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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
10/08/2004 |
Data da última atualização: |
30/03/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BARRIGOSSI, J. A. F.; YOUNG, L. J.; CRAWFORD, C. A. G.; HEIN, G. L.; HIGLEY, L. G. |
Afiliação: |
JOSE ALEXANDRE F BARRIGOSSI, CNPAF; LINDA J. YOUNG; CAROL A. G. CRAWFORD; GARY L. HEIN; LEON G. HIGLEY. |
Título: |
Spatial and probability distribution of mexican bean beetle (Coleoptera: Coccinellidae) egg mass populations in dry bean. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
Environmental Entomology, v. 30, n. 2, p. 244-253, Apr. 2001. |
ISSN: |
0046-225X |
DOI: |
10.1603/0046-225X-30.2.244 |
Idioma: |
Inglês |
Conteúdo: |
The spatial pattern and probability distribution of Mexican bean beetle, Epilachna varivestis Mulsant, egg masses were studied in four dry bean, Phaseolus vulgaris L., fields near Scottsbluff, NE, during the 1994 and 1995 growing seasons. Sampling was conducted in a regular and uniform grid to guarantee coverage of the field. The experimental unit in all fields was 0.30 row-m, and five measurements were made at 0.76-m intervals. A total of 12,290 locations was sampled. Geostatistics and discrete statistics were used to describe the egg mass distribution. Regression was used to detect and separate macroscale trends from the microscale variation. The presence of macroscale variation indicated a significant edge effect with ovipositing females moving into dry bean fields from their overwintering sites. The microscale variation estimated from the estimated residuals from regressions to estimate trends was studied using semivariograms for all fields. Semivariograms strongly indicate that Mexican bean beetle eggs are randomly distributed across the field and that this random distribution holds across 10-fold differences in population densities. As a result of the significant macroscale trends observed, we conclude that egg mass densities may be greater in areas of the field near edges adjacent to beetle overwintering sites. The probability distribution that best fit the data was the negative binomial. Our results illustrate the importance of scale in discussing and characterizing distribution. Although there is evidence of edge effect at the field level, there is no evidence of spatial dependence between egg samples at the sampling region level. At an even lower level, the egg mass itself, eggs are aggregated. MenosThe spatial pattern and probability distribution of Mexican bean beetle, Epilachna varivestis Mulsant, egg masses were studied in four dry bean, Phaseolus vulgaris L., fields near Scottsbluff, NE, during the 1994 and 1995 growing seasons. Sampling was conducted in a regular and uniform grid to guarantee coverage of the field. The experimental unit in all fields was 0.30 row-m, and five measurements were made at 0.76-m intervals. A total of 12,290 locations was sampled. Geostatistics and discrete statistics were used to describe the egg mass distribution. Regression was used to detect and separate macroscale trends from the microscale variation. The presence of macroscale variation indicated a significant edge effect with ovipositing females moving into dry bean fields from their overwintering sites. The microscale variation estimated from the estimated residuals from regressions to estimate trends was studied using semivariograms for all fields. Semivariograms strongly indicate that Mexican bean beetle eggs are randomly distributed across the field and that this random distribution holds across 10-fold differences in population densities. As a result of the significant macroscale trends observed, we conclude that egg mass densities may be greater in areas of the field near edges adjacent to beetle overwintering sites. The probability distribution that best fit the data was the negative binomial. Our results illustrate the importance of scale in discussing and characterizing ... Mostrar Tudo |
Thesagro: |
Feijão; Phaseolus Vulgaris; Praga de Planta. |
Thesaurus Nal: |
Epilachna varivestis; geostatistics; probability distribution; sampling. |
Categoria do assunto: |
O Insetos e Entomologia |
Marc: |
LEADER 02589naa a2200277 a 4500 001 1212456 005 2022-03-30 008 2001 bl uuuu u00u1 u #d 022 $a0046-225X 024 7 $a10.1603/0046-225X-30.2.244$2DOI 100 1 $aBARRIGOSSI, J. A. F. 245 $aSpatial and probability distribution of mexican bean beetle (Coleoptera$bCoccinellidae) egg mass populations in dry bean.$h[electronic resource] 260 $c2001 520 $aThe spatial pattern and probability distribution of Mexican bean beetle, Epilachna varivestis Mulsant, egg masses were studied in four dry bean, Phaseolus vulgaris L., fields near Scottsbluff, NE, during the 1994 and 1995 growing seasons. Sampling was conducted in a regular and uniform grid to guarantee coverage of the field. The experimental unit in all fields was 0.30 row-m, and five measurements were made at 0.76-m intervals. A total of 12,290 locations was sampled. Geostatistics and discrete statistics were used to describe the egg mass distribution. Regression was used to detect and separate macroscale trends from the microscale variation. The presence of macroscale variation indicated a significant edge effect with ovipositing females moving into dry bean fields from their overwintering sites. The microscale variation estimated from the estimated residuals from regressions to estimate trends was studied using semivariograms for all fields. Semivariograms strongly indicate that Mexican bean beetle eggs are randomly distributed across the field and that this random distribution holds across 10-fold differences in population densities. As a result of the significant macroscale trends observed, we conclude that egg mass densities may be greater in areas of the field near edges adjacent to beetle overwintering sites. The probability distribution that best fit the data was the negative binomial. Our results illustrate the importance of scale in discussing and characterizing distribution. Although there is evidence of edge effect at the field level, there is no evidence of spatial dependence between egg samples at the sampling region level. At an even lower level, the egg mass itself, eggs are aggregated. 650 $aEpilachna varivestis 650 $ageostatistics 650 $aprobability distribution 650 $asampling 650 $aFeijão 650 $aPhaseolus Vulgaris 650 $aPraga de Planta 700 1 $aYOUNG, L. J. 700 1 $aCRAWFORD, C. A. G. 700 1 $aHEIN, G. L. 700 1 $aHIGLEY, L. G. 773 $tEnvironmental Entomology$gv. 30, n. 2, p. 244-253, Apr. 2001.
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Embrapa Arroz e Feijão (CNPAF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
Data corrente: |
25/11/2002 |
Data da última atualização: |
15/03/2016 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
FREITAS-SILVA, O.; SOARES, A. G.; ROZA, J. H. I.; SILVA, A. F. |
Afiliação: |
OTNIEL FREITAS SILVA, CTAA; ANTONIO GOMES SOARES, CTAA. |
Título: |
Cuantificación de las pérdidas bióticas en papayo (Carica papaya L.) comercializado en el Estado de Rio de Janeiro, Brasil. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
In: CONGRESO NACIONAL DE HORTICULTURA, 8.; SEMINARIO REGIONAL DE FRUTILLA, 2001, Salto, Uruguay. Resúmenes. Montevideo: Sociedad Uruguaya de Horticultura; Instituto Nacional de Investigación Agropecuaria, 2001. p. 85. |
Idioma: |
Espanhol |
Palavras-Chave: |
Perdas. |
Thesagro: |
Mamão; Pós-Colheita. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 00707nam a2200169 a 4500 001 1414211 005 2016-03-15 008 2001 bl uuuu u00u1 u #d 100 1 $aFREITAS-SILVA, O. 245 $aCuantificación de las pérdidas bióticas en papayo (Carica papaya L.) comercializado en el Estado de Rio de Janeiro, Brasil. 260 $aIn: CONGRESO NACIONAL DE HORTICULTURA, 8.; SEMINARIO REGIONAL DE FRUTILLA, 2001, Salto, Uruguay. Resúmenes. Montevideo: Sociedad Uruguaya de Horticultura; Instituto Nacional de Investigación Agropecuaria, 2001. p. 85.$c2001 650 $aMamão 650 $aPós-Colheita 653 $aPerdas 700 1 $aSOARES, A. G. 700 1 $aROZA, J. H. I. 700 1 $aSILVA, A. F.
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