Stress-related physiological responses to handling in common dentex (Dentex dentex Linnaeus, 1758)

Morales, Amalia E.; Cardenete, G.; Abellán, E.; Garcia-Rejon, L.

doi:10.1111/j.1365-2109.2004.01180.x

Cited by 61 publications

(41 citation statements)

References 43 publications

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“…The present data support the studies where it is clear that these haematological indicators of secondary stress response are mainly displayed in chronic stress situations [24]. It has been shown that high stocking density, considered as an aquaculture-related chronic stressor [43] produce on juveniles of gilthead seabream, haemoconcentration, as a strategy for increasing oxygen carrying capacity of blood during periods of high energy demand [51][52][53].…”

Section: Discussionsupporting

confidence: 74%

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Haematological and Immunological Responses in Juvenile Sea Bass (Dicentrarchus labrax L.) After Short-Term Acute Stress

Maricchiolo¹,

Caruso²,

Genovese³

2008

TOFISHSJ

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Abstract:The physiological effects of acute stress (induced by an intraperitoneal injection) on the haematocrit, haemoglobin, serum cortisol and glucose, haemagglutinins and lysozyme were investigated in juvenile sea bass Dicentrarchus labrax. A total of 40 fish were subjected to an intraperitoneal injection. Eight fish were sampled at 0, 2, 4, 24 and 48 h after acute stress and compared to unstressed fish (controls) sacrificed at the same times. Intraperitoneal injection resulted in significant changes in cortisol and glucose 4 and 2 hours after exposure to stress, respectively, but not in haematocrit and haemoglobin levels. No significant differences between stressed and control fish were recorded for lysozyme content and haemagglutinating activity throughout the experiment. In juvenile sea bass acute stress caused by intraperitoneal injection was mostly associated with the increase in common stress indicators (cortisol and glucose), while no clear response in terms of non-specific immune parameters was evidenced.

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Section: Discussionsupporting

confidence: 74%

“…Most research on the acute stress has been focused on handling [6,19,23,24] and capture [25][26][27][28] but no information is available on physiological effects of vaccination.…”

Section: Introductionmentioning

confidence: 99%

Haematological and Immunological Responses in Juvenile Sea Bass (Dicentrarchus labrax L.) After Short-Term Acute Stress

Maricchiolo¹,

Caruso²,

Genovese³

2008

TOFISHSJ

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“…the chasing and swimming of fish, physical injury provoked by the contact among fish and with the net and anoxia by air exposure (Mugnier et al, 1998;Arends et al, 1999;Ross and Ross, 1999;Barcellos et al, 2001;Morales et al, 2005). Confirming the literature regarding fish stress, elevated circulating cortisol and glucose of pacu were short-term responses in both air-exposed fish after capture and the recovery occurred within 24 hours.…”

Section: Discussionsupporting

confidence: 69%

“…Various stressors, including fish capture (Mugnier et al, 1998;Arends et al, 1999;Barcellos et al, 2001;Rocha et al, 2004;Morales et al, 2005), are necessary components of modern intensive aquaculture (Wendelaar Bonga, 1997). The fish response to such stressors involves a series of physiological changes in an attempt to compensate for the challenge imposed upon it and, thereby cope with the stress.…”

Section: Introductionmentioning

confidence: 99%

Biological indicators of stress in pacu (Piaractus mesopotamicus) after capture

et al. 2009

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The effects of capture (chasing, netting and air exposure) on cortisol, glucose, chloride, sodium, potassium and calcium concentrations, osmolality, hematocrit, hemoglobin concentration, red blood cells count (RBC) and mean corpuscular volume (MCV) were investigated in pacu (Piaractus mesopotamicus). A total of 132 fish (49.7 ± 11.7 g) were subjected to capture and 3 minutes air exposure and capture and 5 minutes air exposure. Nine fish at each treatment were sampled at 5, 15, 30, 60 minutes and 24 hours after the procedure. Nine undisturbed fish were sacrificed before the handling and used as controls. Capture resulted in a rise in blood cortisol and glucose 30 and 5 minutes, respectively, after both air exposures. Both indicators returned to resting levels 24 hours after capture. In both fish groups, plasma chloride decreased 60 minutes after capture, not recovering the resting levels within 24 hours after, and serum sodium rose at 15 and 30 minutes and recovered the resting levels 24 hours later. There were no significant changes neither in potassium, calcium and osmolality nor in hematocrit, hemoglobin, RBC and MCV as a consequence of capture. The sequential stressors imposed to pacu during capture activated the brain-pituitary-interrenal axis (cortisol and glucose responses) but the activation of the brain-sympathetic-chromaffin cell axis was apparently moderate (ionic and hematological responses).Keywords: capture, air exposure, stress, Piaractus mesopotamicus. Indicadores biológicos de estresse em pacu (Piaractus mesopotamicus) após captura ResumoOs efeitos da captura (perseguição, contenção em puçá e exposição aérea) no perfil sanguíneo do cortisol, glicose, cloreto, sódio, potássio, cálcio e na osmolaridade, hematócrito, hemoglobina, número de células vermelhas (CV) e volume corpuscular médio (VCM) foram investigados no pacu (Piaractus mesopotamicus). Um total de 132 peixes (49,7 ± 11,7 g) foi submetido à captura com 3 ou 5 minutos de exposição aérea. Nove peixes de cada tratamento foram amostrados 5, 15, 30, 60 minutos e 24 horas depois e outros nove peixes foram amostrados antes da captura e considerados controle. A captura resultou em aumento do cortisol e glicose no sangue 30 e 5 minutos depois da captura, respectivamente, independente do tempo de exposição aérea. Ambos os indicadores recuperaram os valores controle em 24 horas. Nos dois grupos de peixes, o cloreto plasmático diminuiu 60 minutos após captura e não recuperou os valores controle, enquanto o sódio sérico aumentou entre 15 e 30 minutos recuperando a condição controle em 24 horas. Não houve alteração significativa nos valores de potássio, cálcio, osmolaridade ou no hematócrito, hemoglobina, CV e VCM como consequência da captura. Os estressores sequenciais aplicados no pacu durante a captura ativaram o eixo cérebro-pituitária-interrenal (respostas do cortisol e glicose), mas a ativação do eixo cérebro-sistema simpático-células cromafins foi aparentemente moderada (respostas iônicas e hematológicas).Palavras-chave: captura, exposiç...

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“…O mesmo resultado foi obtido com os peixes-controle. De acordo com Morales et al (2005), mudanças nas respostas hematológicas de estresse, como o hematócrito, normalmente não são observadas em exposições agudas, sendo mais responsivo em exposições crônicas. Figura 3.…”

Section: Resultsunclassified

Eficácia do mentol como anestésico para juvenis de tilápia-do-nilo (Oreochromis niloticus)

Simões

Gomes

2009

Arq. Bras. Med. Vet. Zootec.

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Stress-related physiological responses to handling in common dentex (Dentex dentex Linnaeus, 1758)

Cited by 61 publications

References 43 publications

Haematological and Immunological Responses in Juvenile Sea Bass (Dicentrarchus labrax L.) After Short-Term Acute Stress

Haematological and Immunological Responses in Juvenile Sea Bass (Dicentrarchus labrax L.) After Short-Term Acute Stress

Biological indicators of stress in pacu (Piaractus mesopotamicus) after capture

Eficácia do mentol como anestésico para juvenis de tilápia-do-nilo (Oreochromis niloticus)

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