Cortisol and haematological response in sea bream and trout subjected to the anaesthetics clove oil and 2-phenoxyethanol

Tort, L.; Puigcerver, M.; Crespo, Sonia Pereira; Padrós, Francesc

doi:10.1046/j.1365-2109.2002.00741.x

Cited by 102 publications

(78 citation statements)

References 11 publications

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“…O efeito de anestésicos como redutores de estresse em peixes durante o manejo algumas vezes é contraditório, pois reações aos próprios anestésicos têm também sido observadas em peixes expostos a tricaína metano sulfonato (MS 222), óleo de cravo, metomidato, benzocaína, gás carbônico e fenoxietanol (Ivervsen et al 2003;Pirhonen e Schreck 2003;Wagner et al 2003;Tort et al 2002). Os procedimentos experimentais aplicados neste trabalho tiveram o objetivo de simular as condições em que anestésicos são utilizados no campo.…”

Section: Discussõesunclassified

Avaliação de respostas metabólicas do tambaqui exposto ao eugenol em banhos anestésicos

et al. 2011

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ResumoO tambaqui é a principal espécie de peixe cultivado na Amazônia Ocidental. Porém durante o processo produtivo, práticas de manejo são necessárias para o monitoramento do crescimento e estado geral da sanidade dos animais. Para isso os animais devem ser anestesiados para maior segurança no trabalho. O eugenol, componente majoritário do óleo de cravo, tem sido bastante utilizado como anestésico alternativo para peixes por ser um produto natural e de baixo custo. Entretanto, estudos tratando de respostas metabólicas em peixes tropicais expostos a diferentes anestésicos são ainda necessários. Dentro desse intuito, o presente trabalho avaliou respostas metabólicas, detectadas por meio de alterações de parâmetros sanguíneos e plasmáticos do tambaqui, exposto ao eugenol em banhos anestésicos simulados. Respostas típicas ao estresse foram detectadas devido ao manuseio imposto aos peixes durante a realização dos banhos anestésicos. O eugenol não reduziu totalmente essas reações ao estresse. Por outro lado, esse anestésico não provocou estresse adicional em exposições curtas de 15 min em concentrações próximas a 20 mg L -1 . PalavRas-Chave: Colossoma macropomum, respostas fisiológicas, hematologia. Evaluation of tambaqui metabolic responses to eugenol in anesthetics bathsabstRaCt Tambaqui is the main farmed fish in the Western Amazon. However, in handling this fish has to be anesthetized for safety purposes, usually when evaluating growth and health conditions. Eugenol, the main component of clove oil, has been reported as an alternative fish anesthetic, because it is an inexpensive natural product. However, continued studies are necessary about the metabolic responses of tropical fish to anesthetics. The present work evaluated metabolic responses of tambaqui to eugenol in simulated anesthetic baths, measuring blood and plasma parameters. Typical metabolic stress responses to handling were detected, but they were not totally reduced by eugenol. On the other hand, the anesthetic dissolved in water did not provoke any extra charge of stress during short-term exposures in concentrations of about 20mg L -1 for 15 min.

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Section: Discussõesunclassified

Avaliação de respostas metabólicas do tambaqui exposto ao eugenol em banhos anestésicos

et al. 2011

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“…Clove oil is approved for use in aquaculture facilities in Australia, New Zealand, and other Oceania countries with no withdrawal period for human consumption and release of the fishes in the environment (Kildea et al, 2004). However, in North America the FDA does not approve the use of clove oil for aquaculture purposes (Sladky et al, 2001) Researchers have investigated the effects of clove oil in fishes (Soto & Burhanuddin, 1995;Keene et al, 1998;Cho & Heath, 2000;Sladky et al, 2001;Tort et al, 2002;Woody et al, 2002;Small, 2004). A study demonstrating the efficacy of clove oil in matrinxã (Inoue et al, 2003), but this work only determined the induction and recovery times to anesthesia.…”

Section: Effects Of Clove Oil On the Stress Response Of Matrinxã (Brymentioning

confidence: 99%

Effects of clove oil on the stress response of matrinxã (Brycon cephalus) subjected to transport

Inoue

Afonso

Iwama³

et al. 2005

Acta Amaz.

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Fish transport is one of the most stressful procedures in aquaculture facilities. The present work evaluated the stress response of matrinxã to transportation procedures, and the use of clove oil as an alternative to reduce the stress response to transport in matrinxã (Brycon cephalus). Clove oil solutions were tested in concentrations of 0, 1, 5 and 10 mg/L during matrinxã transportation in plastic bags, supplied with water and oxygen as the usual field procedures in Brazil. Clove oil reduced some of the physiological stress responses (plasma cortisol, glucose and ions) that we measured. The high energetic cost to matrinxã cope with the transport stress was clear by the decrease of liver glycogen after transport. Our results suggest that clove oil (5 mg/l) can mitigate the stress response in matrinxã subjected to transport. KEY WORDSmatrinxã Brycon cephalus, transport, stress, clove oil.Efeito do óleo de cravo na resposta de estresse do matrinxã (Brycon cephalus) submetido ao transporte. RESUMO O transporte de peixes vivos é certamente um dos principais estímulos adversos à homeostase dos peixes nas condições de criação em cativeiro. O presente trabalho mensurou o estresse do matrinxã (Brycon PALAVRAS-CHAVEmatrinxã Brycon cephalus, transporte, estresse, óleo de cravo.

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“…The physiological stress response of fish anesthetized in MS-222 or clove oil solution has ranged from minimal to significant, largely depending on the duration of time fish are in the anesthetic, the specific anesthetic and dose, when the dose was delivered, and the species of study (Barton and Peter, 1982;Tort et al, 2002;Wagner et al, 2002). It should be recognized that some of the variation observed in physiological parameters measured when fish are under anesthesia following a stress event may be partially due to differences in anesthetization times, which can contribute to variation in sampling times and ultimately physiological changes.…”

Section: Effects Of Anesthesiamentioning

confidence: 99%

Physiological response of wild rainbow trout to angling: impact of angling duration, fish size, body condition, and temperature

2005

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This study evaluated the immediate physiological response of wild rainbow trout to catch-and-release angling in the Alagnak River, southwest Alaska. Information was recorded on individual rainbow trout (n = 415) captured by angling including landing time and the time required to remove hooks (angling duration), the time to anesthetize fish in clove oil and withdraw blood, fish length and weight, and water temperature at capture locations. Plasma cortisol, glucose, ions (sodium, potassium, chloride), and lactate were analyzed to determine the effects of angling duration, fish size, body condition, and temperature. Levels of plasma ions did not change significantly during the observed physiological response and levels of plasma glucose were sometimes influenced by length (2000, 2001), body condition (2001), or temperature (2001). Levels of plasma cortisol and lactate in extended capture fish (angling duration greater than 2 min) were significantly higher than levels in rapid capture fish (angling duration less than 2 min). Rapid capture fish were significantly smaller than extended capture fish, reflecting that fish size influenced landing and handling times. Fish size was related to cortisol and lactate in 2002, which corresponded to the year when larger fish were captured and there were longer landing times. Body condition (i.e., weight/length regression residuals index), was significantly related to lactate in 2000 and 2001. Water temperatures were higher in 2001 (mean temperature ± S.E., 13 ± 2 • C) than in 2002 (10 ± 2 • C), and fish captured in 2001 had significantly higher cortisol and lactate concentrations than fish captured in 2002. The pattern of increase in plasma cortisol and lactate was due to the amount of time fish were angled, and the upper limit of the response was due to water temperature. The results of this study indicate the importance of minimizing the duration of angling in order to reduce the sublethal physiological disturbances in wild fish subjected to catch-and-release angling, particularly during warmer water temperatures. It is also important to note that factors such as fish size may influence both the duration of angling and subsequent physiological response.

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Cortisol and haematological response in sea bream and trout subjected to the anaesthetics clove oil and 2-phenoxyethanol

Cited by 102 publications

References 11 publications

Avaliação de respostas metabólicas do tambaqui exposto ao eugenol em banhos anestésicos

Avaliação de respostas metabólicas do tambaqui exposto ao eugenol em banhos anestésicos

Effects of clove oil on the stress response of matrinxã (Brycon cephalus) subjected to transport

Physiological response of wild rainbow trout to angling: impact of angling duration, fish size, body condition, and temperature

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