Journal of Ethology

, Volume 29, Issue 2, pp 309–320 | Cite as

Vocal exchanges of signature whistles in bottlenose dolphins (Tursiops truncatus)

Article

Abstract

Bottlenose dolphins (Tursiops truncatus) produce individually distinctive vocalizations—referred to as “signature whistles”—that are thought to function as an individual and conspecific recognition system for maintenance of consistent contact between individuals. Observations and playback experiments were conducted at aquariums to study these whistle–vocal exchanges in bottlenose dolphins. Temporal patterns of vocalization were examined by analyzing the intercall intervals between two consecutive whistles. When a second individual produced a call that was different from the first individual’s vocalization, most of these calls were shorter than 1 s. However, when two consecutive calls were produced by the same individual, the second call rarely occurred within 1 s of the first. These results suggest that a second whistle may be produced by a different caller in response to the first whistle; however, in the case of an absence of a response, the first caller is likely to give further whistles. The results of this acoustic analysis show that the dolphins used in this study mostly used signature whistles during the recorded vocal exchanges.

Keywords

Vocal exchange Bottlenose dolphin Tursiops truncatus Contact call Vocal communication 

References

  1. Altmann J (1974) Observational study of behaviour: sampling methods. Behaviour 49:227–267PubMedCrossRefGoogle Scholar
  2. Caldwell MC, Caldwell DK (1965) Individualized whistle contours in bottlenosed dolphins (Tursiops truncatus). Nature 207:434–435CrossRefGoogle Scholar
  3. Caldwell MC, Caldwell DK (1968) Vocalization of naive captive dolphins in small groups. Science 159:1121–1123PubMedCrossRefGoogle Scholar
  4. Caldwell MC, Caldwell DK, Tyack PL (1990) Review of the signature-whistle hypothesis for the Atlantic bottlenose dolphin. In: Leatherwood S, Reeves RR (eds) The bottlenose dolphin. Academic, New York, pp 199–233Google Scholar
  5. Charif RA, Mitchell S, Clark CW (1995) Canary 1.2 user’s manual. Cornell Laboratory of Ornithology, New YorkGoogle Scholar
  6. Connor RC, Wells RS, Mann J, Read RW (2000) The bottlenose dolphin: social relationships in a fission–fusion society. In: Mann J, Connor RC, Tyack PL, Whitehead H (eds) Cetacean societies: field studies of dolphins and whales. University of Chicago Press, Chicago, pp 91–126Google Scholar
  7. Cook MLH, Sayigh LS, Blum JE, Wells RS (2004) Signature-whistle production in undisturbed free-ranging bottlenose dolphins (Tursiops truncatus). Proc R Soc Lond B 271:1043–1049CrossRefGoogle Scholar
  8. Harley HE (2008) Whistle discrimination and categorization by the Atlantic bottlenose dolphin (Tursiops truncatus): a review of the signature whistle framework and a perceptual test. J Exp Psychol Anim Behav Process 77:243–268Google Scholar
  9. Herzing DL (1996) Vocalizations and associated underwater behavior of free-ranging Atlantic spotted dolphins, Stenella frontalis, and bottlenose dolphins, Tursiops truncatus. Aquat Mamm 22:61–79Google Scholar
  10. Itani J (1963) Vocal communication of the wild Japanese monkey. Primates 4:11–66CrossRefGoogle Scholar
  11. Janik VM (1999) Pitfalls in categorization of behaviour: a comparison of dolphin whistle classification methods. Anim Behav 57:133–143PubMedCrossRefGoogle Scholar
  12. Janik VM (2000a) Whistle matching in wild bottlenose dolphins (Tursiops truncatus). Science 289:1355–1357PubMedCrossRefGoogle Scholar
  13. Janik VM (2000b) Source levels and the estimated active space of bottlenose dolphin (Tursiops truncatus) whistles in the Moray Firth, Scotland. J Comp Physiol A 186:673–680PubMedCrossRefGoogle Scholar
  14. Janik VM, Slater PJB (1998) Context-specific use suggests that bottlenose dolphin signature whistles are cohesion calls. Anim Behav 56:829–838PubMedCrossRefGoogle Scholar
  15. Janik VM, Dehnhardt G, Todt D (1994) Signature whistle variations in a bottlenose dolphin, Tursiops truncatus. Behav Ecol Sociobiol 35:243–248CrossRefGoogle Scholar
  16. Janik VM, Sayigh LS, Wells RS (2006) Signature whistle shape conveys identity information to bottlenose dolphins. Proc Natl Acad Sci USA 103:8293–8297PubMedCrossRefGoogle Scholar
  17. Koda H (2008) Short-term acoustic modifications during dynamic vocal interactions nonhuman primates: implications for origins of motherese. In: Msataka N (ed) The origins of language: unraveling evolutionary forces. Springer, Tokyo, pp 59–73Google Scholar
  18. Kureta Y (2000) Vocal exchanges between familiar cotton-top tamarins during social isolation. Jpn J Anim Psychol 50:95–102Google Scholar
  19. Lang TG, Smith HAP (1965) Communication between dolphins in separate tanks by way of an electronic acoustic link. Science 150:1839–1844PubMedCrossRefGoogle Scholar
  20. Lilly JC, Miller AM (1961) Vocal exchanges between dolphins. Science 134:1873–1876PubMedCrossRefGoogle Scholar
  21. Masataka N (1982) A field study on the vocalizations of Goeldi’s monkeys (Callimico goeldii). Primates 23:206–219CrossRefGoogle Scholar
  22. Masataka N, Biben M (1987) Temporal rules regulating affiliative vocal exchanges of squirrel monkeys. Behaviour 101:311–319CrossRefGoogle Scholar
  23. McCowan B, Reiss D (1995) Quantitative comparison of whistle repertoires from captive adult bottlenose dolphins (Delphinidae, Tursiops truncatus): a re-evaluation of the signature whistle hypothesis. Ethology 100:194–209CrossRefGoogle Scholar
  24. McCowan B, Reiss D (2001) The fallacy of ‘signature whistles’ in bottlenose dolphins: a comparative perspective of ‘signature information’ in animal vocalizations. Anim Behav 62:1151–1162CrossRefGoogle Scholar
  25. Moody M, Menzel EW (1976) Vocalizations and their behavioral context in the tamarin Saguinus fuscicollis. Folia Primatol 25:73–94PubMedCrossRefGoogle Scholar
  26. Norris KS, Dohl TP (1980) The structure and functions of cetacean schools. In: Herman LM (ed) Cetacean behavior: mechanisms and functions. Wiley, New York, pp 211–261Google Scholar
  27. Oda R (1996) Effects of contextual and social variables on contact call production in free-ranging ringtailed lemurs (Lemur catta). Int J Primatol 17:191–205CrossRefGoogle Scholar
  28. Okayasu N (1987) Coo sound communication. Quat Anthropol 19:12–30Google Scholar
  29. Sayigh LS, Janik VM (2009) Signature whistles. In: Perrin WF, Würsig B, Thewissen JGM (eds) Encyclopedia of marine mammals, 2nd edn. Academic, San Diego, pp 1014–1016Google Scholar
  30. Sayigh LS, Tyack PL, Wells RS, Scott MD (1990) Signature whistles of free-ranging bottlenose dolphins Tursiops truncatus: stability and mother–offspring comparisons. Behav Ecol Sociobiol 26:247–260CrossRefGoogle Scholar
  31. Sayigh LS, Tyack PL, Wells RS, Scott MD, Irvine AB (1995) Sex difference in signature whistle production of free-ranging bottlenose dolphins, Tursiops truncatus. Behav Ecol Sociobiol 36:171–177CrossRefGoogle Scholar
  32. Sayigh LS, Tyack PL, Wells RS, Solow AR, Scott MD, Irvine AB (1998) Individual recognition in wild bottlenose dolphins: a field test using playback experiments. Anim Behav 57:41–50CrossRefGoogle Scholar
  33. Sayigh LS, Esch HC, Wells RS, Janik VM (2007) Facts about signature whistles of bottlenose dolphins, Tursiops truncatus. Anim Behav 74:1631–1642CrossRefGoogle Scholar
  34. Shane SH, Wells RS, Würsig B (1986) Ecology, behavior and social organization of the bottlenose dolphin: a review. Mar Mamm Sci 2:34–63CrossRefGoogle Scholar
  35. Smolker RA, Richards AF, Connor RC, Pepper JW (1992) Sex differences in patterns of association among Indian Ocean bottlenose dolphins. Behaviour 123:38–69CrossRefGoogle Scholar
  36. Smolker RA, Mann J, Smuts BB (1993) Use of signature whistles during separations and reunions by wild bottlenose dolphin mothers and infants. Behav Ecol Sociobiol 33:393–402CrossRefGoogle Scholar
  37. Snowdon CT, Cleveland J (1984) “Conversations” among pygmy marmosets. Am J Primatol 7:15–20CrossRefGoogle Scholar
  38. Snowdon CT, Hodun A (1985) Troop-specific responses to long calls of isolated tamarins (Saguinus mystax). Am J Primatol 8:205–213CrossRefGoogle Scholar
  39. Soltis J, Leong K, Savage A (2005) African elephant vocal communication I: antiphonal calling behaviour among affiliated females. Anim Behav 70:79–587Google Scholar
  40. Sugiura H (1993) Temporal and acoustic correlates in vocal exchange of coo calls in Japanese macaques. Behaviour 124:207–225CrossRefGoogle Scholar
  41. Sugiura H (1998) Matching of acoustic features during the vocal exchange of coo calls by Japanese macaques. Anim Behav 55:673–687PubMedCrossRefGoogle Scholar
  42. Sugiura H (2001) Vocal exchange of coo calls in Japanese macaques. In: Matsuzawa T (ed) Primate origins of human cognition and behavior. Springer, Tokyo, pp 135–154Google Scholar
  43. Tyack PL (1986) Whistle repertoires of two bottlenose dolphins, Tursiops truncatus: mimicry of signature whistles? Behav Ecol Sociobiol 18:251–257CrossRefGoogle Scholar
  44. Tyack PL (2000) Dolphins whistle a signature tune. Science 289:1310–1311PubMedCrossRefGoogle Scholar
  45. Watwood SL, Tyack PL, Wells RS (2004) Whistle sharing in paired male bottlenose dolphins, Tursiops truncatus. Behav Ecol Sociobiol 55:531–543CrossRefGoogle Scholar
  46. Watwood SL, Owen ECG, Tyack PL, Wells RS (2005) Signature whistle use by temporarily restrained and free-swimming bottlenose dolphins, Tursiops truncatus. Anim Behav 69:1373–1386CrossRefGoogle Scholar
  47. Wells RS, Scott MD (2009) Common bottlenose dolphin. In: Perrin WF, Würsig B, Thewissen JGM (eds) Encyclopedia of marine mammals, 2nd edn edn. Academic, San Diego, pp 249–255Google Scholar
  48. Wells RS, Scott MD, Irvine AB (1987) The social structure of free-ranging bottlenose dolphins. In: Genoways HH (ed) Current mammalogy. Plenum, New York, pp 247–305Google Scholar
  49. Winter P, Ploog D, Latta J (1966) Vocal repertoire of the squirrel monkey (Saimiri sciureus), its analysis and significance. Exp Brain Res 1:359–384PubMedCrossRefGoogle Scholar

Copyright information

© Japan Ethological Society and Springer 2011

Authors and Affiliations

  1. 1.College of Community DevelopmentTokiwa UniversityMitoJapan
  2. 2.Ocean Research InstituteThe University of TokyoTokyoJapan

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