribution of diadromous fishes, estaurine residents and freshwater fishes is probably greately affected...
Tipo: Info:eu-repo/semantics/article
Ano: 1994 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=1575
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
Marine aquaculture in Flanders OMA
Ollevier, F.P.; Lavens, P.; Sorgeloos, P..
Tipo: Info:eu-repo/semantics/article
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2882
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
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
Imagem não selecionada

Imprime registro no formato completo
Palatability enhancing nutrients for the European eel, <i>Anguilla anguilla</i> L. OMA
Pacolet, W.; Reynders, K.; Ollevier, F.P..
Feeding experiments with European glass eels <i>Anguilla anguilla</i> L. demonstrated a high degree of attractiveness for the natural diets Tubifix and cod roe. Previous experiments had indicated that incorporation of bovine spleen and/or blood into paste feeds significantly improved the growth rate and survival. To increase feed consumption, the effect of some basic components available from the current generation of chemo-attractants were evaluated. Using a modified Omission Test Procedure, we focused on monosodiumglutamate, betaine, the nucleotides IMP and GMP, and fractions of cattle blood. These components were incorporated into non-attractive casein-based test diets and administered following standardized procedures to intensively...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feed composition; Fish culture; Food additives; Food consumption; Food organisms; Nutritive value; Organoleptic properties.
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2884
Imagem não selecionada

Imprime registro no formato completo
Paratenic hosts of the swimbladder nematode <i>Anguillicola crassus</i> OMA
Thomas, B.; Ollevier, F.P..
The host specificity and population dynamics of <i>Anguillicola crassus</i> in a number of paratenic hosts were investigated. Various freshwater fish species were sampled monthly (March 1990 to March 1991) from the Kolenhaven (Albertcanal, Genk, Belgium) and examined for L<sub>3</sub>-larvae of <i>Anguillicola crassus</i>. Sixteen species were found to be infected: all the physoclist species examined (<i>Gymnocephalus cernua, Lepomis gibbosus, Ictalurus nebulosus, Stizostedion lucioperca, Gasterosteus aculeatus, Oreochromis niloticus</i> and <i>Perca fluviatilis</i>) and those physostome species of which a sufficient number could be examined to detect the infection (<i>Gobio gobio, Leuciscus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance; Endoparasites; Freshwater fish; Hosts; Introduced species; Parasites; Population dynamics; Specificity; Swim bladder; Anguillicola crassus; Pisces [Fish].
Ano: 1992 URL: http://www.vliz.be/imisdocs/publications/299068.pdf
Imagem não selecionada

Imprime registro no formato completo
Population biology of <i>Anguillicola crassus</i> in the final host <i>Anguilla anguilla</i> OMA
Thomas, K.; Ollevier, F.P..
Eels were sampled twice a month (March 1990 though March 1991) at the Kolenhaven (Albertcanal, Genk, Belgium) and examined for <i>Anguillicola crassus</i> nematodes in the swimbladder. Averaged over all samples, 90.2% of the 345 eels were infected with a mean intensity (averaged for all stages) of 17 nematodes. Thirty-one percent of all nematodes, which were adult worms or their remnants, were present in the swimbladder lumen, while the other 69% which consisted of the third or fourth larval stage and preadults were found in the swimbladder wall. No clear seasonal fluctuations in parasite prevalence or mean intensity were observed. Both L<sub>3</sub>-larvae and mature adult worms were present throughout the year. Eggs or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance Endoparasites Life history Parasitic diseases Population density Seasonality Statistical analysis Swim bladder Anguilla anguilla (Linnaeus; 1758) Anguillicola crassus Belgium.
Ano: 1992 URL: http://www.vliz.be/imisdocs/publications/299071.pdf
Registros recuperados: 33
Primeira ... 12 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional