Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira
Spinner dolphins’ bioacoustics have already been described in literature, meanwhile the Western South Atlantic Ocean was only approached inside Fernando de Noronha Archipelago. Therefore, in order to contribute to a better knowledge of this cosmopolitan species, this study aimed to describe the soun...
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ftunivfjf:oai:hermes.cpd.ufjf.br:ufjf/129 2023-05-15T18:21:01+02:00 Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira Moron, Juliana Rodrigues Andriolo, Artur http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4700793Y6 Santos, Marcos Roberto Rossi dos http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4769150E1 Mobley, Renata Santoro de Sousa Lima http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4768865Y9 Alves, Luiz Cláudio Pinto de Sá http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4738205Y6 2015-03-30 application/pdf https://repositorio.ufjf.br/jspui/handle/ufjf/129 por por Universidade Federal de Juiz de Fora Brasil ICB – Instituto de Ciências Biológicas Programa de Pós-graduação em Ecologia UFJF https://repositorio.ufjf.br/jspui/handle/ufjf/129 Acesso Aberto Bioacústica Stenella longirostris Oceano Atlântico Sul Bioacoustics South Atlantic Ocean Ecologia e Bioacústica Dissertação 2015 ftunivfjf 2022-07-17T13:04:54Z Spinner dolphins’ bioacoustics have already been described in literature, meanwhile the Western South Atlantic Ocean was only approached inside Fernando de Noronha Archipelago. Therefore, in order to contribute to a better knowledge of this cosmopolitan species, this study aimed to describe the sounds through their acoustic parameters detected during an opportunistic recording carried out at the Brazilian continental shelf break. A group of approximate 400 Stenella longirostris dolphins was recorded through a one-element hydrophone array performing continuous mono recording at 96 kHz/24 bits. After a 12 minutes selection of the record, 1,100 whistles were extracted and classified into seven contours shapes, along with other ten variables extracted. The spinner dolphins whistles was mostly comprised by upsweep (41.2%) contour. The group produced higher pitch frequency modulated whistles than what has been previously described, presenting a maximum frequency of 26.4 kHz. Despite the short whistle durations, ranging from 0.03 s to 2.56 s (mean = 0.67 s), those values were also higher than most of previous works had reported. Despite statistically significant differences, the comparison from the average of the extracted parameters pointed out that two previous studies in the North Pacific Ocean are more similar in relation to this study. Thereby, the possibilities from the comparisons discussed in this paper not only assist in identifying the variability in the emissions in order to improve acoustic detection classifications in research and impact mitigation; but also contribute to the understanding of distinct populations and/or species distributed in different ocean basins. Apesar de investigações bioacústicas de golfinhos-rotadores já terem sido abordadas e descritas na literatura, a região do Oceano Atlântico Sul Ocidental só abrangeu a população do arquipélago de Fernando de Noronha. Portanto, a fim de contribuir para um melhor conhecimento desta espécie cosmopolita, este estudo teve como objetivo descrever ... Thesis South Atlantic Ocean Repositório Institucional da UFJF (Ri-UFJF, Universidade Federal De Juiz De Fora) Pacific |
institution |
Open Polar |
collection |
Repositório Institucional da UFJF (Ri-UFJF, Universidade Federal De Juiz De Fora) |
op_collection_id |
ftunivfjf |
language |
Portuguese |
topic |
Bioacústica Stenella longirostris Oceano Atlântico Sul Bioacoustics South Atlantic Ocean Ecologia e Bioacústica |
spellingShingle |
Bioacústica Stenella longirostris Oceano Atlântico Sul Bioacoustics South Atlantic Ocean Ecologia e Bioacústica Moron, Juliana Rodrigues Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira |
topic_facet |
Bioacústica Stenella longirostris Oceano Atlântico Sul Bioacoustics South Atlantic Ocean Ecologia e Bioacústica |
description |
Spinner dolphins’ bioacoustics have already been described in literature, meanwhile the Western South Atlantic Ocean was only approached inside Fernando de Noronha Archipelago. Therefore, in order to contribute to a better knowledge of this cosmopolitan species, this study aimed to describe the sounds through their acoustic parameters detected during an opportunistic recording carried out at the Brazilian continental shelf break. A group of approximate 400 Stenella longirostris dolphins was recorded through a one-element hydrophone array performing continuous mono recording at 96 kHz/24 bits. After a 12 minutes selection of the record, 1,100 whistles were extracted and classified into seven contours shapes, along with other ten variables extracted. The spinner dolphins whistles was mostly comprised by upsweep (41.2%) contour. The group produced higher pitch frequency modulated whistles than what has been previously described, presenting a maximum frequency of 26.4 kHz. Despite the short whistle durations, ranging from 0.03 s to 2.56 s (mean = 0.67 s), those values were also higher than most of previous works had reported. Despite statistically significant differences, the comparison from the average of the extracted parameters pointed out that two previous studies in the North Pacific Ocean are more similar in relation to this study. Thereby, the possibilities from the comparisons discussed in this paper not only assist in identifying the variability in the emissions in order to improve acoustic detection classifications in research and impact mitigation; but also contribute to the understanding of distinct populations and/or species distributed in different ocean basins. Apesar de investigações bioacústicas de golfinhos-rotadores já terem sido abordadas e descritas na literatura, a região do Oceano Atlântico Sul Ocidental só abrangeu a população do arquipélago de Fernando de Noronha. Portanto, a fim de contribuir para um melhor conhecimento desta espécie cosmopolita, este estudo teve como objetivo descrever ... |
author2 |
Andriolo, Artur http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4700793Y6 Santos, Marcos Roberto Rossi dos http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4769150E1 Mobley, Renata Santoro de Sousa Lima http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4768865Y9 Alves, Luiz Cláudio Pinto de Sá http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4738205Y6 |
format |
Thesis |
author |
Moron, Juliana Rodrigues |
author_facet |
Moron, Juliana Rodrigues |
author_sort |
Moron, Juliana Rodrigues |
title |
Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira |
title_short |
Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira |
title_full |
Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira |
title_fullStr |
Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira |
title_full_unstemmed |
Caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul Brasileira |
title_sort |
caracterização dos parâmetros acústicos do golfinho-rotador: registro na quebra da plataforma continental sul brasileira |
publisher |
Universidade Federal de Juiz de Fora |
publishDate |
2015 |
url |
https://repositorio.ufjf.br/jspui/handle/ufjf/129 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
https://repositorio.ufjf.br/jspui/handle/ufjf/129 |
op_rights |
Acesso Aberto |
_version_ |
1766200028309749760 |