Divergent time course of cortisol response to stress in fish of different ages

Koakoski, Gessi; Oliveira, Thiago Acosta; Rosa, João Gabriel Santos da; Fagundes, Michele; Kreutz, Luiz Carlos; Barcellos, Leonardo José Gil

doi:10.1016/j.physbeh.2012.01.013

Cited by 45 publications

(35 citation statements)

References 20 publications

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“…10 g) attained peak cortisol concentrations within 5-30 minutes after active persecution with a pen net, whereas adults (360 days of age, approx. 440 g) experienced the correspondent peak 60 minutes after stressor exposure (Koakoski et al, 2012). Thus, the cortisol peak may not have been detected within 1 h, if the same release pattern occurred with the stressor-type used in this study.…”

Section: Discussionmentioning

confidence: 86%

“…as a result of fish characteristics cannot be discarded as a factor that can influence the results (Ellis et al, 2012;Koakoski et al, 2012). A recent report related the divergent time course of cortisol release in silver catfish of different ages.…”

Section: Discussionmentioning

confidence: 99%

“…For silver catfish (Rhamdia quelen), the fish species used in this study, anesthesia with eugenol and the essential oil of Lippia alba prevented plasma cortisol increase in fish submitted to air exposure (Cunha et al, 2010a, b). This nocturnal species is one of the most widespread inhabitants of South American rivers, and has been considered a good alternative to fish production, as a result of its fast growth rate (Barcellos et al, 2001;Koakoski et al, 2012). It is susceptible to stress resulting from confinement and handling procedures, such as capture, tank transference, and air exposure (Barcellos et al, 2001(Barcellos et al, , 2006Cunha et al, 2010a, b).…”

Section: Introductionmentioning

confidence: 99%

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Effects of anesthesia with the essential oil of Ocimum gratissimum L. in parameters of fish stress

Silva

Garlet

Koakoski

et al. 2015

Rev. bras. plantas med.

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ABSTRACT:The effects of anesthesia with the essential oil of Ocimum gratissimum (EOO) in parameters of stress after handling were investigated in silver catfish (Rhamdia quelen). EOO was obtained from the aerial parts by hydrodistillation. Juveniles were anesthetized with 70 or 300 mg L -1 EOO and submitted to air exposure for 1 minute. The fishes were sampled immediately or transferred to anesthetic-free aquaria until sampling. In the first experiment, juveniles had their blood collected at 0, 1, 4, and 8 h after handling to assay plasma cortisol and blood glucose levels. The unanesthetized animals were restrained manually for blood collection. In the second experiment, water samples of the recovery aquaria were collected to evaluate net ion fluxes at 0 -4 h and 4 -8 h. Water and ethanol controls were also performed under the same conditions. The results showed that the cortisol levels did not differ among the treatments. Hyperglycemia was verified in fish exposed to 70 and 300 mg L -1 EOO at 1 h and 4 h after handling. After 8 h, cortisol and glucose concentrations were lower or similar than those from immediately after handling for all treatments. EOO anesthesia prevented Na + efflux observed in the control groups in both flux periods. There were net Cl -and K + effluxes at 0 -4 h and influxes at 4 -8 h after handling in most treatments, and these fluxes did not differ among the treatments. The results suggest that EOO did not impair stress recovery and did not act as an additional handling stressor in silver catfish.Key words: clove basil, cortisol, glucose, net ion flux, silver catfish. RESUMO: Efeitos da anestesia com o óleo essencial de Ocimum gratissimum L. em parâmetros de estresse de peixes. Os efeitos da anestesia com o óleo essencial deOcimum gratissimum (EOO) em parâmetros de estresse após manuseio foram investigados em jundiás (Rhamdia quelen). EOO foi obtido a partir das partes aéreas por hidrodestilação. Os juvenis foram anestesiados com 70 ou 300 mg L -1 de EOO e expostos ao ar por 1 minuto. Os peixes foram amostrados imediatamente ou transferidos para aquários sem anestésico até amostragem. No primeiro experimento, os juvenis tiveram seu sangue coletado em 0, 1, 4, e 8 h após manuseio para avaliar os níveis de cortisol e glicemia. Os animais não anestesiados foram contidos manualmente para coleta sanguínea. No segundo experimento, amostras de água foram coletadas do aquário de recuperação dos animais para avaliação do fluxo iônico entre 0 -4 h e 4 -8 h. Grupos controles em água e etanol também foram realizados sobre as mesmas condições. Os resultados demonstraram que os níveis de cortisol não diferiram entre os tratamentos. Hiperglicemia foi detectada em peixes expostos a 70 e 300 mg L -1 de EOO em 1 h e 4 h após o manuseio. Após 8 h, os teores de cortisol e glicose foram menores ou similares aqueles imediatamente após o manuseio para todos os tratamentos. A anestesia com EOO preveniu o efluxo de Na + observado para os grupos controle em ambos os períodos avaliados. Ocorreram efluxos de Cl-and ...

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Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of anesthesia with the essential oil of Ocimum gratissimum L. in parameters of fish stress

Silva

Garlet

Koakoski

et al. 2015

Rev. bras. plantas med.

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“…In experiment "A," prestress cortisol levels were measured in individuals from group 1, whereas individuals from groups 2, 3, and 4 were exposed to an acute handling stressor (chasing with a pen net for 60 sec). Cortisol levels were measured in group 2 at five minutes after exposure, according to the procedure reported by Koakoski et al (2012). The cortisol levels were measured in group 3 individuals after they were exposed to the initial stressor and to an additional handling stressor at 12 hours, 48 hours, and 1 week after the first stressor (trials A1, A2, and A3).…”

Section: Methodsmentioning

confidence: 99%

“…The time intervals were chosen because of the cortisol profiles measured previously in R. quelen (Barcellos et al, 2009;Koakoski et al, 2012). We choose for experiments "A1" and "B1" an interval smaller than the 24-h recovery period; for experiments "A2" and "B2," an interval bigger than the recovery period; and for experiments "A3" and "B3," an interval of several days after the cortisol profile recovery.…”

Section: Methodsmentioning

confidence: 99%

Repeated stressors do not provoke habituation or accumulation of the stress response in the catfish Rhamdia quelen

et al. 2013

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Fish repeatedly experience stressful situations under experimental and aquaculture conditions, even in their natural habitat. Fish submitted to sequential stressors can exhibit accumulation or habituation on its cortisol response. We posed a central question about the cortisol response profiles after exposure to successive acute stressors of a similar and different nature in Rhamdia quelen. We have shown that successive acute stressors delivered with 12-h, 48-h, and 1-week intervals provoked similar cortisol responses in juvenile R. quelen, without any habituation or accumulation. The cumulative stress response is more associated to short acute stressors with very short intervals of minutes to hours. In our work, we used an interval as short as 12h, and no cumulative response was found. However, if the length of time between stressors is of a day or week as used in our work the most common and an expected phenomenon is the attenuation of the response. Thus, also, the absence of both accumulation of the stress response and the expected habituation is an intriguing result. Our results show that R. quelen does not show habituation or accumulation in its stress responses to repeated stressors, as reported for other fish species

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Diel changes in plasma cortisol and effects of size and stress duration on the cortisol response in European sea bass (Dicentrarchus labrax)

Fatira

Papandroulakis

Pavlidis

2013

Fish Physiol Biochem

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European sea bass (Dicentrarchus labrax), one of the most economically important fish in Mediterranean mariculture, shows high basal cortisol concentrations compared with other teleosts. The present study aims (a) to identify cortisol diel variation in fish held under a 12L:12D cycle and minimum handling stress, and (b) to establish the effect of fish size and stressor duration on the cortisol response. The results indicate high intrapopulation variability in plasma cortisol and a significant diel fluctuation with a peak value at dusk (18 h). Stressors of different intensity and/or duration affected the cortisol stress response in a differential manner according to fish size (and/or age). Maximum cortisol values in small-size fish were found at 1 and 2 h post-stress, depending on the duration of the stressor, while at 0.5 h post-stress in large fish regardless stress duration.

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Divergent time course of cortisol response to stress in fish of different ages

Cited by 45 publications

References 20 publications

Effects of anesthesia with the essential oil of Ocimum gratissimum L. in parameters of fish stress

Effects of anesthesia with the essential oil of Ocimum gratissimum L. in parameters of fish stress

Repeated stressors do not provoke habituation or accumulation of the stress response in the catfish Rhamdia quelen

Diel changes in plasma cortisol and effects of size and stress duration on the cortisol response in European sea bass (Dicentrarchus labrax)

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