Stress responses in juvenile pacu (Piaractus mesopotamicus) submitted to repeated air exposure

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dc.creatorJaqueline Dalbello Biller
dc.creatorFabiano Bendhack
dc.creatorLeonardo Susumu Takahashi
dc.creatorElisabeth Criscuolo Urbinati
dc.date2008
dc.date.accessioned2026-07-07T03:57:54Z
dc.descriptionPacu juveniles (5.2 ± 1.5 g) were submitted to two one-minute air exposures in a 24h interval, and sampled before the exposure (control) and 5, 15, 30 and 60 min., 24 and 48h afterwards for whole-body cortisol, sodium, potassium and calcium ion concentrations. For the first air exposure, there was a trend of increased cortisol concentration after 15 min., whereas in the second air exposure, the cortisol concentration increased significantly within 5 min. after stress was induced. Sodium ion concentration increased significantly 24h after both air exposures. Potassium concentration presented fluctuations over the experimental period. Calcium ion concentration increased progressively from 5 to 30 min., in both air exposures. The repeated air exposures exacerbated the cortisol response, but they did not affect the recovery ability of pacu over the experimental period. Additionally, the whole-body cortisol measurement might be a reliable indicator of stress, when sampled fish are smaller and blood volumes are very low, making samples inadequate for analysis.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303126491012
dc.identifier.urihttp://hdl.handle.net/123456789/448800
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Num.1 Vol.30
dc.subjectAgrociencias
dc.titleStress responses in juvenile pacu (Piaractus mesopotamicus) submitted to repeated air exposure
dc.typeartículo científico

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Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá