Improving individual identification in captive Eastern grey wolves (Canis lupus lycaon) using the time course of howl amplitudes

REFERENCES

• AgnarssonI, KuntnerM, May-ColladoLJ. 2010. Dogs, cats, and kin: a molecular species-level phylogeny of carnivora. Molecular Phylogenetics and Evology54(3):726–745.
   PubMed Web of Science ®Google Scholar
• Benson-AmramS, HeinenVK, DryerSL, HolekampKE. 2011. Numerical assessment and individual call discrimination by wild spotted hyaenas, Crocuta crocuta. Animal Behaviour82(4):743–752.
   Web of Science ®Google Scholar
• Boersma P, Weenink D. 2005. Praat: doing phonetics by computer. [Computer program]. Version 5.Holland: University of Amsterdam. http://www.praat.org/.
   Google Scholar
• BradburyJW, VehrencampSL. 1998. Principles of animal communication. Sunderland, MA: Sinauer Associates.
   Google Scholar
• BrieferEF, de la TorreMP, McElligottAG. 2012. Mother goats do not forget their kids' calls. Proceedings of the Royal Society B: Biological Sciences279(1743):3749–3755.
   PubMed Web of Science ®Google Scholar
• BrieferE, McElligottAG. 2011. Mutual mother–offspring vocal recognition in an ungulate hider species (Capra hircus). Animal Cognition14(4):585–598.
   PubMed Web of Science ®Google Scholar
• BrummH, SlaterPJB. 2006. Animals can vary signal amplitude with receiver distance: Evidence from zebra finch song. Animal Behaviour72:699–705.
   Web of Science ®Google Scholar
• CharltonBD, ZhiheZhang, SnyderRJ. 2009. Vocal cues to identity and relatedness in giant pandas (Ailuropoda melanoleuca). Journal of Acoustical Society of America126(5):2721–2732.
   PubMed Web of Science ®Google Scholar
• CharrierI, HarcourtRG. 2006. Individual vocal identity in mother and pup australian sea lions (Neophoca cinerea). Journal of Mammalogy87(5):929–938.
   Web of Science ®Google Scholar
• DardenSK, DabelsteenT, PedersenSB. 2003. A potential tool for swift fox (Vulpes velox) conservation: individuality of long-range barking sequences. Journal of Mammalogy84(4):1417–1427.
   Web of Science ®Google Scholar
• DepraetereM, PavoineS, JiguetF, GascA, DuvailS, SueurJ. 2012. Monitoring animal diversity using acoustic indices: implementation in a temperate woodland. Ecological Indicators13(1):46–54.
   Web of Science ®Google Scholar
• DigweedSM, RendallD, ImbeauT. 2012. Who's your neighbor? Acoustic cues to individual identity in red squirrel Tamiasciurus hudsonicus rattle calls. Current Zoology58(5):758–764.
   Web of Science ®Google Scholar
• FrommoltKH, GoltsmanME, MacDonaldDW. 2003. Barking foxes, Alopex lagopus: field experiments in individual recognition in a territorial mammal. Animal Behaviour65:509–518.
   Web of Science ®Google Scholar
• GambaM, ColomboC, GiacomaC. 2012. Acoustic cues to caller identity in lemurs: a case study. Journal of Ethology30(1):191–196.
   Web of Science ®Google Scholar
• HarringtonFH, AsaCS. 2003. Wolf communication. In: MechLD, BoitaniL, editors. Wolves: behaviour, ecology and conservation. 1st ed.. Chicago, IL: 66 ppUniversity of Chicago Press.
   Google Scholar
• HartwigS. 2005. Individual acoustic identification as a non-invasive conservation tool: an approach to the conservation of the African wild dog Lycaonpictus (Temminck, 1820). Bioacoustics15(1):35–50.
   Web of Science ®Google Scholar
• JoslinPWB. 1967. Movements and home sites of timber wolves in Algonquin Park. American Zoologist7(2):279–288.
   Google Scholar
• LameiraAR, WichSA. 2008. Orangutan long call degradation and individuality over distance: a playback approach. International Journal of Primatology29(3):615–625.
   Web of Science ®Google Scholar
• Mathworks Inc.T. 2005. Matlab and simulink student version electronic resource. Release 14 Service Pack 3.Natick, MA: MathWorks.
   Google Scholar
• McshaneLJ, EstesJA, RiedmanML, StaedlerMM. 1995. Repertoire, structure, and individual variation of vocalizations in the sea otter. Journal of Mammalogy76(2):414–427.
   Web of Science ®Google Scholar
• MitchellBR, MakagonMM, JaegerMM, BarrettRH. 2006. Information content of coyote barks and howls. Bioacoustics15(3):289–314.
   Web of Science ®Google Scholar
• PalaciosV, FontE, MárquezR. 2007. Iberian wolf howls: acoustic structure, individual variation, and a comparison with North American populations. Journal of Mammalogy88(3):606–613.
   Web of Science ®Google Scholar
• Palacios V, Llaneza L, Dugnol B, Ferna´ndez C, Galiano G, Velasco J. 2012. Bloodhound, a tool based on the chirplet transform for the analysis of wolf chorus howls recordings. In Abstracts of Oral Presentations, Bioacoustics-the International Journal of Animal Sound and its Recording21(1):25–63 (50).
   Google Scholar
• Passilongo D, Dessi-Fulgheri F, Gazzola A, Zaccaroni M, Apollonio M. 2012. Wolf counting and individual acoustic discrimination by spectographic analysis (abstract). Bioacoustics21(1):78–79.
   Google Scholar
• PearsonK. 1901. On lines and planes of closest fit to systems of points in space. Philosophical Magazine2(6):559–572.
   Google Scholar
• PitcherBJ, HarcourtRG, CharrierI. 2012. Individual identity encoding and environmental constraints in vocal recognition of pups by Australian sea lion mothers. Animal Behaviour83(3):681–690.
   Web of Science ®Google Scholar
• RekP, OsiejukTS. 2011. No male identity information loss during call propagation through dense vegetation: the case of the corncrake. Behavioural Processes86(3):323–328.
   PubMed Web of Science ®Google Scholar
• SchraderL, HammerschmidtK. 1997. Computer-aided analysis of acoustic parameters in animal vocalisations: a multi-parametric approach. Bioacoustics7(4):247–265.
   Google Scholar
• SkaricGV. 2008. Speaker verification in forensic phonetics. Govor25(1):31–44.
   Web of Science ®Google Scholar
• SPSS Inc.2010. SPSS. [computer program].Chicago, IL: SPSS Inc.
   Google Scholar
• TerryAMR, PeakeTM, McGregorPK. 2005. The role of vocal individuality in conservation. Frontiers in Zoology2(1):10.
   PubMedGoogle Scholar
• ThebergeJA, FallsJB. 1967. Howling as a means of communication in timber wolves. American Zoologist7(2):331–338.
   Google Scholar
• ToozeZJ, HarringtonFH, FentressJC. 1990. Individually distinct vocalizations in timber wolves, Canis lupus. Animal Behaviour40:723–730.
   Web of Science ®Google Scholar
• ZsebokS, EstokP, GoerfoelT. 2012. Acoustic discrimination of Pipistrelluskuhlii and Pipistrellusnathusii (Chiroptera: Vespertilionidae) and its application to assess changes in species distribution. Acta Zoologica Academiae Scientiarum Hungaricae58(2):199–209.
   Web of Science ®Google Scholar