SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Diseases in mollusc hatcheries and their paraedox in health management

Grizel, Henri.

The spread of major diseases of molluscs around the world and the increase of transfers need the development of adapted prophylactic strategies and the increase of research in epidemiology, immunology and genetics. The prophylactic strategies must be based on common laws with the establishment of a list of declarable pathogens, with basic sampling rules (sample size, frequency, definition of geographical areas) and with reglementation of the internal transfers. Moreover, specific adapted diagnosis should be developed to increase the sanitary control performance (e.g. ELISA test, DNA probe, cell culture). In the case of an infectious disease the epidemiology studies should be concerned, the relationship between the culture techniques and the disease, the...

Tipo: Text

Palavras-chave: Bonamia ostreae; Mollusc culture; Aquaculture techniques; Pathology; Immunology; Genetics; Epidemiology; Fish diseases; Disease control.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1483.pdf

Etat sanitaire et environnement

Berthe, Franck.

Global molluscan aquaculture production is continuously increasing, dominated by five species, among which the Pacific cupped oyster, Crassostrea gigas, predominates. Hatchery production is accompanying this increase to assist consistent availability of juveniles for restocking, fishery enhancement, genetic improvements as well as for species diversification. Hatchery development contributes significantly to the demand for international transfers of live molluscs; a consequence of which pathogen transfer via transfer of live molluscs is currently recognised as a major cause of epizootic disease outbreaks. Diseases are a primary constraint to mollusc aquaculture growth and sustainability, severely impacting socioeconomic development in many countries....

Tipo: Text

Palavras-chave: Mollusca; Crassostrea gigas; Risks; Mollusc culture; Husbandry diseases; Hatcheries; Disease control.

Ano: 2005

URL: http://archimer.ifremer.fr/doc/2005/acte-3289.pdf

Expériences de traitement des moules (M. edulis) de bouchots de la baie du mont saint-michel parasitées par mytilicola intestinalis - Septembre 1987 et 1988

Morand, M.

This paper presents the different sanitary risks in fish farming and their therapeutic solutions, including the law factors and the environmental aspects.

Tipo: Text

Palavras-chave: France; Disease control; Therapy; Aquaculture.

Ano: 1993

URL: http://archimer.ifremer.fr/doc/1993/acte-1337.pdf

The use of API 20E for the identification of Vibrio anguillarum and V. ordalii

Blateau, Dominique.

Tipo: Text

Palavras-chave: Disease control; Parasite; Mussel rearing.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/rapport-1943.pdf

Grisez, L.; Ceusters, R.; Ollevier, F.P..

Sixty-eight strains of Vibrio anguillarum, five of V. ordalii and the type strains of V. alginolyticus, V. carchariae, V. damsela and V. parahaemolyticus were compared using the API 20E gallery. Within the V. anguillarum strains, distinct groups could be separated mainly on the basis of their reaction on indole production and the fermentation of amygdalin and arabinose. Vibrio ordalii, the former V. anguillarum biotope 2, could easily be separated from V. anguillarum and from the other fish pathogenic Vibrio spp.

An oral challenge for turbot larvae with Vibrio anguillarum

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

Chair, M.; Dehasque, M.; Van Poucke, S.; Nelis, H.; Sorgeloos, P.; De Leenheer, A.P..

There is a need for a standard in vitro procedure to infect larval fish with bacteria. Such a procedure could be used as a tool to evaluate fish quality, verify fish sensitivity to a certain bacterial strain or evaluate the pathogenicity of a bacterium towards a given fish species. The availability of a challenge test is a prerequisite in studies dealing with the effect of different medicinal treatments on diseased fish. An oral challenge test would offer the possibility to investigate the routes of infection via the digestive tract, i.e. after feeding contaminated feeds. The present study aims to verify this hypothesis and proposes a standard challenge procedure for turbot (Scophthalmus maximus) larvae with a pathogenic Vibrio...

Live-food mediated drug delivery as a tool for disease treatment in larviculture: the enrichment of therapeutics in rotifers and Artemia nauplii

Palavras-chave: Bacterial diseases; Digestive system; Disease control; Fish culture; Fish diseases; Fish larvae; Marine fish; Pathogenic bacteria; Vibrio anguillarum.

Ano: 1994

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2552

Verpraet, R.; Chair, M.; Léger, P.; Nelis, H.; Sorgeloos, P.; De Leenheer, A.P..

The live food enrichment technique using emulsions for nutritional deficiencies in rotifers and Artemia was further investigated as a tool for transferring therapeutics through the food chain. Artemia nauplii and the rotifer Brachionus plicatilis were enriched with a self-emulsifying concentrate in which the therapeutic mixture trimetoprim: sulfamethoxazole was incorporated. An analytical method and protocol for the quantification of trimethoprim and sulfamethoxazole in a heterogeneous biological matrix, such as Artemia , was developed using High Performance Liquid Chromatography. When applying a 24h enrichment period, the accumulation of both drugs in Artemia...

Selected bacterial strains protect Artemia spp. from the pathogenic effects of Vibrio proteolyticus CW8T2

Palavras-chave: Aquaculture systems; Disease control; Drugs; Food chains; Therapy; Artemia.

Ano: 1992

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2894

Verschuere, L.; Heang, H.; Criel, G.R.J.; Sorgeloos, P.; Verstraete, W..

In this study Vibrio proteolyticus CW8T2 has been identified as a virulent pathogen for Artemia spp. Its infection route has been visualized with transmission electron microscopy. The pathogen affected microvilli and gut epithelial cells, disrupted epithelial cell junctions, and reached the body cavity, where it devastated cells and tissues. In vivo antagonism tests showed that pre-emptive colonization of the culture water with nine selected bacterial strains protected Artemia juveniles against the pathogenic effects. Two categories of the selected strains could be distinguished: (i) strains providing total protection, as no mortality occurred 2 days after the experimental infection with V....

Live-food mediated drug delivery as a tool for disease treatment in larviculture: 2. A case study with European seabass

Palavras-chave: Aquatic animals; Bacteria; Biological control; Brine shrimp culture; Disease control; Infectious diseases; Microbiological analysis; Pathogenic bacteria; Artemia; Vibrio proteolyticus.

Ano: 2000

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=45

Chair, M.; Romdhane, M.S.; Dehasque, M.; Nelis, H.; De Leenheer, A.P.; Sorgeloos, P..

The purpose of this study is to investigate the possibility of oral delivery of the antibiotics Trimethoprim (TMP) and Sulfamethoxazole (SMX) to marine fish larvae through incorporation of these antibiotics into the live food organism Artemia. SMX and TMP were selected for their wide range action against gram negative pathogenic bacteria and because of their limited solubility in seawater. Ormetoprim-Sulfadimethoxine (brand name Romet-30) is a new combination of a similar antimicrobial drug used in aquaculture. Diseased penaeid larvae fed Romet-30 through the food chain exhibited greater survival than the untreated ones. In an earlier study Verpraet have described a technique for bioencapsulating high doses of more than 500 mu g TMP +...

Temperature and dosage dependent suppression of damping-off caused by Rhizoctonia solani in vermicompost amended nurseries of white pumpkin: (with 3 tables & 2 figures)

Palavras-chave: Antibiotics; Aquaculture techniques; Disease control; Fish culture; Fish larvae; Food additives; Food organisms; Dicentrarchus labrax [Bass].

Ano: 1991

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2805

Phyton

Rivera,MC; Wright,Eduardo R; López,MV; Fabrizio,MC.

It is generally accepted that composts have the potential to provide biological control of plant diseases. However, there has been little research on the use of vermicomposts for the same purpose. The aim of this paper was to evaluate a vermicompost suppressiveness in nurseries of white pumpkin infested with Rhizoctoniasolani. Two assays were carried out at 22 ± 2 °Cand 15 ± 3 °C, with increasing proportions of compost in the substratum. Seedlings with damping-off or incipient crown rot, as well as those that did not emerge as expected for the germination power, were considered diseased. Vermicompost's effectiveness in suppressing the disease depended on dosage and temperature.

URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100016

Palavras-chave: Benincasa hispida; Cucurbitaceae; Disease control; Soilborne pathogen.

Ano: 2004

Components of sustainable animal production and the use of silvopastoral systems

R. Bras. Zootec.

Broom,Donald Maurice.

ABSTRACT There is an urgent need for sustainable animal production systems. A system or procedure is sustainable if it is acceptable now and if its expected future effects are acceptable, in particular in relation to resource availability, consequences of functioning, and morality of action. What might make any animal usage system unsustainable? The system might involve depletion of resources such that a resource becomes unavailable or a product of the system might accumulate to a degree that prevents the functioning of the system. However, any effect which the general public find unacceptable makes a system unsustainable. A production system might be unsustainable because of inefficient usage of world food resources; adverse effects on human health; poor...

Resistance to Septoria lycopersici in Solanum (section Lycopersicon) species and in progenies of S. lycopersicum × S. peruvianum

Palavras-chave: Animal welfare; Disease control; Livestock; Silvopastoral; Sustainability.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000800683

Scientia Agricola

Satelis,Jaqueson Ferreira; Boiteux,Leonardo Silva; Reis,Ailton.

Septoria leaf spot (Septoria lycopersici) is one of the major fungal diseases of tomatoes (Solanum lycopersicum) in tropical and subtropical regions with humid climates and/or in areas cultivated under sprinkler irrigation systems. Sources of resistance have been found in accessions of Solanum (section Lycopersicon) species. However, many of the described sources are not effective under Brazilian conditions. The objective of this work was to evaluate wild and cultivated Solanum (section Lycopersicon) germplasm to S. lycopersici isolates. A collection of 124 accessions was initially evaluated under greenhouse conditions. Ten accessions were highly resistance (HR), whereas 33 were classified as having a resistant (R) response to S. lycopersici isolates....

Lettuce genotype resistance to "soft rot" caused by Pectobacterium carotovorum subsp. carotovorum

Palavras-chave: Breeding; Disease control; Septoria leaf spot.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000300012

Scientia Agricola

Felix,Kátia Cilene da Silva; Oliveira,Willams José de; Mariano,Rosa de Lima Ramos; Souza,Elineide Barbosa de.

Soft rot, caused by Pectobacterium carotovorum subsp. carotovorum (Pcc), is the main bacterial disease affecting lettuce (Lactuca sativa L.) crops in Brazil and leads to significant yield losses. This study aimed to assess the reaction of lettuce genotypes to soft rot induced by a virulent isolate and the stability of the resistance to three isolates varying in virulence. Using a descriptive ordinal scale ranging from 1 to 9 a classification system was defined: class 1 = resistant (R): severity (Sev) < 1.5; class 2 = moderately resistant (MR): 1.5 < Sev < 2.5; class 3 = susceptible (S): 2.5 < Sev < 3.5; class 4 = highly susceptible (HS): Sev > 3.5). Of the 41 tested genotypes, 14 were classified as MR and 27 as S when inoculated with...