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Switching strategies: a dolphin’s use of passive and active acoustics to imitate motor actions

Abstract

Scientists have long debated the extent to which animals can imitate. Observations of bottlenose dolphins suggest a sophisticated capacity for social imitation, but little is known about the nature of these abilities. Here, we explore the behavioral mechanisms underlying a dolphin’s ability to copy motor actions while blindfolded (i.e., wearing eyecups). When a dolphin was asked to imitate a dolphin, a human, and then another dolphin blindfolded, his accuracy remained relatively consistent across models. However, his blindfolded echolocation dramatically increased when copying a human as compared to other dolphins, suggesting he actively switched between strategies: recognizing behaviors via characteristic sounds when possible, but via echolocation for the more novel sounding behaviors of the human. Such flexibility in changing perceptual routes demonstrates that the dolphin’s imitation was not automatically elicited, but rather results from an intentional, problem-solving approach to imitation.

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References

  • Abramson JZ, Hernández-Lloreda V, Call J, Colmenares F (2013) Experimental evidence for action imitation in killer whales (Orcinus orca). Anim Cogn 16:11–22

    PubMed  Article  Google Scholar 

  • Bastian J (1967) The transmission of arbitrary environmental information between bottlenosed dolphins. In: Busnel RG (ed) Animal sonar systems, biology and bionics, vol 2. Laboratorie de Physiologie Acoustique, Juoy-en-Josas, France, pp 807–873

    Google Scholar 

  • Bates LA, Byrne RW (2010) Imitation: what animal imitation tells us about animal cognition. WIREs Cogn Sci 1:685–695

    Article  Google Scholar 

  • Bauer GB, Johnson CM (1994) Trained motor imitation by bottlenose dolphins (Tursiops truncatus). Percept Mot Skills 79:1307–1315

    PubMed  Article  CAS  Google Scholar 

  • Boakes RA, Gaertner I (1977) The development of a simple form of communication. Q J Exp Psychol 29:561–575

    Article  Google Scholar 

  • Bromham L, Phillips MJ, Penny D (1999) Growing up with dinosaurs: molecular dates and the mammalian radiation. Trends Ecol Evol 14:113–118

    PubMed  Article  Google Scholar 

  • Byrne RW (1994) The evolution of intelligence. In: Slater PJB, Halliday TR (eds) Behavior and evolution. Cambridge University Press, Cambridge, pp 223–265

    Google Scholar 

  • Byrne RW (2002) Imitation of novel complex actions: what does the evidence from animals mean? Adv Stud Behav 31:77–105

    Article  Google Scholar 

  • Byrne RW, Russon AE (1998) Learning by imitation: a hierarchical approach. Behav Brain Sci 21:667–721

    PubMed  CAS  Google Scholar 

  • Caldwell DK, Caldwell MC (1972) Vocal mimicry in the whistle mode in the Atlantic bottlenose dolphin. Cetology 9:1–8

    Google Scholar 

  • Dawson BV, Foss BM (1965) Observational learning in budgerigars. Anim Behav 13:470–474

    PubMed  Article  CAS  Google Scholar 

  • Galef BG Jr (1988) Imitation in animals: history, definition, and interpretation of data from the psychological laboratory. In: Zentall TR, Galef B (eds) Social learning: psychological and biological perspectives. Lawrence Erlbaum Associates, Hillsdale, pp 3–28

    Google Scholar 

  • Harley HE, DeLong CW (2008) Echoic object recognition by the bottlenose dolphin. Comp Cog Behav Rev 3:46–65

    Google Scholar 

  • Harley HE, Roitblat HL, Nachtigall PE (1996) Object representation in the bottlenose dolphin (Tursiops truncatus): integration of visual and echoic information. J Exp Psychol Anim B 22:164–174

    Article  CAS  Google Scholar 

  • Harley HE, Putman EA, Roitblat HL (2003) Bottlenose dolphins perceive object features through echolocation. Nature 424:667–668

    PubMed  Article  CAS  Google Scholar 

  • Hayes KJ, Hayes C (1952) Imitation in the home-raised chimpanzee. J Comp Physiol Psych 45:450–459

    Article  CAS  Google Scholar 

  • Herman LM (2002) Vocal, social, and self-imitation by bottlenosed dolphins. In: Dautenhahn K, Nehaniv C (eds) Imitation in animals and artifacts. MIT Press, Cambridge, pp 63–108

    Google Scholar 

  • Herman LM, Tavolga WN (1980) The communication systems of cetaceans. In: Herman LM (ed) Cetacean behavior: mechanisms and functions. Wiley-Interscience, New York, pp 149–209

    Google Scholar 

  • Herman LM, Pack AA, Hoffmann-Kuhnt M (1998) Seeing through sound: dolphins (Tursiops truncatus) perceive the spatial structure of objects through echolocation. J Comp Psychol 112:292–305

    PubMed  Article  CAS  Google Scholar 

  • Heyes C (2011) Automatic imitation. Psychol Bull 137:463–483

    PubMed  Article  Google Scholar 

  • Hoppitt W, Laland KN (2008) Social processes influencing learning in animals: a review of the evidence. Adv Stud Behav 38:105–165

    Article  Google Scholar 

  • Hurley S, Chater N (2005) Introduction: the importance of imitation. In: Hurley S, Chater N (eds) Perspectives on imitation: from neuroscience to social science, vol 1. MIT Press, Cambridge, pp 1–52

    Google Scholar 

  • Jaakkola K (2012) Cetacean cognitive specializations. In: Vonk J, Shackleford T (eds) The Oxford handbook of comparative evolutionary psychology. Oxford University Press, New York, pp 144–165

    Google Scholar 

  • Jaakkola K, Guarino E, Rodriguez M (2010a) Blindfolded imitation in a bottlenose dolphin (Tursiops truncatus). Int J Comp Psychol 23:671–688

    Google Scholar 

  • Jaakkola K, Guarino E, Rodriguez M, Erb L, Trone M (2010b) What do dolphins (Tursiops truncatus) understand about hidden objects? Anim Cogn 13:103–120

    PubMed  Article  Google Scholar 

  • Janik VM (2000) Whistle matching in wild bottlenose dolphins (Tursiops truncatus). Science 289:1355–1357

    PubMed  Article  CAS  Google Scholar 

  • Janik VM (2009) Acoustic communication in delphinids. Adv Stud Behav 40:123–157

    Article  Google Scholar 

  • Kuczaj S, Solangi M, Hoffland T, Romagnoli M (2008) Recognition and discrimination of human actions across the senses of echolocation and vision in the bottlenose dolphin: evidence for dolphin cross-modal integration of dynamic information. Int J Comp Psychol 21:84–95

    Google Scholar 

  • Marino L (2002) Convergence of complex cognitive abilities in cetaceans and primates. Brain Behav Evolut 59:21–32

    Article  Google Scholar 

  • Meltzoff AN (1996) The human infant as imitative generalist: a 20-year progress report on infant imitation with implications for comparative psychology. In: Heyes CM, Galef BG Jr (eds) Social learning in animals: the roots of culture. Academic Press, New York, pp 347–370

    Chapter  Google Scholar 

  • Pack AA, Herman LM (1995) Sensory integration in the bottlenosed dolphin: immediate recognition of complex shapes across the senses of echolocation and vision. J Acoust Soc Am 98:722–733

    PubMed  Article  CAS  Google Scholar 

  • Pack AA, Herman LM, Hoffmann-Kuhnt M, Branstetter BK (2002) The object behind the echo: dolphins (Tursiops truncatus) perceive object shape globally through echolocation. Behav Process 58:1–26

    Article  Google Scholar 

  • Reiss D, McCowan B (1993) Spontaneous vocal mimicry and production by bottlenose dolphins (Tursiops truncatus): evidence for vocal learning. J Comp Psychol 107:301–312

    PubMed  Article  CAS  Google Scholar 

  • Richards DG, Wolz JP, Herman LM (1984) Vocal mimicry of computer-generated sounds and vocal labeling of objects by a bottlenosed dolphin, Tursiops truncatus. J Comp Psychol 98:10–28

    PubMed  Article  CAS  Google Scholar 

  • Subiaul F (2010) Dissecting the imitation faculty: the multiple imitation mechanisms (MIM) hypothesis. Behav Process 83:222–234

    Article  Google Scholar 

  • Tayler CK, Saayman GS (1973) Imitative behaviour by Indian Ocean bottlenose dolphins (Tursiops aduncus) in captivity. Behaviour 44:286–298

    Article  Google Scholar 

  • Tomasello M (1999) The cultural origins of human cognition. Harvard University Press, Cambridge

    Google Scholar 

  • Tomasello M, Kruger AC, Ratner H (1993) Cultural learning. Behav Brain Sci 16:495–552

    Article  Google Scholar 

  • Tyack PL (1986) Whistle repertoires of two bottlenosed dolphins, Tursiops truncatus: mimicry of signature whistles? Behav Ecol Sociobiol 18:251–257

    Article  Google Scholar 

  • van Baaren R, Janssen L, Chartrand TL, Dijksterhuis A (2009) Where is the love? The social aspects of mimicry. Philos Trans R Soc B 364:2381–2389

    Article  Google Scholar 

  • Whiten A (2000) Primate culture and social learning. Cogn Sci 24:477–508

    Article  Google Scholar 

  • Whiten A (2001) Imitation and cultural transmission in apes and cetaceans. Behav Brain Sci 24:359–360

    Article  Google Scholar 

  • Whiten A, Ham R (1992) On the nature and evolution of imitation in the animal kingdom: reappraisal of a century of research. Adv Study Behav 21:239–283

    Article  Google Scholar 

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Acknowledgments

We wish to thank Jodi Skjegstad and several DRC research interns for help with data collection and coding. We are also grateful to Francys Subiaul, Heidi Lyn, and Sara Chi for helpful discussions and comments on earlier drafts of this paper. Finally, a special thanks to Tanner, Kibby, AJ, and all the other dolphins and staff at DRC for their cooperation and patience during this project. This research complied with the current laws of the United States of America.

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Correspondence to Kelly Jaakkola.

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Trial showing Tanner imitating a person while blindfolded. (MPG 2283 kb)

Trial showing Tanner imitating a dolphin while blindfolded. (MPG 1811 kb)

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Jaakkola, K., Guarino, E., Rodriguez, M. et al. Switching strategies: a dolphin’s use of passive and active acoustics to imitate motor actions. Anim Cogn 16, 701–709 (2013). https://doi.org/10.1007/s10071-013-0605-3

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  • DOI: https://doi.org/10.1007/s10071-013-0605-3

Keywords

  • Dolphins
  • Imitation
  • Echolocation
  • Response facilitation