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Registro Completo |
Biblioteca(s): |
Embrapa Acre; Embrapa Amazônia Oriental; Embrapa Florestas. |
Data corrente: |
26/08/2011 |
Data da última atualização: |
24/03/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CARNEIRO, F. S.; LACERDA, A. E. B. de; LEMES, M. R.; GRIBEL, R.; KANASHIRO, M.; WADT, L. H. O.; SEBBENN, A. M. |
Afiliação: |
F. S. Carneiro, UNESP; ANDRE EDUARDO BISCAIA DE LACERDA, CNPF; M. R. Lemes, INPA; R. Gribel, INPA; MILTON KANASHIRO, CPATU; LUCIA HELENA DE OLIVEIRA WADT, CPAF-AC; A. M. Sebbenn, Instituto Florestal de São Paulo. |
Título: |
Effects of selective logging on the mating system and pollen dispersal of Hymenaea courbaril L. (Leguminosae) in the Eastern Brazilian Amazon as revealed by microsatellite analysis. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Forest Ecology and Management, V. 262, p. 1758-1765, 2011. |
DOI: |
10.1016/j.foreco.2011.07.023 |
Idioma: |
Inglês |
Conteúdo: |
Using nine microsatellite loci, we studied the effects of selective logging on genetic diversity, mating system and pollen dispersal in a population of the tree species Hymenaea courbaril, located in a 546 ha plot in the Tapajós National Forest, Pará State, Brazil. We analyzed 250 offspring (nursery reared seedlings) collected after a logging episode from 14 open-pollinated seed trees. These were compared to 367 seedlings from 20 open-pollinated seed trees previously collected from the pre-logging primary forest. The genetic diversity was significantly lower in the post-logging seed cohort. In contrast to the pre-logging population, significant levels of selfing were detected in the post-logging population (tm = 0.962, P < 0.05). However, correlated matings were reduced and the effective number of pollen donors almost doubled after harvesting (3.8 against 7.2). Logging also reduced pollen immigration into the plot (from 55% to 38%) and we found no significant correlation between the size of the pollen donors and the number of seeds fathered. Inside the plot, pollen dispersal distance was shorter before logging than after (827 and 952 m, respectively) and the reproductive pollination neighbor area (Aep) was larger (average of 178 ha). The individual and average variance effective population size within families (ranged from 1.80 to 3.21, average of 2.47) was lower than expected in panmictic populations (Ne = 4). The results indicate that while logging greatly reduced the levels of genetic diversity after logging, it also increased genetic recombination within the population and constrained crossing among related individuals. The results show that low-density tropical tree species such as H. courbaril, when harvested in moderate levels may be resilient to a reduction in the reproductive population and may maintain similar levels of outcrossing and pollen dispersal after logging. MenosUsing nine microsatellite loci, we studied the effects of selective logging on genetic diversity, mating system and pollen dispersal in a population of the tree species Hymenaea courbaril, located in a 546 ha plot in the Tapajós National Forest, Pará State, Brazil. We analyzed 250 offspring (nursery reared seedlings) collected after a logging episode from 14 open-pollinated seed trees. These were compared to 367 seedlings from 20 open-pollinated seed trees previously collected from the pre-logging primary forest. The genetic diversity was significantly lower in the post-logging seed cohort. In contrast to the pre-logging population, significant levels of selfing were detected in the post-logging population (tm = 0.962, P < 0.05). However, correlated matings were reduced and the effective number of pollen donors almost doubled after harvesting (3.8 against 7.2). Logging also reduced pollen immigration into the plot (from 55% to 38%) and we found no significant correlation between the size of the pollen donors and the number of seeds fathered. Inside the plot, pollen dispersal distance was shorter before logging than after (827 and 952 m, respectively) and the reproductive pollination neighbor area (Aep) was larger (average of 178 ha). The individual and average variance effective population size within families (ranged from 1.80 to 3.21, average of 2.47) was lower than expected in panmictic populations (Ne = 4). The results indicate that while logging greatly reduced the leve... Mostrar Tudo |
Palavras-Chave: |
Amazônia Oriental; Atividade madeireira; Cruce; Eastern Amazon; Floresta Nacional do Tapajós (PA); Flujo de polen; Madera tropical; Manejo florestal seletivo; Marcador microssatélite; Marcadores genéticos; Pará; Pollen dispersal; Reduced impact logging; SSR loci; Tropical; Tropical tree; Variación genética. |
Thesagro: |
Árvore; Cruzamento; Dispersão; Essência florestal; Hymenaea courbaril; Jatobá; Marcador genético; Pólen; Variação genética. |
Thesaurus Nal: |
Amazonia; gene flow; Genetic markers; Genetic variation; Pollen flow; Tropical wood. |
Categoria do assunto: |
-- F Plantas e Produtos de Origem Vegetal K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 03650naa a2200589 a 4500 001 1906211 005 2015-03-24 008 2011 bl uuuu u00u1 u #d 024 7 $a10.1016/j.foreco.2011.07.023$2DOI 100 1 $aCARNEIRO, F. S. 245 $aEffects of selective logging on the mating system and pollen dispersal of Hymenaea courbaril L. (Leguminosae) in the Eastern Brazilian Amazon as revealed by microsatellite analysis.$h[electronic resource] 260 $c2011 520 $aUsing nine microsatellite loci, we studied the effects of selective logging on genetic diversity, mating system and pollen dispersal in a population of the tree species Hymenaea courbaril, located in a 546 ha plot in the Tapajós National Forest, Pará State, Brazil. We analyzed 250 offspring (nursery reared seedlings) collected after a logging episode from 14 open-pollinated seed trees. These were compared to 367 seedlings from 20 open-pollinated seed trees previously collected from the pre-logging primary forest. The genetic diversity was significantly lower in the post-logging seed cohort. In contrast to the pre-logging population, significant levels of selfing were detected in the post-logging population (tm = 0.962, P < 0.05). However, correlated matings were reduced and the effective number of pollen donors almost doubled after harvesting (3.8 against 7.2). Logging also reduced pollen immigration into the plot (from 55% to 38%) and we found no significant correlation between the size of the pollen donors and the number of seeds fathered. Inside the plot, pollen dispersal distance was shorter before logging than after (827 and 952 m, respectively) and the reproductive pollination neighbor area (Aep) was larger (average of 178 ha). The individual and average variance effective population size within families (ranged from 1.80 to 3.21, average of 2.47) was lower than expected in panmictic populations (Ne = 4). The results indicate that while logging greatly reduced the levels of genetic diversity after logging, it also increased genetic recombination within the population and constrained crossing among related individuals. The results show that low-density tropical tree species such as H. courbaril, when harvested in moderate levels may be resilient to a reduction in the reproductive population and may maintain similar levels of outcrossing and pollen dispersal after logging. 650 $aAmazonia 650 $agene flow 650 $aGenetic markers 650 $aGenetic variation 650 $aPollen flow 650 $aTropical wood 650 $aÁrvore 650 $aCruzamento 650 $aDispersão 650 $aEssência florestal 650 $aHymenaea courbaril 650 $aJatobá 650 $aMarcador genético 650 $aPólen 650 $aVariação genética 653 $aAmazônia Oriental 653 $aAtividade madeireira 653 $aCruce 653 $aEastern Amazon 653 $aFloresta Nacional do Tapajós (PA) 653 $aFlujo de polen 653 $aMadera tropical 653 $aManejo florestal seletivo 653 $aMarcador microssatélite 653 $aMarcadores genéticos 653 $aPará 653 $aPollen dispersal 653 $aReduced impact logging 653 $aSSR loci 653 $aTropical 653 $aTropical tree 653 $aVariación genética 700 1 $aLACERDA, A. E. B. de 700 1 $aLEMES, M. R. 700 1 $aGRIBEL, R. 700 1 $aKANASHIRO, M. 700 1 $aWADT, L. H. O. 700 1 $aSEBBENN, A. M. 773 $tForest Ecology and Management, V. 262, p. 1758-1765, 2011.
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Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
18/12/2012 |
Data da última atualização: |
10/04/2024 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
LOPES, F. C. F.; MOURTHE, M. H. F.; REIS, R. B.; GAMA, M. A. S. da; BARROS, P. A. V. DE; ALEVATO, C. B.; MOREIRA, E. DE A.; ALMEIDA, M. M. DE. |
Afiliação: |
FERNANDO CESAR FERRAZ LOPES, CNPGL; MARIO HENRIQUE FRANÇA MOURTHE, UNIVERSIDADE FEDERAL DOS VALES DO JEQUITINHONHA E MUCURI; RONALDO BRAGA REIS, UNIVERSIDADE FEDERAL DE MINAS GERAIS; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; PATRICIA APARECIDA VIEIRA DE BARROS, UNIVERSIDADE FEDERAL DE MINAS GERAIS; CAROLINA BANNI ALEVATO; ELLEN DE ALMEIDA MOREIRA; MARIANA MACEDO DE ALMEIDA, UNIVERSIDADE FEDERAL DE JUIZ DE FORA. |
Título: |
Indices de qualidade nutricional da gordura do leite de vacas Holandês x Gir em pastagem de capim-Marandu suplementado com quantidades crescentes de grão de soja tostado. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
In: CONGRESSO INTERNACIONAL DO LEITE, 11.; WORKSHOP DE POLÍTICAS PÚBLICAS, 11.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 12., 2012, Goiânia. Anais... Juiz de Fora: Embrapa Gado de Leite, 2012. |
Idioma: |
Português |
Palavras-Chave: |
Colesterolemia; Indice de aterogenicidade; Indice de trombogenecidade; Tostagem. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/942899/1/Indices-de-qualidade-nutricional-da-gordura-do-leite-de-vacas-Holandes-x-Gir.pdf
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Marc: |
LEADER 00961nam a2200229 a 4500 001 1942899 005 2024-04-10 008 2012 bl uuuu u00u1 u #d 100 1 $aLOPES, F. C. F. 245 $aIndices de qualidade nutricional da gordura do leite de vacas Holandês x Gir em pastagem de capim-Marandu suplementado com quantidades crescentes de grão de soja tostado.$h[electronic resource] 260 $aIn: CONGRESSO INTERNACIONAL DO LEITE, 11.; WORKSHOP DE POLÍTICAS PÚBLICAS, 11.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 12., 2012, Goiânia. Anais... Juiz de Fora: Embrapa Gado de Leite$c2012 653 $aColesterolemia 653 $aIndice de aterogenicidade 653 $aIndice de trombogenecidade 653 $aTostagem 700 1 $aMOURTHE, M. H. F. 700 1 $aREIS, R. B. 700 1 $aGAMA, M. A. S. da 700 1 $aBARROS, P. A. V. DE 700 1 $aALEVATO, C. B. 700 1 $aMOREIRA, E. DE A. 700 1 $aALMEIDA, M. M. DE
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