Arm injury produces long-term behavioral and neural hypersensitivity in octopus

@article{Alupay2014ArmIP,
  title={Arm injury produces long-term behavioral and neural hypersensitivity in octopus},
  author={Jean Alupay and Stavros Hadjisolomou and Robyn J. Crook},
  journal={Neuroscience Letters},
  year={2014},
  volume={558},
  pages={137-142}
}

Figures from this paper

Sense and Insensibility – An Appraisal of the Effects of Clinical Anesthetics on Gastropod and Cephalopod Molluscs as a Step to Improved Welfare of Cephalopods
TLDR
Criteria previously applied to gastropods and vertebrates have proved successful in developing a method for humanely anesthetizing Octopus with clinical doses of isoflurane, i.e., changes in respiratory rate, color pattern and withdrawal responses.
Early-life injury produces lifelong neural hyperexcitability, cognitive deficit and altered defensive behaviour in the squid Euprymna scolopes
TLDR
It is suggested that similar patterns of nervous system and behavioural remodelling that occur in squid and in mammals indicate an adaptive value for long-lasting plasticity arising from early-life injury, and that injuries inflicted in very early life may signal to the nervous system that the environment is highly dangerous.
In Vivo Recording of Neural and Behavioral Correlates of Anesthesia Induction, Reversal, and Euthanasia in Cephalopod Molluscs
TLDR
It is demonstrated for the first time that two of the most commonly used agents in cephalopod general anesthesia, magnesium chloride and ethanol, are capable of producing strong and reversible blockade of afferent and efferent neural signal; thus they are genuine anesthetics, rather than simply sedating agents that render animals immobile but not insensible.
Environmental estrogen exposure disrupts sensory processing and nociceptive plasticity in the cephalopod Euprymna scolopes
TLDR
It is shown that ethinyl estradiol, the most common artificial estrogen found in coastal marine environments, disrupts normal behavioral and neural responses to tissue injury in the sepiolid Euprymna scolopes (Hawaiian bobtail squid), which inhabits shallow tropical waters close to dense human habitation.
Characterizing Neuropathic Pain in the Naked Mole-Rat (Heterocephalus glaber)
TLDR
Hypersensitivity to both mild and strong mechanical stimuli were comparable between naked mole-rats and mice following nerve injury and, unlike mice, naked molerats showed no reaction to mild cold after nerve injury.
Assessing the Potential for Pain in Crustaceans and Other Invertebrates
  • R. Elwood
  • Biology, Psychology
    Animal Welfare
  • 2019
TLDR
Available data go beyond the idea of just nociception, but the impossibility of total proof of pain means they are not definitive, Nevertheless, more humane care for invertebrates is suggested.
Cephalopod Behavior: From Neural Plasticity to Consciousness
TLDR
It is proposed that cephalopods - particularly the octopus - provide a unique test case among invertebrates for examining the properties and conditions that afford a basal faculty of consciousness, and identifies future research directions for the study of consciousness in these tantalizing animals.
Report Nociceptive Sensitization Reduces Predation Risk
TLDR
It is shown that minor injury produces long-term sensitization ofbehav-ioral and neuronal responses in squid, Doryteuthis pealei, and the adaptive value of this sensitization during encounters between squid and a natural fish pred-ator, black sea bass, was tested.
Pain in aquatic animals
  • L. Sneddon
  • Biology, Environmental Science
    The Journal of Experimental Biology
  • 2015
TLDR
How aquatic animals may differ in their neurobiological and behavioural responses to injurious stimuli compared with terrestrial animals is discussed, which has interesting implications for the evolution of pain.
...
...

References

SHOWING 1-10 OF 33 REFERENCES
Squid Have Nociceptors That Display Widespread Long-Term Sensitization and Spontaneous Activity after Bodily Injury
TLDR
It is demonstrated that squid possess nociceptors that selectively encode noxious mechanical but not heat stimuli, and that show long-lasting peripheral sensitization to mechanical stimuli after minor injury to the body.
Peripheral injury induces long-term sensitization of defensive responses to visual and tactile stimuli in the squid Loligo pealeii, Lesueur 1821
TLDR
The results show that long-lasting nociceptive sensitization occurs in cephalopods, and suggest that it may function to reduce predation risk after injury.
Pain and suffering in invertebrates?
TLDR
Criteria that might distinguish nociception from pain are reviewed and an ability to use complex information suggests sufficient cognitive ability for the animal to have a fitness benefit from a pain experience is suggested.
Injury-related behavior and neuronal plasticity: an evolutionary perspective on sensitization, hyperalgesia, and analgesia.
  • E. Walters
  • Biology, Psychology
    International review of neurobiology
  • 1994
Nociceptive behavior and physiology of molluscs: animal welfare implications.
TLDR
It is recommended that investigators attempt to minimize the potential for nociceptor activation and painlike sensations in experimental invertebrates by reducing the number of animals subjected to stressful manipulations and by administering appropriate anesthetic agents whenever practicable, welfare practices similar to those for vertebrate subjects.
To boldly go where no mollusc has gone before: Personality, play, thinking, and consciousness in cephalopods*
TLDR
Different aspects of behavior all indicate cephalopods may have a simple ‘primary consciousness’ (Mather 2007), integrating perception and learned information with motivation to make decisions about complex actions.
Ethogram of Abdopus aculeatus (d'Orbigny, 1834) (Cephalopoda: Octopodidae): can behavioural characters inform octopodid taxomony and systematics?
TLDR
Aspects of the dymantic display, mating system, activity patterns, and habitat use appear similar to those expressed by other members of Abdopus, as well as the large sister taxon Octopus cyanea, suggesting that these behaviours may be conserved throughout the evolution of these octopuses.
Neuromuscular system of the flexible arm of the octopus: physiological characterization.
TLDR
The lack of significant electrical coupling between muscle fibers and the indications for the small size of the motor units suggest that the neuromuscular system of the octopus arm has evolved to ensure a high level of precise localization in the neural control of arm function.
Movement, injuries and growth of members of a natural population of the Pacific pygmy octopus, Octopus digueti
TLDR
Reproduction occurred throughout the year; reproductively competent adults, brooding females and juveniles were present every month; annual temperature oscillations synchronize spring hatching of eggs spawned from winter to early spring, creating a clear spring cohort.
...
...