| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
21/08/2008 |
|
Data da última atualização: |
06/04/2009 |
|
Autoria: |
MARTINS, P. T.; NUNES, D. H.; PASINI, A.; MOTTE, B.; SANTOS, A. A. dos; SILVA, S. H. da; BROWN, G. G. |
|
Título: |
Efficiency of electroshocking and formol extraction of earthworms compared to handsorting in agricultural and natural ecosystems near Londrina, Brazil. |
|
Ano de publicação: |
2006 |
|
Fonte/Imprenta: |
In: International Symposium on Earthworm Ecology, 8., 2006, Kraków. Abstracts... Kraków: Jagiellonian University, 2006. p. 76. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Sampling of earthworms is generally a labor intensive and time-consuming activity and means of reducing the time and effort necessary to sample earthworm populations are always welcome. Therefore, in the present study, we compared the efficiency of two "quicker" and "easier" alternatives (electro-shocking and dilute-formalin expulsion) in relation to the traditional hand-sorting method. Sampling was performed in four ecosystems: 1) Native forest (secondary vegetation); 2) edge of a cattail marsh; 3) sorghum croppìng (after harvest); and 4) a >10 yr old Cynodon spp. pasture grazed by horses. Electro-shocking (Thielemann octet method) was performed over an area of approximately 0.4 m2 for 20 min and immediately thereafter, earthworms were handsorted from 0.16 m2 soil monoliths, to a depth of 30 cm, directly underneath the electro-shocked area. Formalin (0.5%) was applied to a 1 m2 area, 5-m away, and the surfacing earthworms collected. Eight samples were taken in the forest and the marsh and 5 samples were taken in the agroecosystems. Earthworms were killed in alcohol (30%) and then fixed in formalin. All individuals collected with each method were counted (separately into age classes), weighed and identified to species level (when possible). Earthworm diversity was always higher with the handsorting method (forest = 8 spp., crop system = 6 spp., swamp = 3 spp., pasture = 2 spp.). Formol and electro-shocking yielded at most 3 species only, generally the fastermoving epigeics and poly-humic endogeics. Amynthas gracilis and Urobenus brasiliensis predominated in the forest, Pontoscolex corethrurus dominated in the marsh and various Dichogaster spp. dominated in the agroecosystems. Earthworm abundance was highest in the cropping system, followed by the forest, swamp and pasture. Efficiency of the sample methods depended on the ecosystem, the species and the measurement in question. At all sites, electro-shocking yielded the fewest earthworms, and the extraction efficiency, was generally low for the total earthworm population: from 0% in the pasture, where the soil was compact and drier, to around 20-30% in the remaining ecosystems. Formalin expulsion was also less efficient than handsorting (10-25%), except in the forest, where it yielded 5 times as many earthworms, primarily due to its efficient sampling of Amynthas and Urobenus spp. Electro-shocking and formalin appear to be interesting methods to sample mostly large, surface-active earthworms, whereas handsorting appears to be better suited for smaller, mostly endogeic earthworm species. Ideally, a combination of both methods should be attempted, to adequately sample both large and faster moving earthworms often missed by handsorting, and smaller, endogeic earthworms, not adequately sampled with formol or electricity. MenosSampling of earthworms is generally a labor intensive and time-consuming activity and means of reducing the time and effort necessary to sample earthworm populations are always welcome. Therefore, in the present study, we compared the efficiency of two "quicker" and "easier" alternatives (electro-shocking and dilute-formalin expulsion) in relation to the traditional hand-sorting method. Sampling was performed in four ecosystems: 1) Native forest (secondary vegetation); 2) edge of a cattail marsh; 3) sorghum croppìng (after harvest); and 4) a >10 yr old Cynodon spp. pasture grazed by horses. Electro-shocking (Thielemann octet method) was performed over an area of approximately 0.4 m2 for 20 min and immediately thereafter, earthworms were handsorted from 0.16 m2 soil monoliths, to a depth of 30 cm, directly underneath the electro-shocked area. Formalin (0.5%) was applied to a 1 m2 area, 5-m away, and the surfacing earthworms collected. Eight samples were taken in the forest and the marsh and 5 samples were taken in the agroecosystems. Earthworms were killed in alcohol (30%) and then fixed in formalin. All individuals collected with each method were counted (separately into age classes), weighed and identified to species level (when possible). Earthworm diversity was always higher with the handsorting method (forest = 8 spp., crop system = 6 spp., swamp = 3 spp., pasture = 2 spp.). Formol and electro-shocking yielded at most 3 species only, generally the fastermoving epigeics a... Mostrar Tudo |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 03499naa a2200193 a 4500
001 1470763
005 2009-04-06
008 2006 bl --- 0-- u #d
100 1 $aMARTINS, P. T.
245 $aEfficiency of electroshocking and formol extraction of earthworms compared to handsorting in agricultural and natural ecosystems near Londrina, Brazil.
260 $c2006
520 $aSampling of earthworms is generally a labor intensive and time-consuming activity and means of reducing the time and effort necessary to sample earthworm populations are always welcome. Therefore, in the present study, we compared the efficiency of two "quicker" and "easier" alternatives (electro-shocking and dilute-formalin expulsion) in relation to the traditional hand-sorting method. Sampling was performed in four ecosystems: 1) Native forest (secondary vegetation); 2) edge of a cattail marsh; 3) sorghum croppìng (after harvest); and 4) a >10 yr old Cynodon spp. pasture grazed by horses. Electro-shocking (Thielemann octet method) was performed over an area of approximately 0.4 m2 for 20 min and immediately thereafter, earthworms were handsorted from 0.16 m2 soil monoliths, to a depth of 30 cm, directly underneath the electro-shocked area. Formalin (0.5%) was applied to a 1 m2 area, 5-m away, and the surfacing earthworms collected. Eight samples were taken in the forest and the marsh and 5 samples were taken in the agroecosystems. Earthworms were killed in alcohol (30%) and then fixed in formalin. All individuals collected with each method were counted (separately into age classes), weighed and identified to species level (when possible). Earthworm diversity was always higher with the handsorting method (forest = 8 spp., crop system = 6 spp., swamp = 3 spp., pasture = 2 spp.). Formol and electro-shocking yielded at most 3 species only, generally the fastermoving epigeics and poly-humic endogeics. Amynthas gracilis and Urobenus brasiliensis predominated in the forest, Pontoscolex corethrurus dominated in the marsh and various Dichogaster spp. dominated in the agroecosystems. Earthworm abundance was highest in the cropping system, followed by the forest, swamp and pasture. Efficiency of the sample methods depended on the ecosystem, the species and the measurement in question. At all sites, electro-shocking yielded the fewest earthworms, and the extraction efficiency, was generally low for the total earthworm population: from 0% in the pasture, where the soil was compact and drier, to around 20-30% in the remaining ecosystems. Formalin expulsion was also less efficient than handsorting (10-25%), except in the forest, where it yielded 5 times as many earthworms, primarily due to its efficient sampling of Amynthas and Urobenus spp. Electro-shocking and formalin appear to be interesting methods to sample mostly large, surface-active earthworms, whereas handsorting appears to be better suited for smaller, mostly endogeic earthworm species. Ideally, a combination of both methods should be attempted, to adequately sample both large and faster moving earthworms often missed by handsorting, and smaller, endogeic earthworms, not adequately sampled with formol or electricity.
700 1 $aNUNES, D. H.
700 1 $aPASINI, A.
700 1 $aMOTTE, B.
700 1 $aSANTOS, A. A. dos
700 1 $aSILVA, S. H. da
700 1 $aBROWN, G. G.
773 $tIn: International Symposium on Earthworm Ecology, 8., 2006, Kraków. Abstracts... Kraków: Jagiellonian University, 2006. p. 76.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 34 | |
| 2. |  | OLIVEIRA, L. J.; CORSO, I. C.; SILVA, S. H. da; FAGUNDES, R. A. Efeito de inseticidas misturados as sementes no controle de Diabrotica speciosa (Coleoptera: chrysomelidae) em girassol. In: REUNIAO NACIONAL DE PESQUISA DE GIRASSOL, 13; SIMPOSIO NACIONAL SOBRE A CULTURA DO GIRASSOL, 1., 1999, Itumbiara. Resumos... Londrina: Embrapa Soja, 1999. p.145. (Embrapa Soja. Documentos, 135).| Biblioteca(s): Embrapa Soja. |
|   |
| 3. | | BROWN, G. G.; KORASAKI, V.; MARTINS, P. T.; MATSUMURA, C.; SILVA, S. H. da; PASINI, A. Crescimento de Pontoscolex corethrurus em Latossolo Vermelho Escuro Eutroférrico com diferentes adições de areia e matéria orgânica. In: ENCONTRO LATINO-AMERICANO DE ECOLOGIA E TAXONOMIA DE OLIGOQUETAS, 3., 2007, Curitiba. Minhocas como bioindicadoras ambientais: princípios e práticas: anais. Colombo: Embrapa Florestas, 2008. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
|  |
| 4. | | BROWN, G. G.; MARTINS, P. T.; MATSUMURA, C.; SILVA, S. H. da; FERRARI, E.; PASINI, A. Growth of Pontoscolex corethururus in soils of different textures and contents of organic matter. In: ENCUENTRO LATINO-AMERICANO DE ECOLOGIA Y TAXONOMIA DE OLIGOQUETOS, 2., 2005, San Juan, Puerto Rico. [Resumenes]. San Juan, Puerto Rico: International Institute of Tropical Forestry: Fundación Puertorriqueña de Conservación, 2005. p. 38.| Biblioteca(s): Embrapa Soja. |
| |
| 5. | | KAWASSAKI, N. F. C.; SALVADOR, M. C.; SILVA, S. H. da; HOFFMANN-CAMPO, C. B. Quantificação de flavonóides e identificação de metabólitos secundários em raizes e folhas de soja. In: ENCONTRO BRASILEIRO DE ECOLOGIA QUÍMICA, 5., 2007, Londrina. Resumos... Londrina: Embrapa Soja, 2007. p. 74. Organizado por Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Lenita Jacob Oliveira, Odilon Ferreira Saraiva, Simone Ery Grosskopf.| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Soja. |
| |
| 6. | | SANTOS, A. A. dos; OLIVEIRA, L. J.; SILVA, S. H. da. Sensibilidade relativa de algodão, milho e soja à infestação por percevejo-castanho, Scaptocoris castanea (Hemiptera: Cydnidae), no início da fase vegetativa, em casa-de-vegetação. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 21, 2006, Recife. Entomologia: da academia à transferência de tecnologia: resumos. Recife: SEB: UFRPE, 2006. 1 CD-ROM. Resumo n. 377-1 - Área Ecologia.| Biblioteca(s): Embrapa Soja. |
| |
| 10. | | SANTOS, A. A. dos; KORASAKI, V.; OLIVEIRA, L. J.; BROWN, G. G.; MATSUMURA, C.; PAVÃO, A.; SILVA, S. H da. Composição da fauna invertebrada em cultivos de soja em áreas de reforma de pastagem em Cafeara, PR. In: CONGRESSO BRASILEIRO DE ZOOLOGIA, 26., 2006, Londrina. Resumos... Londrina, SBZ, 2006. 1 CD-ROM. Resumo n. 2477_1340.pdf. Área Resumos: Insecta.| Biblioteca(s): Embrapa Soja. |
| |
| 11. | | SANTOS. A. A. dos; OLIVEIRA, L. J.; SOSA-GOMEZ, D. R.; SILVA, S. H. da; SALVADOR, M. C. Efeito de fungicidas misturados a dieta artificial sobre o consumo e digestão de alimento pela lagarta-da-soja, Anticarsia gemmatalis (Hubner). In: JORNADA ACADÊMICA DA EMBRAPA SOJA, 2., 2006, Londrina. Resumos expandidos. Londrina: Embrapa Soja, 2006. p. 59-63. (Embrapa Soja. Documentos, 276).| Biblioteca(s): Embrapa Soja. |
| |
| 12. | | OLIVEIRA, L. J.; HOFFMANN-CAMPO, C.B.; CORSO, I. C.; SILVA, S. H. da; MENDES, A. C. F. Período residual e efeito de diversos inseticidas misturados à sementes sobre Sternechus subsignatus Boehman, em soja. In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO SUL, 29., 2001, Porto Alegre. Atas e resumos 2001. Porto Alegre: FEPAGRO, 2001. p.108.| Biblioteca(s): Embrapa Soja. |
| |
| 13. | | OLIVEIRA, L. J.; HOFFMANN-CAMPO, C.B.; CORSO, I. C.; MENDES, A. C. F.; SILVA, S. H. da. Efeito residual de inseticidas para tratamento de sementes, na mortalidade e danos de Sternechus subsignatus, em soja. In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 24., 2002, São Pedro, SP. Resumos... Londrina: Embrapa Soja, 2002. p. 177. (Embrapa Soja. Documentos, 185).| Biblioteca(s): Embrapa Soja. |
| |
| 14. | | SALVADOR, M. C.; LEVY, S. M.; BOIÇA JUNIOR, A. L.; SILVA, S. H. da; MOSCARDI, F.; HOFFMANN-CAMPO, C. B. Efeitos de flavonóides no epitélio do intestino médio de Anticarsia gemmatalis. In: ENCONTRO BRASILEIRO DE ECOLOGIA QUÍMICA, 5., 2007, Londrina. Resumos... Londrina: Embrapa Soja, 2007. p. 86. Organizado por Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Lenita Jacob Oliveira, Odilon Ferreira Saraiva, Simone Ery Grosskopf.| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Soja. |
| |
| 15. | | BROWN, G. G.; MARTINS, P. T.; MATSUMURA, C.; SILVA, S. H. da; FERRARI, E.; KORASAKI, V.; PASINI, A. Growth of Pontoscolex corethrurus in an oxisol mixed or not with different amounts of sand and/or organic matter. In: International Symposium on Earthworm Ecology, 8., 2006, Kraków. Abstracts... Kraków: Jagiellonian University, 2006. p. 61.| Biblioteca(s): Embrapa Soja. |
| |
| 16. | | OLIVEIRA, L. J.; HOFFMANN-CAMPO, C. B.; ARIAS, C. A.; TONON, O.; MENDES, A. C. M.; SILVA, S. H. da. Avaliação de germoplasma de soja resistente a insetos (04.2000.336-01). In: HOFFMANN-CAMPO, C. B.; SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2002: entomologia. Londrina: Embrapa Soja, 2003. p. 47-51. (Embrapa Soja. Documentos, 212). Nome correto do terceiro autor ARIAS, C. A. A.| Biblioteca(s): Embrapa Soja. |
| |
| 17. | | OLIVEIRA, L. J.; BROWN, G. G.; CAMPO, R. J.; KORASAKI, V.; MATSUMURA, C.; PAVÃO, A.; SILVA, S. H. da. Levantamentos populacionais de percevejo castanho (Scaptocoris sp.) em áreas de reforma de pastagem em Taciba, SP e Cafeara, PR. In: SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2003: entomologia. Londrina: Embrapa Soja, 2004. p. 43-46. (Embrapa Soja. Documentos, 245).| Biblioteca(s): Embrapa Soja. |
| |
| 18. | | BROWN, G. G.; BRANDÃO JÚNIOR, O.; ALBERTON, O.; HUNGRIA, M.; SILVA, S. H. da; TORRES, E.; OLIVEIRA, L. J. Soil management and soil microfauna communities at Embrapa Soybean, Londrina, Brazil. In: INTERNATIONAL TECHNICAL WORKSHOP ON BIOLOGICAL MANAGEMENT OF SOIL ECOSYSTEMS FOR SUSTAINABLE AGRICULTURE, 2002, Londrina. Program, abstracts and related documents. Londrina: Embrapa Soybean: FAO, 2002. p. 84-85. (Embrapa Soja. Documentos, 182). Organizado por George G. Brown, Mariangela Hungria, Lenita Jacob Oliveira, Sally Bunning, Adriana Montañez.| Biblioteca(s): Embrapa Soja. |
| |
| 19. | | TOLEDO, A. M.; HOFFMANN-CAMPO, C. B.; MIYAKUBO, S. H.; SALVADOR, M. C.; MENDES, A. C. F.; SILVA, S. H. da; BROGIN, R. L.; BOIÇA JUNIOR, A. L. Avaliação da atividade deterrente de frações e de substâncias químicas extraídas de vagens e sementes de soja sobre percevejos sugadores. In: SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2003: entomologia. Londrina: Embrapa Soja, 2004. p. 60-62. (Embrapa Soja. Documentos, 245).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Soja. |
| |
| 20. | | OLIVEIRA, L. J.; CORRÊA-FERREIRA, B. S.; CATTELAN, A. J.; PERES, W.; HOFFMANN-CAMPO, C. B.; SILVA, S. H. da; AZEVEDO, J. de; MENDES, A. C. F. Biologia, ecologia e efeito de práticas culturais no manejo de pragas da soja: danos causados por corós e percevejos em soja (04.2000.323-01). In: HOFFMANN-CAMPO, C. B.; SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2002: entomologia. Londrina: Embrapa Soja, 2003. p. 8-16. (Embrapa Soja. Documentos, 212).| Biblioteca(s): Embrapa Soja. |
| |
| Registros recuperados : 34 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
