Effect of low water temperature on the stress, innate immune, and antioxidant responses of pacu, Piaractus mesopotamicus, a sub-tropical fish

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dc.contributor.authorPereira de Faria, Camila de Fátima [UNESP]
dc.contributor.authorPiedade, Allan Emilio [UNESP]
dc.contributor.authorUrbinati, Elisabeth Criscuolo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T13:51:53Z
dc.date.available2023-07-29T13:51:53Z
dc.date.issued2023-01-01
dc.description.abstractThe sustainability of aquaculture is subject to environmental changes, such as changes in temperature, which affect the physiological homeostasis of fish. Thermal shock (natural or anthropogenic) is a stress condition that results in a sequence of physiological responses and even mortality. Considering the impact of sudden reductions in temperature on the biological systems and that this occurrence is common in regions where pacu (Piaractus mesopotamicus) is farmed, we evaluated the stress, immune, and antioxidant responses of the species exposed to temperature drop. Two groups of fish were exposed to 28 °C or 16 °C for 24 h, and then fish were kept at 28 °C to recover and be sampled: before the temperature drop (baseline); after 24 h of cold exposure; and 3, 8, and 24 h after the return to 28 °C (recovery). The exposure of pacu to 16 °C did not alter the stress biomarkers after 24 h, but it activated the innate immune system (leukocyte respiratory activity, hemolytic activity of the complement system, and serum lysozyme concentration). It also promoted oxidative stress without altering most of the antioxidant system indicators, except for an initial reduction of glutathione peroxidase (GPx) activity after exposure to 16 °C and a late activation, besides the late activation of glutathione transferase (GST), probably as a compensatory process to reduce tissue damage. Pacu was sensitive to temperature changes, but it was able to activate immune and compensatory responses to mitigate oxidative stress. The results will help producers in the management of pacu during periods of thermal changes, such as in autumn and winter.en
dc.description.affiliationUniversidade Estadual Paulista UNESP–Centro de Aquicultura, Campus de Jaboticabal, Via de Acesso Prof. Paulo Donato Castelane, S/N-Vila Industrial, Jaboticabal
dc.description.affiliationUniversidade Estadual Paulista UNESP–Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, Via de Acesso Prof. Paulo Donato Castelane, S/N-Vila Industrial, Jaboticabal
dc.description.affiliationUnespUniversidade Estadual Paulista UNESP–Centro de Aquicultura, Campus de Jaboticabal, Via de Acesso Prof. Paulo Donato Castelane, S/N-Vila Industrial, Jaboticabal
dc.description.affiliationUnespUniversidade Estadual Paulista UNESP–Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, Via de Acesso Prof. Paulo Donato Castelane, S/N-Vila Industrial, Jaboticabal
dc.identifierhttp://dx.doi.org/10.1007/s10499-023-01125-4
dc.identifier.citationAquaculture International.
dc.identifier.doi10.1007/s10499-023-01125-4
dc.identifier.issn1573-143X
dc.identifier.issn0967-6120
dc.identifier.scopus2-s2.0-85153042828
dc.identifier.urihttp://hdl.handle.net/11449/248723
dc.language.isoeng
dc.relation.ispartofAquaculture International
dc.sourceScopus
dc.subjectAntioxidant system
dc.subjectAquaculture
dc.subjectCortisol
dc.subjectImmune system
dc.subjectOxidative stress
dc.subjectThermal shock
dc.titleEffect of low water temperature on the stress, innate immune, and antioxidant responses of pacu, Piaractus mesopotamicus, a sub-tropical fishen
dc.typeArtigo
unesp.author.orcid0000-0003-3623-1460[1]
unesp.author.orcid0000-0001-6975-6736[2]
unesp.author.orcid0000-0001-6623-8095[3]

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Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp