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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
22/07/1998 |
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Data da última atualização: |
28/03/2017 |
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Autoria: |
ALI, I. B.; JOIRIS, C. R.; HOLSBEEK, L. |
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Título: |
Total and organic mercury in the starfish Ctenodiscus cripatus and the polychaete Maldanes sarsi from the Barents Sea. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Science of the Total Environment, v.201, n.3, p.189-194, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
Total and organic mercury concentrations were measured in starfish (n=116) and in polychaetes (n=30) as a part of a broader ecotoxicological study of the Barents Sea. Total mercury concentrations in starfish from the open sea was similar in both Artic (0.2 ug/g dry wt.) and Atlantic (0.2 ug/g dry wt.) water masses but was higher in the samples from the coast of Novaya Zemlya (0.3 ug/g dry wt.). Though there was no difference in total mercury concentrations between polychaete and starfish from the coast, there was a difference in speciation: the polychaetes had a higher percentage of methyl mercury (100%) compared to the starfish (3%). Total mercury concentration in these Barents Sea benthic invertebrates (0.25 ug/g dry wt.) was higher than in pelagic fish (0.07 ug/g dry wt.) but similar to demersal fish and particulate matter (0.25 ug/g dry wt.). They were all considered as clone to prisine values. |
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Palavras-Chave: |
Ctenodiscus crispatus; Estrela do mar; Maldanes sarsi; Mar de Barent; Poliqueta; Polychaete; Starfish. |
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Thesagro: |
Mercúrio. |
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Thesaurus Nal: |
Barents Sea; mercury. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01657naa a2200265 a 4500
001 1792757
005 2017-03-28
008 1997 bl --- 0-- u #d
100 1 $aALI, I. B.
245 $aTotal and organic mercury in the starfish Ctenodiscus cripatus and the polychaete Maldanes sarsi from the Barents Sea.
260 $c1997
520 $aTotal and organic mercury concentrations were measured in starfish (n=116) and in polychaetes (n=30) as a part of a broader ecotoxicological study of the Barents Sea. Total mercury concentrations in starfish from the open sea was similar in both Artic (0.2 ug/g dry wt.) and Atlantic (0.2 ug/g dry wt.) water masses but was higher in the samples from the coast of Novaya Zemlya (0.3 ug/g dry wt.). Though there was no difference in total mercury concentrations between polychaete and starfish from the coast, there was a difference in speciation: the polychaetes had a higher percentage of methyl mercury (100%) compared to the starfish (3%). Total mercury concentration in these Barents Sea benthic invertebrates (0.25 ug/g dry wt.) was higher than in pelagic fish (0.07 ug/g dry wt.) but similar to demersal fish and particulate matter (0.25 ug/g dry wt.). They were all considered as clone to prisine values.
650 $aBarents Sea
650 $amercury
650 $aMercúrio
653 $aCtenodiscus crispatus
653 $aEstrela do mar
653 $aMaldanes sarsi
653 $aMar de Barent
653 $aPoliqueta
653 $aPolychaete
653 $aStarfish
700 1 $aJOIRIS, C. R.
700 1 $aHOLSBEEK, L.
773 $tScience of the Total Environment$gv.201, n.3, p.189-194, 1997.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
16/01/2008 |
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Data da última atualização: |
18/04/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
SILVA, S. A. da; SOUZA, P. I. de M. de; VIANNA, G. R.; LEONARDECZ, E.; MOREIRA, C. T.; FALEIRO, F. G.; NUNES JÚNIOR, J.; MONTEIRO, P. M. F. O.; RECH FILHO, E. L.; ARAGÃO, F. J. L. |
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Afiliação: |
SERGIO ABUD DA SILVA, CPAC; PLINIO ITAMAR DE MELLO DE SOUZA, CPAC; GIOVANNI RODRIGUES VIANNA, CENARGEN; E. LEONARDECZ, UNIVERSIDADE CATÓLICA DE BRASÍLIA; CLAUDETE TEIXEIRA MOREIRA, CPAC; FABIO GELAPE FALEIRO, CPAC; J. NUNES JÚNIOR, CENTRO TECNOLÓGICO PARA PESQUISAS AGROPECUÁRIAS; P. M. F. O. MONTEIRO; ELIBIO LEOPOLDO RECH FILHO, CENARGEN; FRANCISCO JOSE LIMA ARAGAO, CENARGEN. |
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Título: |
Gene flow from transgenic to nontransgenic soybean plants in the Cerrado region of Brazil. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 6, n. 2, p. 345-352, 2007. |
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ISSN: |
1676-5680 |
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Idioma: |
Inglês |
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Conteúdo: |
Evaluation of transgenic crops under field conditions is a fundamental step for the production of genetically engineered varieties. In order to determine if there is pollen dispersal from transgenic to nontransgenic soybean plants, a field release experiment was conducted in the Cerrado region of Brazil. Nontransgenic plants were cultivated in plots surrounding Roundup Ready transgenic plants carrying the cp4 epsps gene, which confers herbicide tolerance against glyphosate herbicide, and pollen dispersal was evaluated by checking for the dominant gene. The percentage of cross-pollination was calculated as a fraction of herbicide-tolerant and -nontolerant plants. The greatest amount of transgenic pollen dispersion was observed in the first row, located at one meter from the central (transgenic) plot, with a 0.52% average frequendecy. The frequency of pollen dispersion decreased to 0.12% in row 2, reaching 0% when the plants were up to 10 m distance from the central plot. Under these conditions pollen flow was higher for a short distance. This fact suggests that the management necessary to avoid cross-pollination from transgenic to nontransgenic plants in the seed production fields should be similar to the procedures currently utilized to produce commercial seeds. |
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Palavras-Chave: |
Transgênico. |
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Thesagro: |
Cerrado; Genética Vegetal; Glycine Max; Planta Transgênica; Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02159naa a2200313 a 4500
001 1566764
005 2024-04-18
008 2007 bl uuuu u00u1 u #d
022 $a1676-5680
100 1 $aSILVA, S. A. da
245 $aGene flow from transgenic to nontransgenic soybean plants in the Cerrado region of Brazil.
260 $c2007
520 $aEvaluation of transgenic crops under field conditions is a fundamental step for the production of genetically engineered varieties. In order to determine if there is pollen dispersal from transgenic to nontransgenic soybean plants, a field release experiment was conducted in the Cerrado region of Brazil. Nontransgenic plants were cultivated in plots surrounding Roundup Ready transgenic plants carrying the cp4 epsps gene, which confers herbicide tolerance against glyphosate herbicide, and pollen dispersal was evaluated by checking for the dominant gene. The percentage of cross-pollination was calculated as a fraction of herbicide-tolerant and -nontolerant plants. The greatest amount of transgenic pollen dispersion was observed in the first row, located at one meter from the central (transgenic) plot, with a 0.52% average frequendecy. The frequency of pollen dispersion decreased to 0.12% in row 2, reaching 0% when the plants were up to 10 m distance from the central plot. Under these conditions pollen flow was higher for a short distance. This fact suggests that the management necessary to avoid cross-pollination from transgenic to nontransgenic plants in the seed production fields should be similar to the procedures currently utilized to produce commercial seeds.
650 $aCerrado
650 $aGenética Vegetal
650 $aGlycine Max
650 $aPlanta Transgênica
650 $aSoja
653 $aTransgênico
700 1 $aSOUZA, P. I. de M. de
700 1 $aVIANNA, G. R.
700 1 $aLEONARDECZ, E.
700 1 $aMOREIRA, C. T.
700 1 $aFALEIRO, F. G.
700 1 $aNUNES JÚNIOR, J.
700 1 $aMONTEIRO, P. M. F. O.
700 1 $aRECH FILHO, E. L.
700 1 $aARAGÃO, F. J. L.
773 $tGenetics and Molecular Research$gv. 6, n. 2, p. 345-352, 2007.
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