Influência da temperatura na infecção de tilápias do nilo por streptococcus agalactiae

Página do item simplificado
dc.contributor.authorMarcusso, Paulo Fernandes [UNESP]
dc.contributor.authorAguinaga, Jefferson Yunis [UNESP]
dc.contributor.authorDa Silva Claudiano, Gustavo [UNESP]
dc.contributor.authorEto, Silas Fernandes [UNESP]
dc.contributor.authorFernandes, Dayanne Carla [UNESP]
dc.contributor.authorMello, Hurzana [UNESP]
dc.contributor.authorDe Almeida Marinho Neto, Fausto
dc.contributor.authorSalvador, Rogério
dc.contributor.authorDe Engrácia Moraes, Julieta Rodini [UNESP]
dc.contributor.authorDe Moraes, Flávio Ruas [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade do Norte do Paraná, Campus Luiz Meneghel
dc.date.accessioned2022-04-29T07:25:59Z
dc.date.available2022-04-29T07:25:59Z
dc.date.issued2015-01-01
dc.description.abstractEnvironmental changes affect fish homeostasis, turning them more susceptible to diseases. In Brazil, outbreaks of Streptococcus agalactiae infection have been reported in Nile tilapia when they are outside of their thermal comfort zone. This investigation evaluated mortality rate and which were the most infected organs at temperatures that naturally occurred in southern of Brazil. Forty Nile tilapia (Oreochromis niloticus) were infected with S. agalactiae and distributed in four groups (n=10) and each group was exposed to a different temperature: G1: 24°C, G2: 26°C, G3: 28°C, and G4: 32°C. Fish were monitored for 10 days. In this period, fish that presented irreversible clinical signs were sacrificed and samples of brain, liver, and kidney were collected for bacteriological and molecular analysis. Signs compatible with a streptococcal infection were observed in all groups. Highest mortality rates occurred at 24°C and 32°C. The brain was the most affected organ with the highest percentage of isolation of S. agalactiae by both methods of diagnosis. The results suggest that, as in mammals, temperatures that are further away from the comfort zone influence fish homeostasis, increasing susceptibility to bacterial infections.en
dc.description.affiliationUniversidade Estadual Paulista “Júlio de Mesquita Filho”, Departamento de Patologia Animal
dc.description.affiliationUniversidade Estadual Paulista “Júlio de Mesquita Filho”, Centro de Aquicultura
dc.description.affiliationUniversidade do Norte do Paraná, Campus Luiz Meneghel
dc.description.affiliationUnespUniversidade Estadual Paulista “Júlio de Mesquita Filho”, Departamento de Patologia Animal
dc.description.affiliationUnespUniversidade Estadual Paulista “Júlio de Mesquita Filho”, Centro de Aquicultura
dc.format.extent57-62
dc.identifierhttp://dx.doi.org/10.11606/issn.1678-4456.v52i1p57-62
dc.identifier.citationBrazilian Journal of Veterinary Research and Animal Science, v. 52, n. 1, p. 57-62, 2015.
dc.identifier.doi10.11606/issn.1678-4456.v52i1p57-62
dc.identifier.issn1678-4456
dc.identifier.issn1413-9596
dc.identifier.scopus2-s2.0-84927777236
dc.identifier.urihttp://hdl.handle.net/11449/227964
dc.language.isopor
dc.relation.ispartofBrazilian Journal of Veterinary Research and Animal Science
dc.sourceScopus
dc.subjectHomeostasis
dc.subjectOreochromis niloticus
dc.subjectTeleost
dc.subjectThermal stress
dc.titleInfluência da temperatura na infecção de tilápias do nilo por streptococcus agalactiaept
dc.title.alternativeInfluence of temperature on streptococcus agalactiae infection in nile tilapiaen
dc.typeArtigo

Arquivos

Coleções

Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp