Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini

Detalhes bibliográficos
Autor(a) principal: Martins, Mariana F. [UNESP]
Data de Publicação: 2020
Outros Autores: Rolim, Fernanda A. [UNESP], Gadig, Otto B. F. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1111/jfb.14368
http://hdl.handle.net/11449/196890
Resumo: This study describes the fetal mummification process in two embryos of a 310 cm total length scalloped hammerhead shark Sphyrna lewini caught in southeastern Brazil, in December 2017. Fourteen embryos were observed in total, in which two males in the left uterus presented different stages of mummification. Both mummified embryos were covered by an exudate (i.e., a mucous substance), indicating a hematic mummification process. All embryos were at the placentotrophic stage of development, indicating that they were close to parturition. An intrinsic characteristic is suggested as possible etiology for this condition, such as umbilical torsion, because both embryos were at different sizes and, therefore, at different development stages. In addition, the sample size did not allow the authors to presume any pollution effect once only one female was observed. Finally, fetal mummification and other embryonic development disorders might have populational impacts due to reduction in embryo survival and, consequently, recruitment. For this reason and considering that S. lewini is categorized as a critically endangered species, this study's results have conservational relevance.
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spelling Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewiniCarcharhiniformesembryohematic mummificationSphyrnidaeumbilical torsionThis study describes the fetal mummification process in two embryos of a 310 cm total length scalloped hammerhead shark Sphyrna lewini caught in southeastern Brazil, in December 2017. Fourteen embryos were observed in total, in which two males in the left uterus presented different stages of mummification. Both mummified embryos were covered by an exudate (i.e., a mucous substance), indicating a hematic mummification process. All embryos were at the placentotrophic stage of development, indicating that they were close to parturition. An intrinsic characteristic is suggested as possible etiology for this condition, such as umbilical torsion, because both embryos were at different sizes and, therefore, at different development stages. In addition, the sample size did not allow the authors to presume any pollution effect once only one female was observed. Finally, fetal mummification and other embryonic development disorders might have populational impacts due to reduction in embryo survival and, consequently, recruitment. For this reason and considering that S. lewini is categorized as a critically endangered species, this study's results have conservational relevance.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Fed Rio Grande FURG, Programa Posgrad Ciencias Fisiol, Inst Ciencias Biol, Ave Italia Km 8, BR-96203900 Rio Grande, RS, BrazilUniv Estadual Paulista, Lab Pesquisas Elasmobranquios, Inst Biociencias, Sao Vicente, BrazilUniv Estadual Paulista, Programa Posgrad Ciencias Biol Zool, Inst Biociencias, Rio Claro, BrazilUniv Estadual Paulista, Lab Pesquisas Elasmobranquios, Inst Biociencias, Sao Vicente, BrazilUniv Estadual Paulista, Programa Posgrad Ciencias Biol Zool, Inst Biociencias, Rio Claro, BrazilCAPES: 001CNPq: 308430/2015-8Wiley-BlackwellUniv Fed Rio Grande FURGUniversidade Estadual Paulista (Unesp)Martins, Mariana F. [UNESP]Rolim, Fernanda A. [UNESP]Gadig, Otto B. F. [UNESP]2020-12-10T19:59:25Z2020-12-10T19:59:25Z2020-05-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article309-313http://dx.doi.org/10.1111/jfb.14368Journal Of Fish Biology. Hoboken: Wiley, v. 97, n. 1, p. 309-313, 2020.0022-1112http://hdl.handle.net/11449/19689010.1111/jfb.14368WOS:000533989400001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Fish Biologyinfo:eu-repo/semantics/openAccess2021-10-23T10:02:19Zoai:repositorio.unesp.br:11449/196890Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:38:28.781601Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
title Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
spellingShingle Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
Martins, Mariana F. [UNESP]
Carcharhiniformes
embryo
hematic mummification
Sphyrnidae
umbilical torsion
title_short Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
title_full Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
title_fullStr Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
title_full_unstemmed Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
title_sort Report on fetal mummification in the scalloped hammerhead shark Sphyrna lewini
author Martins, Mariana F. [UNESP]
author_facet Martins, Mariana F. [UNESP]
Rolim, Fernanda A. [UNESP]
Gadig, Otto B. F. [UNESP]
author_role author
author2 Rolim, Fernanda A. [UNESP]
Gadig, Otto B. F. [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Univ Fed Rio Grande FURG
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Martins, Mariana F. [UNESP]
Rolim, Fernanda A. [UNESP]
Gadig, Otto B. F. [UNESP]
dc.subject.por.fl_str_mv Carcharhiniformes
embryo
hematic mummification
Sphyrnidae
umbilical torsion
topic Carcharhiniformes
embryo
hematic mummification
Sphyrnidae
umbilical torsion
description This study describes the fetal mummification process in two embryos of a 310 cm total length scalloped hammerhead shark Sphyrna lewini caught in southeastern Brazil, in December 2017. Fourteen embryos were observed in total, in which two males in the left uterus presented different stages of mummification. Both mummified embryos were covered by an exudate (i.e., a mucous substance), indicating a hematic mummification process. All embryos were at the placentotrophic stage of development, indicating that they were close to parturition. An intrinsic characteristic is suggested as possible etiology for this condition, such as umbilical torsion, because both embryos were at different sizes and, therefore, at different development stages. In addition, the sample size did not allow the authors to presume any pollution effect once only one female was observed. Finally, fetal mummification and other embryonic development disorders might have populational impacts due to reduction in embryo survival and, consequently, recruitment. For this reason and considering that S. lewini is categorized as a critically endangered species, this study's results have conservational relevance.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-10T19:59:25Z
2020-12-10T19:59:25Z
2020-05-20
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1111/jfb.14368
Journal Of Fish Biology. Hoboken: Wiley, v. 97, n. 1, p. 309-313, 2020.
0022-1112
http://hdl.handle.net/11449/196890
10.1111/jfb.14368
WOS:000533989400001
url http://dx.doi.org/10.1111/jfb.14368
http://hdl.handle.net/11449/196890
identifier_str_mv Journal Of Fish Biology. Hoboken: Wiley, v. 97, n. 1, p. 309-313, 2020.
0022-1112
10.1111/jfb.14368
WOS:000533989400001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Fish Biology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 309-313
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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