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Data de Publicação: | 2007 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Biotemas (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/biotemas/article/view/20775 |
Resumo: | Analysis of Cookiecutter shark Isistius spp. (Squaliformes; Dalatiidae) bites in cetaceans (Mammalia; Cetacea) on the Bahia coast, northeastern Brazil. Few studies have registered signs of mutilation on cetaceans in Brazil, especially from shark attacks. This work describes interactions between cookiecutter sharks Isistius spp. and cetaceans through the analysis of bite records for cetacean carcasses washed ashore on the Bahia coast between 1996 and 2005. Twenty bite records were analyzed in 13 cetacean species, of which the Delphinidae family was the most frequent. After the analysis, Isistius plutodus was identified as the aggressor species on 80% of the records, followed by I. brasiliensis (20%), based on the characteristic shape of the mutilations. The areas most subject to attack in cetaceans were: flanks 40%; head and abdomen 20% each; dorsal 15%; and genital with 5%. The relatively high number of bites on the flanks was probably due to its larger area, which offered greater opportunities to the cookiecutter shark. At least three bite records were related to the possible causes of strandings in delphinids. We recommend further studies on interactions between sharks and cetaceans along the Brazilian coast. |
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.Análise das mordidas de tubarões-charuto, Isistius spp. (Squaliformes: Dalatiidae) em cetáceos (Mammalia: Cetacea) no litoral da Bahia, Nordeste do Brasil.Analysis of Cookiecutter shark Isistius spp. (Squaliformes; Dalatiidae) bites in cetaceans (Mammalia; Cetacea) on the Bahia coast, northeastern Brazil. Few studies have registered signs of mutilation on cetaceans in Brazil, especially from shark attacks. This work describes interactions between cookiecutter sharks Isistius spp. and cetaceans through the analysis of bite records for cetacean carcasses washed ashore on the Bahia coast between 1996 and 2005. Twenty bite records were analyzed in 13 cetacean species, of which the Delphinidae family was the most frequent. After the analysis, Isistius plutodus was identified as the aggressor species on 80% of the records, followed by I. brasiliensis (20%), based on the characteristic shape of the mutilations. The areas most subject to attack in cetaceans were: flanks 40%; head and abdomen 20% each; dorsal 15%; and genital with 5%. The relatively high number of bites on the flanks was probably due to its larger area, which offered greater opportunities to the cookiecutter shark. At least three bite records were related to the possible causes of strandings in delphinids. We recommend further studies on interactions between sharks and cetaceans along the Brazilian coast.Poucos estudos registraram sinais de mutilações em cetáceos no Brasil, especialmente aqueles provenientes de ataques de tubarões. O presente trabalho descreve interações entre tubarões-charuto, Isistius spp., e cetáceos através dos registros e análises de mordidas presentes em carcaças de cetáceos encalhados no litoral baiano, entre 1996 e 2005. Foram obtidos 20 registros de mordidas em 13 espécies de cetáceos, sendo a família Delphinidae a mais freqüente. Após análise das mordidas, Isistius plutodus foi identificado como espécie agressora em 80% dos casos, seguida de I. brasiliensis com base na forma característica das mutilações. No presente estudo as regiões dos cetáceos mais atacadas foram: flancos, 40%; cabeça e região abdominal, ambas com 20%; dorso com 15% e por último, a região urogenital com 5%. A concentração das mordidas na região dos flancos, provavelmente se deu por ser uma área maior, sendo acessada mais facilmente pelos tubarões-charuto. Apenas três mordidas foram relacionadas como possíveis causas dos encalhes de três espécies de delfinídeos. Sugerimos a intensificação dos estudos acerca das interações entre tubarões e cetáceos em todo o litoral brasileiro. Universidade Federal de Santa Catarina2007-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/20775Biotemas; v. 20 n. 1 (2007); 19-252175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/biotemas/article/view/20775/18872Copyright (c) 2007 Luciano Raimundo Alardo Souto, Janete Gomes Abrão Oliveira, José de Anchieta Cintra da Costa Nunes, Rodrigo Maia-Nogueira, Cláudio L. S. Sampaiohttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSouto, Luciano Raimundo AlardoOliveira, Janete Gomes AbrãoNunes, José de Anchieta Cintra da CostaMaia-Nogueira, RodrigoSampaio, Cláudio L. S.2022-11-21T11:52:38Zoai:periodicos.ufsc.br:article/20775Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2022-11-21T11:52:38Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
. Análise das mordidas de tubarões-charuto, Isistius spp. (Squaliformes: Dalatiidae) em cetáceos (Mammalia: Cetacea) no litoral da Bahia, Nordeste do Brasil. |
title |
. |
spellingShingle |
. Souto, Luciano Raimundo Alardo |
title_short |
. |
title_full |
. |
title_fullStr |
. |
title_full_unstemmed |
. |
title_sort |
. |
author |
Souto, Luciano Raimundo Alardo |
author_facet |
Souto, Luciano Raimundo Alardo Oliveira, Janete Gomes Abrão Nunes, José de Anchieta Cintra da Costa Maia-Nogueira, Rodrigo Sampaio, Cláudio L. S. |
author_role |
author |
author2 |
Oliveira, Janete Gomes Abrão Nunes, José de Anchieta Cintra da Costa Maia-Nogueira, Rodrigo Sampaio, Cláudio L. S. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Souto, Luciano Raimundo Alardo Oliveira, Janete Gomes Abrão Nunes, José de Anchieta Cintra da Costa Maia-Nogueira, Rodrigo Sampaio, Cláudio L. S. |
description |
Analysis of Cookiecutter shark Isistius spp. (Squaliformes; Dalatiidae) bites in cetaceans (Mammalia; Cetacea) on the Bahia coast, northeastern Brazil. Few studies have registered signs of mutilation on cetaceans in Brazil, especially from shark attacks. This work describes interactions between cookiecutter sharks Isistius spp. and cetaceans through the analysis of bite records for cetacean carcasses washed ashore on the Bahia coast between 1996 and 2005. Twenty bite records were analyzed in 13 cetacean species, of which the Delphinidae family was the most frequent. After the analysis, Isistius plutodus was identified as the aggressor species on 80% of the records, followed by I. brasiliensis (20%), based on the characteristic shape of the mutilations. The areas most subject to attack in cetaceans were: flanks 40%; head and abdomen 20% each; dorsal 15%; and genital with 5%. The relatively high number of bites on the flanks was probably due to its larger area, which offered greater opportunities to the cookiecutter shark. At least three bite records were related to the possible causes of strandings in delphinids. We recommend further studies on interactions between sharks and cetaceans along the Brazilian coast. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/20775 |
url |
https://periodicos.ufsc.br/index.php/biotemas/article/view/20775 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/20775/18872 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
dc.source.none.fl_str_mv |
Biotemas; v. 20 n. 1 (2007); 19-25 2175-7925 0103-1643 reponame:Biotemas (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Biotemas (Online) |
collection |
Biotemas (Online) |
repository.name.fl_str_mv |
Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
||carlospinto@ccb.ufsc.br |
_version_ |
1799940550435012608 |