Use of 17β-estradiol for leporinus macrocephalus feminization
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.20950/1678-2305.2020.46.2.547 http://hdl.handle.net/11449/206826 |
Resumo: | The aim of this study was to evaluate the effects of the use of a diet supplemented with 50 or 100 mg kg-1 17β-estradiol (E2 ) for Leporinus macrocephalus feminization. Thus, one hundred and fifty fingerlings with 50 days old post-hatch were randomly distributed in fifteen experimental tanks of 90 L and fed for 60 days on a diet supplemented with 50 or 100 mg kg-1 of E2 . At the end of the experiment, sex ratios were determined through histological and macroscopic observations. Histologically, the differentiated ovaries were evidenced by the presence of numerous nests of oogonia and oocytes in primary growth stage. The female ratio (77%) for the group treated with 100 mg kg-1 E2 was significantly higher than those of control (52%) and 50 mg kg-1 treatment (48%) groups. These results obtained in this initial study indicated that 100 mg kg-1 of E2, administered over 60 days, was the most effective treatment for 50 days old L. macrocephalus post larval feminization. However, future studies with variations in the application range can bring even better results. |
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Use of 17β-estradiol for leporinus macrocephalus feminizationUtilização de 17β-estradiol para feminização de leporinus macrocephalusAquaculture-speciesMonosex fish populationsNative fishSex inversionThe aim of this study was to evaluate the effects of the use of a diet supplemented with 50 or 100 mg kg-1 17β-estradiol (E2 ) for Leporinus macrocephalus feminization. Thus, one hundred and fifty fingerlings with 50 days old post-hatch were randomly distributed in fifteen experimental tanks of 90 L and fed for 60 days on a diet supplemented with 50 or 100 mg kg-1 of E2 . At the end of the experiment, sex ratios were determined through histological and macroscopic observations. Histologically, the differentiated ovaries were evidenced by the presence of numerous nests of oogonia and oocytes in primary growth stage. The female ratio (77%) for the group treated with 100 mg kg-1 E2 was significantly higher than those of control (52%) and 50 mg kg-1 treatment (48%) groups. These results obtained in this initial study indicated that 100 mg kg-1 of E2, administered over 60 days, was the most effective treatment for 50 days old L. macrocephalus post larval feminization. However, future studies with variations in the application range can bring even better results.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Centro Universitário de Rio Preto – UNIRP, Rua Ivete Gabriel Atique, 45FACERES, Avenida Anísio Haddad, 6751Universidade Estadual Paulista – UNESP Centro de Aquicultura da UNESP – CAUNESP, Via de Acesso Professor Paulo Donato Castellane, s/nUniversidade Estadual Paulista – UNESP Centro de Aquicultura da UNESP – CAUNESP, Via de Acesso Professor Paulo Donato Castellane, s/nFAPESP: 2010/08334-7Centro Universitário de Rio Preto – UNIRPFACERESUniversidade Estadual Paulista (Unesp)Pereira, Thiago Scremin BoscoloBoscolo, Camila Nomura PereiraBatlouni, Sergio Ricardo [UNESP]2021-06-25T10:44:30Z2021-06-25T10:44:30Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-7http://dx.doi.org/10.20950/1678-2305.2020.46.2.547Boletim do Instituto de Pesca, v. 46, n. 2, p. 1-7, 2020.0046-99391678-2305http://hdl.handle.net/11449/20682610.20950/1678-2305.2020.46.2.5472-s2.0-85096026080Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBoletim do Instituto de Pescainfo:eu-repo/semantics/openAccess2024-04-09T15:30:07Zoai:repositorio.unesp.br:11449/206826Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-09T15:30:07Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Use of 17β-estradiol for leporinus macrocephalus feminization Utilização de 17β-estradiol para feminização de leporinus macrocephalus |
title |
Use of 17β-estradiol for leporinus macrocephalus feminization |
spellingShingle |
Use of 17β-estradiol for leporinus macrocephalus feminization Pereira, Thiago Scremin Boscolo Aquaculture-species Monosex fish populations Native fish Sex inversion |
title_short |
Use of 17β-estradiol for leporinus macrocephalus feminization |
title_full |
Use of 17β-estradiol for leporinus macrocephalus feminization |
title_fullStr |
Use of 17β-estradiol for leporinus macrocephalus feminization |
title_full_unstemmed |
Use of 17β-estradiol for leporinus macrocephalus feminization |
title_sort |
Use of 17β-estradiol for leporinus macrocephalus feminization |
author |
Pereira, Thiago Scremin Boscolo |
author_facet |
Pereira, Thiago Scremin Boscolo Boscolo, Camila Nomura Pereira Batlouni, Sergio Ricardo [UNESP] |
author_role |
author |
author2 |
Boscolo, Camila Nomura Pereira Batlouni, Sergio Ricardo [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Centro Universitário de Rio Preto – UNIRP FACERES Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Pereira, Thiago Scremin Boscolo Boscolo, Camila Nomura Pereira Batlouni, Sergio Ricardo [UNESP] |
dc.subject.por.fl_str_mv |
Aquaculture-species Monosex fish populations Native fish Sex inversion |
topic |
Aquaculture-species Monosex fish populations Native fish Sex inversion |
description |
The aim of this study was to evaluate the effects of the use of a diet supplemented with 50 or 100 mg kg-1 17β-estradiol (E2 ) for Leporinus macrocephalus feminization. Thus, one hundred and fifty fingerlings with 50 days old post-hatch were randomly distributed in fifteen experimental tanks of 90 L and fed for 60 days on a diet supplemented with 50 or 100 mg kg-1 of E2 . At the end of the experiment, sex ratios were determined through histological and macroscopic observations. Histologically, the differentiated ovaries were evidenced by the presence of numerous nests of oogonia and oocytes in primary growth stage. The female ratio (77%) for the group treated with 100 mg kg-1 E2 was significantly higher than those of control (52%) and 50 mg kg-1 treatment (48%) groups. These results obtained in this initial study indicated that 100 mg kg-1 of E2, administered over 60 days, was the most effective treatment for 50 days old L. macrocephalus post larval feminization. However, future studies with variations in the application range can bring even better results. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 2021-06-25T10:44:30Z 2021-06-25T10:44:30Z |
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/10.20950/1678-2305.2020.46.2.547 Boletim do Instituto de Pesca, v. 46, n. 2, p. 1-7, 2020. 0046-9939 1678-2305 http://hdl.handle.net/11449/206826 10.20950/1678-2305.2020.46.2.547 2-s2.0-85096026080 |
url |
http://dx.doi.org/10.20950/1678-2305.2020.46.2.547 http://hdl.handle.net/11449/206826 |
identifier_str_mv |
Boletim do Instituto de Pesca, v. 46, n. 2, p. 1-7, 2020. 0046-9939 1678-2305 10.20950/1678-2305.2020.46.2.547 2-s2.0-85096026080 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Boletim do Instituto de Pesca |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-7 |
dc.source.none.fl_str_mv |
Scopus 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 |
|
_version_ |
1803046706249465856 |