Tailfin clipping, a painful procedure: Studies on Nile tilapia and common carp

Roques, J.A.C.; Abbink, W.; Geurds, F.; Vis, J.W. van de; Flik, G.

doi:10.1016/j.physbeh.2010.08.001

Cited by 79 publications

(75 citation statements)

References 25 publications

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“…From the spinal cord, information may then be transmitted to the brain where specific areas process it, leading to various behavioural and physiological responses (Braithwaite & Ebbesson, 2014). Studies with some fish species show that they have a nociceptive system very similar to the nociceptive systems of mammals and birds (Roques, Abbink, Geurds, Vis, & Flik, 2010;Sneddon et al, 2003;Sneddon, 2003) The CONCEA does not say much about fish sentience, but foreshadows two fascicles in the 'Guia brasileiro de produção, manutenção ou utilização de animais em atividades de ensino ou pesquisa científica' (Brazilian guide of production, care and use of animals in teaching or scientific research activities) dedicated to them. The first fascicle has been published and broaches the most commonly used species for research or teaching purposes: lambari (Astyanax fasciatus and A. altiparanae), tilapia (Tilapia rendalli and Oreochromis niloticus) and zebrafish (Danio rerio).…”

Section: Resultsmentioning

confidence: 99%

<b>Fish welfare: the state of science by scientometrical analysis

Ghisi

Oliveira

2016

Acta Sci. Biol. Sci.

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ABSTRACT. In 2014, Brazil produced 474.33 thousand tons of captive-bred fish. In addition, regulatory agencies of animal ethics and welfare have recently encouraged experiments to be done using simpler vertebrates, such as fish. The aim of this article was to perform a scientometric analysis of scientific production that deals with fish welfare, in an attempt to find trends and gaps in this line of research. Our analyses showed a growing concern about fish welfare, although several questions remained inadequately covered. The most studied species was the Atlantic salmon, with Norway having the most publications on this theme. There are controversies among scientists about fish capacity for suffering and enjoyment (sentience). As regards slaughter or euthanasia, some studies showed that some methods are more endorsed than others, because they effectively reduce suffering and improve the appearance of the meat. In respect of animals used for experimentation, the most recommended substances were benzocaine and MS222. Thus, despite the importance of this subject, few studies are decisive and there is still no consensus on how to improve fish welfare or even on how to reduce suffering at the moment of slaughter.Keywords: suffering, pain, euthanasia, stress, humane slaughter.Bem-estar em peixes: o status da ciência por meio de análise cienciométrica RESUMO. Em 2014, o Brasil produziu 474,33 mil toneladas de peixes em cativeiro. Além disto, há um recente incentivo dos órgãos reguladores da ética e do bem-estar animal para que experimentos sejam feitos com vertebrados mais simples, tais como peixes. O objetivo do presente trabalho foi realizar uma análise cienciométrica da produção científica que trata do bem-estar de peixes e se preocupa com eles, em uma tentativa de encontrar tendências e lacunas nessa linha de pesquisa. Nossas análises mostraram uma crescente preocupação com o bem-estar em peixes, apesar de várias questões continuarem deficientes. A espécie mais utilizada nos estudos foi o salmão do Atlântico, e o país com mais publicações nessa temática foi a Noruega. Percebe-se que existem controvérsias entre cientistas quanto à capacidade de sofrimento desses animais, a senciência. Quanto ao abate ou à eutanásia, estudos mostraram que alguns métodos são mais aconselháveis que outros, pois efetivamente irão reduzir o sofrimento e melhorar a apresentação da carne. Para animais de experimentação, as substâncias mais recomendadas foram a benzocaína e o MS222. Assim, apesar da importância do tema, poucos estudos são definitivos, inexistindo ainda consenso sobre os métodos de melhoria do bem-estar em peixes e sobre como reduzir o sofrimento no momento do abate.Palavras-chave: sofrimento, dor, eutanásia, estresse, abate humanitário.

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Section: Resultsmentioning

confidence: 99%

<b>Fish welfare: the state of science by scientometrical analysis

Ghisi

Oliveira

2016

Acta Sci. Biol. Sci.

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“…Recent investigations have demonstrated that teleost fish have nociceptors, receptors that detect potentially painful stimuli, which are very similar to those found in mammals (Ashley et al, 2007;Roques et al, 2010;Sneddon, 2002). A variety of species also exhibit adverse behavioural and physiological responses to a potentially painful event (Dunlop and Laming, 2005;Reilly et al, 2008).…”

Section: Introductionmentioning

confidence: 87%

Reduction in activity by noxious chemical stimulation is ameliorated by immersion in analgesic drugs in zebrafish

López-Luna

Al-Jubouri

Al-Nuaimy

et al. 2017

Journal of Experimental Biology

105

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Research has recently demonstrated that larval zebrafish show similar molecular responses to nociception to those of adults. Our study explored whether unprotected larval zebrafish exhibited altered behaviour after exposure to noxious chemicals and screened a range of analgesic drugs to determine their efficacy to reduce these responses. This approach aimed to validate larval zebrafish as a reliable replacement for adults as well as providing a high-throughput means of analysing behavioural responses. Zebrafish at 5 days postfertilization were exposed to known noxious stimuli: acetic acid (0.01%, 0.1% and 0.25%) and citric acid (0.1%, 1% and 5%). The behavioural response of each was recorded and analysed using novel tracking software that measures time spent active in 25 larvae at one time. Subsequently, the efficacy of aspirin, lidocaine, morphine and flunixin as analgesics after exposure to 0.1% acetic acid was tested. Larvae exposed to 0.1% and 0.25% acetic acid spent less time active, whereas those exposed to 0.01% acetic acid and 0.1-5% citric acid showed an increase in swimming activity. Administration of 2.5 mg l −1 aspirin, 5 mg l −1 lidocaine and 48 mg l −1 morphine prevented the behavioural changes induced by acetic acid. These results suggest that larvae respond to a noxious challenge in a similar way to adult zebrafish and other vertebrates and that the effect of nociception on activity can be ameliorated by using analgesics. Therefore, adopting larval zebrafish could represent a direct replacement of a protected adult fish with a non-protected form in pain-and nociception-related research.

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“…It would be interesting to test a tropical species of fish, as they would not have evolved to tolerate such extremes of cold. Anatomical and electrophysiological studies have found that a small proportion of fish nociceptors are innervated by C fibres (4-5%; Sneddon, 2002;Roques et al, 2010), in contrast to terrestrial vertebrates where some 50% of nociceptors are C fibres (Young, 1977), although reptiles have much fewer C fibres (Terashima and Liang, 1994). C fibres in mammals contribute to dull, 'thudding' pain whereas the faster conducting A-delta fibres are believed to signal 'first' pain to the CNS.…”

Section: Pain In Fishmentioning

confidence: 99%

“…Buoyancy of fish in water means less damage due to gravity (falling), noxious chemicals may be more diluted in aquatic water bodies and changes in temperature are less dramatic compared with terrestrial environments; thus, pain from gravity, extremes of temperature and noxious chemicals may be experienced to a greater degree by terrestrial animals. This is just a hypothesis, but irrespective of this the trout electrophysiological studies show clearly that trout A-delta fibres act in the same way as mammalian C fibres, reacting to a variety of noxious stimuli, and many are polymodal nociceptors (Sneddon, 2002(Sneddon, , 2003aAshley et al, 2006Ashley et al, , 2007Roques et al, 2010;Mettam et al, 2012).…”

Section: Pain In Fishmentioning

confidence: 99%

Pain in aquatic animals

Sneddon

2015

Journal of Experimental Biology

175

102

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Recent developments in the study of pain in animals have demonstrated the potential for pain perception in a variety of wholly aquatic species such as molluscs, crustaceans and fish. This allows us to gain insight into how the ecological pressures and differential life history of living in a watery medium can yield novel data that inform the comparative physiology and evolution of pain. Nociception is the simple detection of potentially painful stimuli usually accompanied by a reflex withdrawal response, and nociceptors have been found in aquatic invertebrates such as the sea slug Aplysia. It would seem adaptive to have a warning system that allows animals to avoid lifethreatening injury, yet debate does still continue over the capacity for non-mammalian species to experience the discomfort or suffering that is a key component of pain rather than a nociceptive reflex. Contemporary studies over the last 10 years have demonstrated that bony fish possess nociceptors that are similar to those in mammals; that they demonstrate pain-related changes in physiology and behaviour that are reduced by painkillers; that they exhibit higher brain activity when painfully stimulated; and that pain is more important than showing fear or anti-predator behaviour in bony fish. The neurophysiological basis of nociception or pain in fish is demonstrably similar to that in mammals. Pain perception in invertebrates is more controversial as they lack the vertebrate brain, yet recent research evidence confirms that there are behavioural changes in response to potentially painful events. This review will assess the field of pain perception in aquatic species, focusing on fish and selected invertebrate groups to interpret how research findings can inform our understanding of the physiology and evolution of pain. Further, if we accept these animals may be capable of experiencing the negative experience of pain, then the wider implications of human use of these animals should be considered.

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Tailfin clipping, a painful procedure: Studies on Nile tilapia and common carp

Cited by 79 publications

References 25 publications

<b>Fish welfare: the state of science by scientometrical analysis

<b>Fish welfare: the state of science by scientometrical analysis

Reduction in activity by noxious chemical stimulation is ameliorated by immersion in analgesic drugs in zebrafish

Pain in aquatic animals

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