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Octopuses (Enteroctopus dofleini) recognize individual humans
Anderson, R.C.; Mather, J.A.; Monette, M.Q.; Zimsen, S.R.M. (2010). Octopuses (Enteroctopus dofleini) recognize individual humans. Journal of Applied Animal Welfare Science 13(3): 261-272. dx.doi.org/10.1080/10888705.2010.483892
In: Journal of Applied Animal Welfare Science: Abingdon. ISSN 1088-8705, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Anderson, R.C.
  • Mather, J.A.
  • Monette, M.Q.
  • Zimsen, S.R.M.

Abstract
    This study exposed 8 Enteroctopus dofleini separately to 2 unfamiliar individual humans over a 2-week period under differing circumstances. One person consistently fed the octopuses and the other touched them with a bristly stick. Each human recorded octopus body patterns, behaviors, and respiration rates directly after each treatment. At the end of 2 weeks, a body pattern (a dark Eyebar) and 2 behaviors (reaching arms toward or away from the tester and funnel direction) were significantly different in response to the 2 humans. The respiration rate of the 4 larger octopuses changed significantly in response to the 2 treatments; however, there was no significant difference in the 4 smaller octopuses' respiration. Octopuses' ability to recognize humans enlarges our knowledge of the perceptual ability of this nonhuman animal, which depends heavily on learning in response to visual information. Any training paradigm should take such individual recognition into consideration as it could significantly alter the octopuses' responses.

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