| Registro completo |
| Provedor de dados: |
Anais da ABC (AABC)
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| País: |
Brazil
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| Título: |
Analysis of whistles produced by the Tucuxi Dolphin Sotalia fluviatilis from Sepetiba Bay, Brazil
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| Autores: |
Erber,Claudia
Simão,Sheila M.
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| Data: |
2004-06-01
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| Ano: |
2004
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| Palavras-chave: |
Sotalia fluviatilis
Cetacea
Delphinidea
Vocal repertoire
Whistles
Behavior
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| Resumo: |
From July 2001 to June 2002, we recorded a total of 2h55min of Tucuxi Dolphin Sotalia fluviatilis vocalizations from Sepetiba Bay, Brazil (22º35'S-44º03'W). A total of 3350 whistles were analyzed quantitative and qualitatively and were divided into 124 types, by visual inspection of sonograms. The following parameters were measured: Initial Frequency, Final Frequency, Minimum Frequency, Maximum Frequency, Duration, Number of Inflections, Frequency at the Inflection Points, Frequency at 1/2, 1/4, and 3/4 of whistle duration, Presence of Frequency Modulation and Harmonics. Ascending type whistles (N=2719) were most common, representing 82% of the total. Dolphin behavior and average group size observed during recording influenced the whistle's quantitative and qualitative parameters. The results demonstrate the great diversity of whistles emitted and indicate a functional role of these vocalizations during the observed behaviors.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200029
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| Editor: |
Academia Brasileira de Ciências
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| Relação: |
10.1590/S0001-37652004000200029
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| Formato: |
text/html
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| Fonte: |
Anais da Academia Brasileira de Ciências v.76 n.2 2004
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| Direitos: |
info:eu-repo/semantics/openAccess
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