Effects of water flow on ventilation rate and plasma cortisol in Nile tilapia introduced into novel environment

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorMemorial University of Newfoundland-
Autor(es): dc.creatorRoza e Silva, Maria Luiza [UNESP]-
Autor(es): dc.creatorPereira, Rafaela Torres [UNESP]-
Autor(es): dc.creatorArvigo, Alexandre Luiz [UNESP]-
Autor(es): dc.creatorZanuzzo, Fábio Sabbadin-
Autor(es): dc.creatorBarreto, Rodrigo Egydio [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:44:32Z-
Data de disponibilização: dc.date.available2022-02-22T00:44:32Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.aqrep.2020.100531-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205513-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205513-
Descrição: dc.descriptionWater flow is a typical hydrodynamic variable of natural occurrence in fish's lifetime and understanding its impact on biological processes (e.g. stress) can contribute to improve welfare in captive/farmed fish. For that, we tested whether water flow is a stressor by itself in a non-rheophilic (i.e. theoretically sensitive to water flow) fish species: Nile tilapia (Oreochromis niloticus). Additionally, this species was chosen due to its importance for world aquaculture and because is cultivated in a number of systems which the water flow could potentially be a stressor such as indoor tanks, recirculating aquaculture systems, biofloc system and cages. Here, we exposed fish to a novel environment with (520 L h−1) or without a deliberated water flow, and we measured plasma cortisol and ventilation rate (VR) as indicators of stress. In a first experiment, the VR was reduced by flow immediately after tilapia transference to a novel environment (16 min of evaluation), but cortisol was not affected. The plasma cortisol levels were also measured in a second experiment, 30 min, 1, 2 and 4 h after transference to a novel environment, but was also not affected by the presence of flow. In a theoretical perspective, flow is not a stressor by itself in a non-rheophilic species. It acted as a hydrodynamic factor that decrease the magnitude of ventilation response in a fish introduced into a novel environment, without effects on plasma cortisol levels. Therefore, the water flow eventually can be used to assist fish oxygenation after a disturbance event, such as introduction into a novel environment.-
Descrição: dc.descriptionDepartment of Structural and Functional Biology Institute of Biosciences of Botucatu UNESP CAUNESP-
Descrição: dc.descriptionDepartment of Ocean Sciences Memorial University of Newfoundland-
Descrição: dc.descriptionDepartment of Structural and Functional Biology Institute of Biosciences of Botucatu UNESP CAUNESP-
Idioma: dc.languageen-
Relação: dc.relationAquaculture Reports-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBeat-
Palavras-chave: dc.subjectCortisol-
Palavras-chave: dc.subjectNovel environment-
Palavras-chave: dc.subjectOpercular-
Palavras-chave: dc.subjectOreochromisniloticus-
Palavras-chave: dc.subjectRate-
Título: dc.titleEffects of water flow on ventilation rate and plasma cortisol in Nile tilapia introduced into novel environment-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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