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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
15/12/2014 |
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Data da última atualização: |
15/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIVERO-WENDT, C. L. G.; BORGES, A. C.; OLIVEIRA FILHO, E. C. de; MIRANDA-VILELA, A. L.; FERREIRA, M. F. N.; GRISOLIA, C. K. |
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Afiliação: |
UNB; UNB; EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC; UNB; UNB; UNB. |
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Título: |
Effects of 17α-methyltestosterone on the reproduction of the freshwater snail Biomphalaria glabrata. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 13, n. 1, p. 605-615, 2014. |
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ISSN: |
1676-5680 |
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DOI: |
http://dx.doi.org/10.4238/2014.January.28.6 |
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Idioma: |
Inglês |
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Conteúdo: |
17-α-methyltestosterone (MT) is a synthetic hormone used in fish hatcheries to induce male monosex. Snails hold promise as possible test models to assess chemicals acting on the endocrine system. Biomphalaria glabrata is an aquatic gastropod mollusk (Pulmonata, Planorbidae) that can be easily maintained in aquaria, predisposing the species for use in ecotoxicological testing. This study evaluated the reproductive effects of MT on B. glabrata by examining histological changes and its reproductive performance. Ten snails per group were exposed for 4 weeks to different concentrations of MT (0.01, 0.1, and 1.0 mg/L). The total number of laid eggs, egg mass per group, size of type V oocytes, and production of spermatozoids were determined. Reproduction of B. glabrata was affected by MT. At the lowest concentration (0.01 mg/L), MT caused a statistically significant increase in the number of egg mass per snail compared with controls unexposed to MT. Histopathology analyses showed an increase in the sperm production at the higher MT concentrations of 0.1 and 1.0 mg/L. Chromatographic analyses of water samples showed that MT concentrations rapidly declined within a 96-h period. These results highlight the importance of giving more support to regulatory authorities, since MT is not registered for use on fish hatcheries in many countries around the world. Wastewater from fish farms discharged into aquatic ecosystems should be monitored for MT residues, since its presence could compromise the reproduction of other native snail species. Menos17-α-methyltestosterone (MT) is a synthetic hormone used in fish hatcheries to induce male monosex. Snails hold promise as possible test models to assess chemicals acting on the endocrine system. Biomphalaria glabrata is an aquatic gastropod mollusk (Pulmonata, Planorbidae) that can be easily maintained in aquaria, predisposing the species for use in ecotoxicological testing. This study evaluated the reproductive effects of MT on B. glabrata by examining histological changes and its reproductive performance. Ten snails per group were exposed for 4 weeks to different concentrations of MT (0.01, 0.1, and 1.0 mg/L). The total number of laid eggs, egg mass per group, size of type V oocytes, and production of spermatozoids were determined. Reproduction of B. glabrata was affected by MT. At the lowest concentration (0.01 mg/L), MT caused a statistically significant increase in the number of egg mass per snail compared with controls unexposed to MT. Histopathology analyses showed an increase in the sperm production at the higher MT concentrations of 0.1 and 1.0 mg/L. Chromatographic analyses of water samples showed that MT concentrations rapidly declined within a 96-h period. These results highlight the importance of giving more support to regulatory authorities, since MT is not registered for use on fish hatcheries in many countries around the world. Wastewater from fish farms discharged into aquatic ecosystems should be monitored for MT residues, since its presence could com... Mostrar Tudo |
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Palavras-Chave: |
Desreguladores endócrinos; Hormônio sintético; Performance reprodutiva. |
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Thesagro: |
Biomphalaria Glabrata; Histopatologia. |
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Thesaurus Nal: |
Endocrine-disrupting chemicals; Histopathology; Methyltestosterone; Reproductive performance; Synthetic hormones. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/113741/1/34253.pdf
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Marc: |
LEADER 02596naa a2200325 a 4500
001 2002535
005 2014-12-15
008 2014 bl uuuu u00u1 u #d
022 $a1676-5680
024 7 $ahttp://dx.doi.org/10.4238/2014.January.28.6$2DOI
100 1 $aRIVERO-WENDT, C. L. G.
245 $aEffects of 17α-methyltestosterone on the reproduction of the freshwater snail Biomphalaria glabrata.
260 $c2014
520 $a17-α-methyltestosterone (MT) is a synthetic hormone used in fish hatcheries to induce male monosex. Snails hold promise as possible test models to assess chemicals acting on the endocrine system. Biomphalaria glabrata is an aquatic gastropod mollusk (Pulmonata, Planorbidae) that can be easily maintained in aquaria, predisposing the species for use in ecotoxicological testing. This study evaluated the reproductive effects of MT on B. glabrata by examining histological changes and its reproductive performance. Ten snails per group were exposed for 4 weeks to different concentrations of MT (0.01, 0.1, and 1.0 mg/L). The total number of laid eggs, egg mass per group, size of type V oocytes, and production of spermatozoids were determined. Reproduction of B. glabrata was affected by MT. At the lowest concentration (0.01 mg/L), MT caused a statistically significant increase in the number of egg mass per snail compared with controls unexposed to MT. Histopathology analyses showed an increase in the sperm production at the higher MT concentrations of 0.1 and 1.0 mg/L. Chromatographic analyses of water samples showed that MT concentrations rapidly declined within a 96-h period. These results highlight the importance of giving more support to regulatory authorities, since MT is not registered for use on fish hatcheries in many countries around the world. Wastewater from fish farms discharged into aquatic ecosystems should be monitored for MT residues, since its presence could compromise the reproduction of other native snail species.
650 $aEndocrine-disrupting chemicals
650 $aHistopathology
650 $aMethyltestosterone
650 $aReproductive performance
650 $aSynthetic hormones
650 $aBiomphalaria Glabrata
650 $aHistopatologia
653 $aDesreguladores endócrinos
653 $aHormônio sintético
653 $aPerformance reprodutiva
700 1 $aBORGES, A. C.
700 1 $aOLIVEIRA FILHO, E. C. de
700 1 $aMIRANDA-VILELA, A. L.
700 1 $aFERREIRA, M. F. N.
700 1 $aGRISOLIA, C. K.
773 $tGenetics and Molecular Research$gv. 13, n. 1, p. 605-615, 2014.
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 10 | |
| 3. |  | ROMERO, C. H.; BACK, A.; ARNIZAUT, A. B. Desenvolvimento de antigenos e anticorpos contra o virus da enterite hemorragica em perus vacinadas com o virus do Baco Marmoreo dos faisoes. In: CONGRESSO LATINO-AMERICANO DE AVICULTURA, 8., 1983, Balneario Camboriu. Anais... Balneario Camboriu : UBA, 1983. v.2 p.553-566 CONGRESSO BRASILEIRO DE AVICULTURA, 8., 1983, Balneario Camboriu, SC.| Biblioteca(s): Embrapa Suínos e Aves. |
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| 4. | | BACK, A. J.; BRUNA, E. D.; VIEIRA, H. J. Tendências climáticas e produção de uva na região dos Vales da Uva Goethe. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 4, p. 497-504, abr. 2012 Título em inglês: Climate trends and production of grapes in the Region of Goethe Grape Valleys, Brazil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 5. | | RECH, D. V.; VAZ, C. S. L.; ALVES, L.; COLDEBELLA, A.; LEÃO. J. A.; RODRIGUES, D.; BACK, A. Caracterização fenotípica e genotípica de Salmonella spp. Isoladas de aviários de frangos de corte no Brasil entre 2009 e 2010. In: CONFERÊNCIA FACTA DE CIÊNCIA E TECNOLOGIA AVÍCOLAS, 2011, Santos, SP. Anais... Santos: FACTA, 2011. Trabalhos de Pesquisa José Maria Lamas da Silva. 1 CD-ROM. Projeto: 03.08.06.004.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 6. | | DENARDIN, J. E.; MARCON, G. P.; FAGANELLO, A.; LEMAINSKI, J.; BACK, A. J.; JUNQUEIRA, B. R.; OLIVEIRA, V. B. Validação hidrológica do "Camalhão Alto de Base Larga" como tecnologia conservacionista aplicada à cultura do tabaco. Passo Fundo, RS: Embrapa Trigo, set. 2020. (Embrapa Trigo. Documentos Online, 187)| Biblioteca(s): Embrapa Trigo. |
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| 8. | | RECH, D. V.; VAZ, C. S. L.; ALVES, L.; COLDEBELLA, A.; LEÃO, J. A.; RODRIGUES, D. dos P.; BACK, A. A temporal study of Salmonella enterica serotypes from broiler farms in Brazil. Poultry Science, v. 94, n. 3, p. 433-441, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 9. | | GRABIAS, J.; NOGUEIRA, A. C.; SANTOS, A. F. dos; REGO, G. M.; PEREIRA, C. R.; BELINOVSKI, C.; BACK, A. F.; SALOIO, N. R.; FRIZZO, C.; DUARTE, M. M. Influência do hipoclorito de sódio na germinação de sementes de Calophyllum brasiliense Cambess (Calophyllaceae). Informativo Abrates, v. 23, n. 2, 2013. Edição dos resumos do 18º Congresso Brasileiro de Sementes, 2013, Florianópolis. CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 10. | | TREVISOL, I. M.; CARON, L.; MORES, M. A. Z.; RECH, D. V.; ZANI, G. da S; BACK, A.; MARCHESI, J. A. P.; ESTEVES, P. A. Pathogenicity of GI-23 avian infectious bronchitis virus strain isolated in Brazil. Viruses, v. 15, n. 5, p. 1200, 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| Registros recuperados : 10 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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