Characteristics of whistles from rough-toothed dolphins ( Steno bredanensis ) in Rio de Janeiro coast, southeastern Brazil
There is no information about the whistles of rough-toothed dolphins in the South Atlantic Ocean. This study characterizes the whistle structure of free-ranging rough-toothed dolphins recorded on the Rio de Janeiro coast, southeastern Brazil, and compares it to that of the same species in other regi...
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| Veröffentlicht in: | The Journal of the Acoustical Society of America 2012-05, Vol.131 (5), p.4173-4181 |
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| container_title | The Journal of the Acoustical Society of America |
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| creator | Seabra de Lima, Isabela Maria de Andrade, Luciana Guimarães Ramos de Carvalho, Rafael Lailson-Brito, José de Freitas Azevedo, Alexandre |
| description | There is no information about the whistles of rough-toothed dolphins in the South Atlantic Ocean. This study characterizes the whistle structure of free-ranging rough-toothed dolphins recorded on the Rio de Janeiro coast, southeastern Brazil, and compares it to that of the same species in other regions. A total of 340 whistles were analyzed. Constant (
N
=115; 33.8%) and ascending (
N
=99; 29.1%) whistles were the most common contours. The whistles recorded had their fundamental frequencies between 2.24 and 13.94kHz. Whistles without inflection points were frequently emitted (
N
=255; 75%). Some signals presented breaks or steps in their contour (
N
=97; 28.5%). Whistle duration was short (347±236ms and 89.7% of the whistles lasted |
| doi_str_mv | 10.1121/1.3701878 |
| format | Article |
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N
=115; 33.8%) and ascending (
N
=99; 29.1%) whistles were the most common contours. The whistles recorded had their fundamental frequencies between 2.24 and 13.94kHz. Whistles without inflection points were frequently emitted (
N
=255; 75%). Some signals presented breaks or steps in their contour (
N
=97; 28.5%). Whistle duration was short (347±236ms and 89.7% of the whistles lasted <600ms). Seventy-eight whistle contour types were found in the total of whistles analyzed, and 27 (7.9%) of these occurred only once. Most of the whistle types were unique to a particular recording session (
N
=43). The signals emitted by the rough-toothed dolphins in southeastern Brazil were characterized by low frequency modulation, short duration, low number of inflection points, and breaks. Differences in the mean values of the whistle parameters were found between this and other studies that recorded
Steno bredanensis
, but as in other localities, whistles above 14kHz are rare.</description><identifier>ISSN: 0001-4966</identifier><identifier>EISSN: 1520-8524</identifier><identifier>DOI: 10.1121/1.3701878</identifier><identifier>PMID: 22559388</identifier><identifier>CODEN: JASMAN</identifier><language>eng</language><publisher>Melville, NY: Acoustical Society of America</publisher><subject>Acoustics ; Animals ; Data Collection - methods ; Dolphins - physiology ; Exact sciences and technology ; Fundamental areas of phenomenology (including applications) ; Physics ; Sound Spectrography ; Underwater sound ; Vocalization, Animal - physiology</subject><ispartof>The Journal of the Acoustical Society of America, 2012-05, Vol.131 (5), p.4173-4181</ispartof><rights>2012 Acoustical Society of America</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-48566c995181915f575669a0e2642d139e23bdf4163575bb9a3ccddf1e957b433</citedby><cites>FETCH-LOGICAL-c403t-48566c995181915f575669a0e2642d139e23bdf4163575bb9a3ccddf1e957b433</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jasa/article-lookup/doi/10.1121/1.3701878$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>207,208,314,780,784,794,1565,4512,27924,27925,76384</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25871671$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22559388$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Seabra de Lima, Isabela Maria</creatorcontrib><creatorcontrib>de Andrade, Luciana Guimarães</creatorcontrib><creatorcontrib>Ramos de Carvalho, Rafael</creatorcontrib><creatorcontrib>Lailson-Brito, José</creatorcontrib><creatorcontrib>de Freitas Azevedo, Alexandre</creatorcontrib><title>Characteristics of whistles from rough-toothed dolphins ( Steno bredanensis ) in Rio de Janeiro coast, southeastern Brazil</title><title>The Journal of the Acoustical Society of America</title><addtitle>J Acoust Soc Am</addtitle><description>There is no information about the whistles of rough-toothed dolphins in the South Atlantic Ocean. This study characterizes the whistle structure of free-ranging rough-toothed dolphins recorded on the Rio de Janeiro coast, southeastern Brazil, and compares it to that of the same species in other regions. A total of 340 whistles were analyzed. Constant (
N
=115; 33.8%) and ascending (
N
=99; 29.1%) whistles were the most common contours. The whistles recorded had their fundamental frequencies between 2.24 and 13.94kHz. Whistles without inflection points were frequently emitted (
N
=255; 75%). Some signals presented breaks or steps in their contour (
N
=97; 28.5%). Whistle duration was short (347±236ms and 89.7% of the whistles lasted <600ms). Seventy-eight whistle contour types were found in the total of whistles analyzed, and 27 (7.9%) of these occurred only once. Most of the whistle types were unique to a particular recording session (
N
=43). The signals emitted by the rough-toothed dolphins in southeastern Brazil were characterized by low frequency modulation, short duration, low number of inflection points, and breaks. Differences in the mean values of the whistle parameters were found between this and other studies that recorded
Steno bredanensis
, but as in other localities, whistles above 14kHz are rare.</description><subject>Acoustics</subject><subject>Animals</subject><subject>Data Collection - methods</subject><subject>Dolphins - physiology</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Physics</subject><subject>Sound Spectrography</subject><subject>Underwater sound</subject><subject>Vocalization, Animal - physiology</subject><issn>0001-4966</issn><issn>1520-8524</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkduKFDEQhoMo7rh64QtIboRdsNdUDt3JjaCDRxYED9dNOknbkZ7ObCrN4j69WWZUEMSrOn31V8FPyGNgFwAcnsOF6BjoTt8hG1CcNVpxeZdsGGPQSNO2J-QB4vdaKi3MfXLCuVJGaL0hN9vJZutKyBFLdEjTSK-nms8B6ZjTjua0fpuaklKZgqc-zfspLkjP6OcSlkSHHLxdwoIR6TmNC_0UE_WBfqjNmBN1yWJ5RjGtdb-mIS_0VbY3cX5I7o12xvDoGE_J1zevv2zfNZcf377fvrxsnGSiNFKrtnXGKNBgQI2qq7WxLPBWcg_CBC4GP0poRR0Ng7HCOe9HCEZ1gxTilJwddPc5Xa0BS7-L6MI81w_Tij1wDlIy0-r_o4wzzXX9pKLnB9TlhJjD2O9z3Nn8o0L9rSs99EdXKvvkKLsOu-B_k79sqMDTI2DR2XnMdnER_3BKd9B2t0dfHDh0sdgS0_Lvq38Z26exvxY_AcWMqK8</recordid><startdate>20120501</startdate><enddate>20120501</enddate><creator>Seabra de Lima, Isabela Maria</creator><creator>de Andrade, Luciana Guimarães</creator><creator>Ramos de Carvalho, Rafael</creator><creator>Lailson-Brito, José</creator><creator>de Freitas Azevedo, Alexandre</creator><general>Acoustical Society of America</general><general>American Institute of Physics</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7T9</scope></search><sort><creationdate>20120501</creationdate><title>Characteristics of whistles from rough-toothed dolphins ( Steno bredanensis ) in Rio de Janeiro coast, southeastern Brazil</title><author>Seabra de Lima, Isabela Maria ; de Andrade, Luciana Guimarães ; Ramos de Carvalho, Rafael ; Lailson-Brito, José ; de Freitas Azevedo, Alexandre</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-48566c995181915f575669a0e2642d139e23bdf4163575bb9a3ccddf1e957b433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Acoustics</topic><topic>Animals</topic><topic>Data Collection - methods</topic><topic>Dolphins - physiology</topic><topic>Exact sciences and technology</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Physics</topic><topic>Sound Spectrography</topic><topic>Underwater sound</topic><topic>Vocalization, Animal - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Seabra de Lima, Isabela Maria</creatorcontrib><creatorcontrib>de Andrade, Luciana Guimarães</creatorcontrib><creatorcontrib>Ramos de Carvalho, Rafael</creatorcontrib><creatorcontrib>Lailson-Brito, José</creatorcontrib><creatorcontrib>de Freitas Azevedo, Alexandre</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Linguistics and Language Behavior Abstracts (LLBA)</collection><jtitle>The Journal of the Acoustical Society of America</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Seabra de Lima, Isabela Maria</au><au>de Andrade, Luciana Guimarães</au><au>Ramos de Carvalho, Rafael</au><au>Lailson-Brito, José</au><au>de Freitas Azevedo, Alexandre</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characteristics of whistles from rough-toothed dolphins ( Steno bredanensis ) in Rio de Janeiro coast, southeastern Brazil</atitle><jtitle>The Journal of the Acoustical Society of America</jtitle><addtitle>J Acoust Soc Am</addtitle><date>2012-05-01</date><risdate>2012</risdate><volume>131</volume><issue>5</issue><spage>4173</spage><epage>4181</epage><pages>4173-4181</pages><issn>0001-4966</issn><eissn>1520-8524</eissn><coden>JASMAN</coden><abstract>There is no information about the whistles of rough-toothed dolphins in the South Atlantic Ocean. This study characterizes the whistle structure of free-ranging rough-toothed dolphins recorded on the Rio de Janeiro coast, southeastern Brazil, and compares it to that of the same species in other regions. A total of 340 whistles were analyzed. Constant (
N
=115; 33.8%) and ascending (
N
=99; 29.1%) whistles were the most common contours. The whistles recorded had their fundamental frequencies between 2.24 and 13.94kHz. Whistles without inflection points were frequently emitted (
N
=255; 75%). Some signals presented breaks or steps in their contour (
N
=97; 28.5%). Whistle duration was short (347±236ms and 89.7% of the whistles lasted <600ms). Seventy-eight whistle contour types were found in the total of whistles analyzed, and 27 (7.9%) of these occurred only once. Most of the whistle types were unique to a particular recording session (
N
=43). The signals emitted by the rough-toothed dolphins in southeastern Brazil were characterized by low frequency modulation, short duration, low number of inflection points, and breaks. Differences in the mean values of the whistle parameters were found between this and other studies that recorded
Steno bredanensis
, but as in other localities, whistles above 14kHz are rare.</abstract><cop>Melville, NY</cop><pub>Acoustical Society of America</pub><pmid>22559388</pmid><doi>10.1121/1.3701878</doi><tpages>9</tpages></addata></record> |
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| source | MEDLINE; AIP Journals Complete; Acoustical Society of America (AIP); Alma/SFX Local Collection |
| subjects | Acoustics Animals Data Collection - methods Dolphins - physiology Exact sciences and technology Fundamental areas of phenomenology (including applications) Physics Sound Spectrography Underwater sound Vocalization, Animal - physiology |
| title | Characteristics of whistles from rough-toothed dolphins ( Steno bredanensis ) in Rio de Janeiro coast, southeastern Brazil |
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