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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
13/05/2010 |
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Data da última atualização: |
18/04/2018 |
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Autoria: |
RODRIGUEZ-RODRIGUEZ, M. del P.; LOPERA-BARRERO, N. M.; RIBEIRO, R. P.; POVH, J. A.; VARGAS, L.; SIROL, R. N.; JACOMETO, C. B. |
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Afiliação: |
Maria del Pilar Rodriguez-Rodriguez, Universidade Estadual de Maringá/Departamento de Zootecnia/Núcleo de Pesquisa PeixeGen; Nelson Mauricio Lopera-Barrero, Universidade Estadual de Maringá/Departamento de Zootecnia/Núcleo de Pesquisa PeixeGen; Ricardo Pereira Ribeiro, Universidade Estadual de Maringá/Departamento de Zootecnia/Núcleo de Pesquisa PeixeGen; Jayme Aparecido Povh, Universidade Federal de Mato Grosso/Instituto de Ciências Agrárias e Tecnológica; Lauro Vargas, Universidade Estadual de Maringá/Departamento de Zootecnia/Núcleo de Pesquisa PeixeGen; Rodolfo Nardez Sirol, Companhia Paulista de Força e Luz – Geração; Carolina Bespalhok Jacometo, Universidade Estadual de Maringá/Departamento de Zootecnia/Núcleo de Pesquisa PeixeGen. |
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Título: |
Diversidad genética de piracanjuba usada en programas de repoblación con marcadores microsatélites. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 1, p. 56-63, jan. 2010. |
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Idioma: |
Espanhol |
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Notas: |
Título em inglês: Genetic diversity of piracanjuba used in stock enhancement programs with microsatellite markers. |
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Conteúdo: |
Resumen: El objetivo de este trabajo fue estimar la diversidad genética de un lote de Brycon orbignyanus usado en programas de repoblación, a través de marcadores microsatélites. Se analizaron muestras de 44 reproductores, de 70 larvas y de 69 alevinos, con la amplificación de cinco loci descritos para Brycon opalinus. El número de alelos, la heterozigosidad observada (Ho) y esperada (He), el índice de Shannon (IS), la diversidad genética de Nei (DGN), el coeficiente de endogamia (Fis), la distancia (DG) e identidad genética (IG), el número efectivo de alelos, el test del equilibrio de Hardy-Weinberg (EHW) y el desequilibrio de ligación fueron calculados. Reproductores y progenie tuvieron un número similar de alelos en los loci evaluados. La Ho media, IS, DGN, DG e IG mostraron que existe menor distancia genética entre parentales y larvas y una disminución de variabilidad genética en los alevinos. Fueron observados desvíos en EHW y desequilibrio de ligación en seis pares de loci. El Fis mostró exceso de heterocigotos en parentales y larvas y déficit de heterocigotos en los alevinos. El lote de reproductores está en proceso de pérdida de alelos y hubo disminución de la variabilidad genética entre la fase de larva y alevino. |
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Palavras-Chave: |
Genética de la conservación; Manejo reproductivo; Variabilidad genética. |
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Thesagro: |
Alevino; Brycon Orbignyanus; Larva. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/105936/1/Diversidad-genetica.pdf
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Marc: |
LEADER 02211naa a2200277 a 4500
001 1783616
005 2018-04-18
008 2010 bl uuuu u00u1 u #d
100 1 $aRODRIGUEZ-RODRIGUEZ, M. del P.
245 $aDiversidad genética de piracanjuba usada en programas de repoblación con marcadores microsatélites.
260 $c2010
500 $aTítulo em inglês: Genetic diversity of piracanjuba used in stock enhancement programs with microsatellite markers.
520 $aResumen: El objetivo de este trabajo fue estimar la diversidad genética de un lote de Brycon orbignyanus usado en programas de repoblación, a través de marcadores microsatélites. Se analizaron muestras de 44 reproductores, de 70 larvas y de 69 alevinos, con la amplificación de cinco loci descritos para Brycon opalinus. El número de alelos, la heterozigosidad observada (Ho) y esperada (He), el índice de Shannon (IS), la diversidad genética de Nei (DGN), el coeficiente de endogamia (Fis), la distancia (DG) e identidad genética (IG), el número efectivo de alelos, el test del equilibrio de Hardy-Weinberg (EHW) y el desequilibrio de ligación fueron calculados. Reproductores y progenie tuvieron un número similar de alelos en los loci evaluados. La Ho media, IS, DGN, DG e IG mostraron que existe menor distancia genética entre parentales y larvas y una disminución de variabilidad genética en los alevinos. Fueron observados desvíos en EHW y desequilibrio de ligación en seis pares de loci. El Fis mostró exceso de heterocigotos en parentales y larvas y déficit de heterocigotos en los alevinos. El lote de reproductores está en proceso de pérdida de alelos y hubo disminución de la variabilidad genética entre la fase de larva y alevino.
650 $aAlevino
650 $aBrycon Orbignyanus
650 $aLarva
653 $aGenética de la conservación
653 $aManejo reproductivo
653 $aVariabilidad genética
700 1 $aLOPERA-BARRERO, N. M.
700 1 $aRIBEIRO, R. P.
700 1 $aPOVH, J. A.
700 1 $aVARGAS, L.
700 1 $aSIROL, R. N.
700 1 $aJACOMETO, C. B.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 45, n. 1, p. 56-63, jan. 2010.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/04/2024 |
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Data da última atualização: |
11/04/2024 |
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Autoria: |
ADUAN, R. E.; KLINK, C. A.; DAVIDSON, E. A. |
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Afiliação: |
ROBERTO ENGEL ADUAN, CPAC; CARLOS AUGUSTO KLINK, UNIVERSIDADE DE BRASÍLIA; ERIC ATLAS DAVIDSON, THE WOODS HOLE RESEARCH CENTER. |
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Título: |
Soil respiration in native Cerrado and a pasture in Central Brazil: Seasonal variation and deep soil contribution on total flux. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
Soil respiration is perhaps one of the most important in the many different processes of the carbon cycling in natural and cultivated ecosystems. The aim of this study was to measure intensively the soil respiration fluxes in two native Cerrado vegetation types, that differ in tree density (cerrado denso and cerrado stricto sensu) and one planted pasture, measuring total annual fluxes and their seasonal variation. The effect of environmental variables (temperature and rainfall) and the role of deep soil on superficial emissions were also assessed. The native Cerrado ecosystems are located in the Reserva Ecológica do Roncador (RECOR/IBGE), in Brasília, DF, Brazil, while the planted pasture (Brachiaria brizantha) is located in the experimental fields of Embrapa-Cerrados, in Planaltina, DF, Brazil. Soil respiration was measured with the dynamic chamber IRGA technique. Deep soil fluxes were estimated from soil atmosphere samples taken at different depths, and the CO2 flux on each soil layer was calculated using a gas diffusivity model. The total annual emissions were greater in the pasture, with sharper seasonal variation when compared to the native ecosystems, which were very similar. For all ecosystems, fluxes were closely correlated with soil temperature, and with cumulative precipitation in different timescales. In all three ecosystems (for several occasions), we found a significant CO2 production in the deeper layers of the soil, especially in the depth of 75-100 cm. |
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Thesaurus NAL: |
Pastures; Soil respiration. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163504/1/Soil-respiration-in-native-Cerrado.pdf
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Marc: |
LEADER 02082nam a2200157 a 4500
001 2163504
005 2024-04-11
008 2004 bl uuuu u00u1 u #d
100 1 $aADUAN, R. E.
245 $aSoil respiration in native Cerrado and a pasture in Central Brazil$bSeasonal variation and deep soil contribution on total flux.$h[electronic resource]
260 $aIn: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA$c2004
520 $aSoil respiration is perhaps one of the most important in the many different processes of the carbon cycling in natural and cultivated ecosystems. The aim of this study was to measure intensively the soil respiration fluxes in two native Cerrado vegetation types, that differ in tree density (cerrado denso and cerrado stricto sensu) and one planted pasture, measuring total annual fluxes and their seasonal variation. The effect of environmental variables (temperature and rainfall) and the role of deep soil on superficial emissions were also assessed. The native Cerrado ecosystems are located in the Reserva Ecológica do Roncador (RECOR/IBGE), in Brasília, DF, Brazil, while the planted pasture (Brachiaria brizantha) is located in the experimental fields of Embrapa-Cerrados, in Planaltina, DF, Brazil. Soil respiration was measured with the dynamic chamber IRGA technique. Deep soil fluxes were estimated from soil atmosphere samples taken at different depths, and the CO2 flux on each soil layer was calculated using a gas diffusivity model. The total annual emissions were greater in the pasture, with sharper seasonal variation when compared to the native ecosystems, which were very similar. For all ecosystems, fluxes were closely correlated with soil temperature, and with cumulative precipitation in different timescales. In all three ecosystems (for several occasions), we found a significant CO2 production in the deeper layers of the soil, especially in the depth of 75-100 cm.
650 $aPastures
650 $aSoil respiration
700 1 $aKLINK, C. A.
700 1 $aDAVIDSON, E. A.
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