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The identification and management of pain, suffering and distress in cephalopods, including anaesthesia, analgesia and humane killing
Andrews, P.L.R.; Darmaillacq, A.-S.; Dennison, N.; Gleadall, I.G.; Hawkins, P.; Messenger, J.B.; Osorio, D.; Smith, V.J.; Smith, J.A. (2013). The identification and management of pain, suffering and distress in cephalopods, including anaesthesia, analgesia and humane killing. J. Exp. Mar. Biol. Ecol. 447: 46-64. https://dx.doi.org/10.1016/j.jembe.2013.02.010
In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Trefwoorden
    Aquaculture > Quality/Health & Welfare
    Book/Review
    Marine Sciences
    Others > Other General
    Policy Makers / Decision Makers
    Scientific Community
    Scientific Publication
    Marien/Kust
Author keywords
    Anaesthesia; Analgesia; Cuttlefish; Nociception; Octopus; Pain

Project Top | Auteurs 
  • Association of European marine biological laboratories, meer

Auteurs  Top 
  • Andrews, P.L.R.
  • Darmaillacq, A.-S.
  • Dennison, N.
  • Gleadall, I.G.
  • Hawkins, P.
  • Messenger, J.B.
  • Osorio, D.
  • Smith, V.J.
  • Smith, J.A.

Abstract
    From January 2013 scientific projects involving cephalopods became regulated by Directive 2010/63/EU, but at present there is little guidance specifically for cephalopods on a number Of key requirements of the Directive, including: recognition of pain, suffering and distress and implementation of humane end-points; anaesthesia and analgesia, and humane killing. This paper critically reviews these key areas prior to the development of guidelines and makes recommendations, including identifying topics for further research. In particular: a) Evidence on how cephalopods might experience pain is reviewed; and a draft scheme of behavioural and physiological criteria for recognising and assessing pain, suffering and distress in cephalopods used in scientific procedures is presented and discussed. b) Agents and protocols currently used for general anaesthesia and analgesia are evaluated. Magnesium chloride, ethanol and clove oil are the most frequently used agents, but their efficacy and potential for induction of aversion need to be systematically investigated, according to the species of cephalopod and factors such as body weight, sex and water temperature. Means of sedating animals prior to anaesthesia should be investigated. Criteria for assessing depth of anaesthesia, including depression of ventilation, decrease in chromatophore tone (paling), reduced arm activity, tone and sucker adhesiveness, loss of normal posture and righting reflex, and loss of response to a noxious stimulus, are discussed. c) Analgesia should be provided for cephalopods used in scientific procedures, whenever this would be the case for vertebrates. However, research is needed to evaluate effective agents and administration routes for cephalopods. d) Techniques for local anaesthesia need to be defined and evaluated. e) Currently used methods of killing and criteria for confirmation of death in cephalopods are evaluated. Based on present knowledge, a protocol for humane killing of cephalopods is proposed. However, further evaluation is needed, along with development of humane methods of killing that will not compromise study of the brain. On humane grounds: L mechanical (as opposed to chemical) methods of killing should not be used on conscious cephalopods (unless specifically authorised by the national competent authority); and it hatchlings and larvae should be killed by overdose of anaesthetic and not by immersion in tissue fixative. Key gaps in current knowledge are also highlighted, so as to encourage research that will contribute to the evidence base needed to develop guidelines to the Directive.

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