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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/12/2005 |
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Data da última atualização: |
06/12/2005 |
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Autoria: |
MARTINS, P. T.; NUNES, D.; PASINI, A.; BROWN, G. |
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Título: |
Comparison of three different sampling methods for earthworms in agricultural and natural ecosystems near Londrina, Brazil. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
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. 37. |
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Idioma: |
Inglês |
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Conteúdo: |
Sampling 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. With this in mind, we set out to compare the traditional hand-sorting method to two alternatives: electro-shocking and dilute formalin expulsion. The following collection methods were used in anative forest 9secondary vegetation) and the edge of a marsh (cattai), and two agroecosystems: after sorghum harvest and a > 10 yr old Cynodon spp. pasture grazed by horses. Electro-shocking (Thieleman 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, under the electro-shocked area. Formalin (0.5%) was applied over a 1 m2 area, 5-m away, and the surfacing earthworms collected. Eight samples were taken in a 70-m transect in the forest and the marsh and 5 samples were taken in the agroecosystems. All earthworms were killed in dilute ethyl 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). At all sites, electro-shocking yielded the fewest earthworms. Amynthas gracilis and Urobenus brasiliensis predominated in the forest, and Pontoscolex corethrurus dominated in the marsh where formalin worked best of all. Dichogaster spp. dominated in the agroecosystems, where handsorting worked best, yielding the most earthworms. Electroshocking 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. MenosSampling 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. With this in mind, we set out to compare the traditional hand-sorting method to two alternatives: electro-shocking and dilute formalin expulsion. The following collection methods were used in anative forest 9secondary vegetation) and the edge of a marsh (cattai), and two agroecosystems: after sorghum harvest and a > 10 yr old Cynodon spp. pasture grazed by horses. Electro-shocking (Thieleman 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, under the electro-shocked area. Formalin (0.5%) was applied over a 1 m2 area, 5-m away, and the surfacing earthworms collected. Eight samples were taken in a 70-m transect in the forest and the marsh and 5 samples were taken in the agroecosystems. All earthworms were killed in dilute ethyl 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). At all sites, electro-shocking yielded the fewest earthworms. Amynthas gracilis and Urobenus brasiliensis predominated in the forest, and Pontoscolex corethrurus dominated in the marsh where formalin worked best of all. Dichogaster spp. dominated in the agroecosy... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02447naa a2200157 a 4500
001 1468624
005 2005-12-06
008 2005 bl --- 0-- u #d
100 1 $aMARTINS, P. T.
245 $aComparison of three different sampling methods for earthworms in agricultural and natural ecosystems near Londrina, Brazil.
260 $c2005
520 $aSampling 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. With this in mind, we set out to compare the traditional hand-sorting method to two alternatives: electro-shocking and dilute formalin expulsion. The following collection methods were used in anative forest 9secondary vegetation) and the edge of a marsh (cattai), and two agroecosystems: after sorghum harvest and a > 10 yr old Cynodon spp. pasture grazed by horses. Electro-shocking (Thieleman 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, under the electro-shocked area. Formalin (0.5%) was applied over a 1 m2 area, 5-m away, and the surfacing earthworms collected. Eight samples were taken in a 70-m transect in the forest and the marsh and 5 samples were taken in the agroecosystems. All earthworms were killed in dilute ethyl 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). At all sites, electro-shocking yielded the fewest earthworms. Amynthas gracilis and Urobenus brasiliensis predominated in the forest, and Pontoscolex corethrurus dominated in the marsh where formalin worked best of all. Dichogaster spp. dominated in the agroecosystems, where handsorting worked best, yielding the most earthworms. Electroshocking 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.
700 1 $aNUNES, D.
700 1 $aPASINI, A.
700 1 $aBROWN, G.
773 $tIn: 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. 37.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
01/07/1994 |
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Data da última atualização: |
06/11/2018 |
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Autoria: |
IMBIRIBA, E. P.; LOURENÇO JUNIOR, J. de B.; DUTRA, S. |
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Afiliação: |
EMIR PALMEIRA IMBIRIBA, CPATU; JOSÉ DE BRITO LOURENÇO JUNIOR, CPATU; SATURNINO DUTRA, CPATU. |
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Título: |
Rendimento de carne de pirarucu, Arapaima gigas (Cuvier). |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Belém, PA: EMBRAPA-CPATU, 1994. |
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Páginas: |
21 p. |
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Descrição Física: |
il. |
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Série: |
(EMBRAPA-CPATU. Boletim de pesquisa, 150). |
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Idioma: |
Português |
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Conteúdo: |
Foi avaliado o rendimento de carne de exemplares de pirarucu (Arapaima gigas), capturados em ambientes naturais da microrregião do Baixo Amazônas Paraense, em Almeirim, PA, nos meses de novembro e dezembro de 1989. Os onze exemplares estudados foram pescados com malhadeiras e manipulados para coleta de dados biométricos de peso, comprimento total e rendimento de carne. Três desses exemplares foram utilizados para determinação dos resíduos. Os dados foram analisados através de estatística descritiva (valores mínimo e máximo, média e desvio padrão). As médias e desvios padrões de peso vivo (kg), comprimento total (m), peso de carne (kg) e rendimento de carne (%), foram respecetivamente, 64,00 +- 28,2; 1,70 +- 0,3; 36,90 +- 16,9; e 57,0 +- 3,3. Os resíduos, compostos por cabeça, coluna vertebral, trato digestivo, opérculo, cauda e couro, apresentaram médias e desvios padrões, respectivamente, em kg, de 6,3 +- 1,6, 7,0 +- 2,3; 3,3 +- 1,2; 3,0 +- 0,8; 3,5 +- 1,3 e 6,8 +- 2,0. Em termos de rendimento econômico comparativo, o pirarucu suplanta ao dobro o tambaqui (Colossoma macropomum) e em 40 vezes aos bubalinos, bovinos e ovinos. Considerando-se os elevados rendimentos de carne, essa espécie tem elevada potencialidade para ser utilizada em piscicultura industrial. |
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Palavras-Chave: |
Amazonas; Brasil; Fishery; Fishing; Pirarucu fish; Pisciculture; Production; Residue; Residuos; Yield. |
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Thesagro: |
Carne; Peixe; Pesca; Pirarucu; Piscicultura; Produção; Produção de Carne; Produtividade. |
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Thesaurus NAL: |
Amazonia; Arapaima gigas; fish; meat; meat production. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42268/1/Boletim-Pesquisa-150-CPATU.pdf
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Marc: |
LEADER 02345nam a2200433 a 4500
001 1381115
005 2018-11-06
008 1994 bl uuuu u0uu1 u #d
100 1 $aIMBIRIBA, E. P.
245 $aRendimento de carne de pirarucu, Arapaima gigas (Cuvier).
260 $aBelém, PA: EMBRAPA-CPATU$c1994
300 $a21 p.$cil.
490 $a(EMBRAPA-CPATU. Boletim de pesquisa, 150).
520 $aFoi avaliado o rendimento de carne de exemplares de pirarucu (Arapaima gigas), capturados em ambientes naturais da microrregião do Baixo Amazônas Paraense, em Almeirim, PA, nos meses de novembro e dezembro de 1989. Os onze exemplares estudados foram pescados com malhadeiras e manipulados para coleta de dados biométricos de peso, comprimento total e rendimento de carne. Três desses exemplares foram utilizados para determinação dos resíduos. Os dados foram analisados através de estatística descritiva (valores mínimo e máximo, média e desvio padrão). As médias e desvios padrões de peso vivo (kg), comprimento total (m), peso de carne (kg) e rendimento de carne (%), foram respecetivamente, 64,00 +- 28,2; 1,70 +- 0,3; 36,90 +- 16,9; e 57,0 +- 3,3. Os resíduos, compostos por cabeça, coluna vertebral, trato digestivo, opérculo, cauda e couro, apresentaram médias e desvios padrões, respectivamente, em kg, de 6,3 +- 1,6, 7,0 +- 2,3; 3,3 +- 1,2; 3,0 +- 0,8; 3,5 +- 1,3 e 6,8 +- 2,0. Em termos de rendimento econômico comparativo, o pirarucu suplanta ao dobro o tambaqui (Colossoma macropomum) e em 40 vezes aos bubalinos, bovinos e ovinos. Considerando-se os elevados rendimentos de carne, essa espécie tem elevada potencialidade para ser utilizada em piscicultura industrial.
650 $aAmazonia
650 $aArapaima gigas
650 $afish
650 $ameat
650 $ameat production
650 $aCarne
650 $aPeixe
650 $aPesca
650 $aPirarucu
650 $aPiscicultura
650 $aProdução
650 $aProdução de Carne
650 $aProdutividade
653 $aAmazonas
653 $aBrasil
653 $aFishery
653 $aFishing
653 $aPirarucu fish
653 $aPisciculture
653 $aProduction
653 $aResidue
653 $aResiduos
653 $aYield
700 1 $aLOURENÇO JUNIOR, J. de B.
700 1 $aDUTRA, S.
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