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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
02/06/2016 |
Data da última atualização: |
02/06/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MASCARIN, G. M.; GUARÍN-MOLINA, J. H.; ARTHURS, S. P.; HUMBER, R. A.; MORAL, R. de A.; DEMÉTRIO, C. G. B.; DELALIBERA JUNIOR, I. |
Afiliação: |
GABRIEL MOURA MASCARIN, CNPAF; JUAN HUMBERTO GUARÍN-MOLINA, CORPOICA; STEVEN PAUL ARTHURS, UNIVERSITY OF FLORIDA, Apopka-FL; RICHARD ALAN HUMBER, USDA; RAFAEL DE ANDRADE MORAL, ESALQ; CLARICE GARCIA BORGES DEMÉTRIO, ESALQ; ITALO DELALIBERA JUNIOR, ESALQ. |
Título: |
Seasonal prevalence of the insect pathogenic fungus Colletotrichum nymphaeae in Brazilian citrus groves under different chemical pesticide regimes. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Fungal Ecology, v. 22, p. 43-51, Aug. 2016. |
DOI: |
10.1016/j.funeco.2016.04.005 |
Idioma: |
Inglês |
Conteúdo: |
We report an endemic entomopathogenic fungus, known in Brazil as the 'salm~ao' fungus and identified here as Colletotrichum nymphaeae (Sordariomycetes: Glomerellales), infecting populations of citrus orthezia scale, Praelongorthezia praelonga. The seasonal prevalence of this pathogen in P. praelonga populations was investigated in three commercial citrus groves maintained under different pesticide regimes. Two citrus groves included inundative releases of another insect pathogenic fungus, Lecanicillium longisporum. Natural epizootics were consistently observed, with up to 84% infection rates being recorded during the warm rainy season. Temporal progression of C. nymphaeae-induced disease varied among the three pesticide regimes. Low infection levels from C. nymphaeae were associated with intensive application of broad spectrum pesticides. However, the prevalence of C. nymphaeae followed a density-dependent pattern with insect host abundance, irrespective of the pesticide regime. High proportions of Lecanicillium-infected insects were observed following infection peaks of C. nymphaeae and both fungi together contributed to 95% overall mortality of citrus orthezia during the wet season. Hence, the combined effect of both fungi considerably improves the biological control of citrus orthezia. We also surmise that the host abundance, environmental conditions, and application frequency of chemical pesticides in citrus groves exert a great influence in the seasonal prevalence of C. nymphaeae-induced disease. Altogether, these results suggest that C. nymphaeae is an important pathogen of P. praelonga and indicate that frequent use of synthetic pesticides may delay or reduce fungal epizootics. MenosWe report an endemic entomopathogenic fungus, known in Brazil as the 'salm~ao' fungus and identified here as Colletotrichum nymphaeae (Sordariomycetes: Glomerellales), infecting populations of citrus orthezia scale, Praelongorthezia praelonga. The seasonal prevalence of this pathogen in P. praelonga populations was investigated in three commercial citrus groves maintained under different pesticide regimes. Two citrus groves included inundative releases of another insect pathogenic fungus, Lecanicillium longisporum. Natural epizootics were consistently observed, with up to 84% infection rates being recorded during the warm rainy season. Temporal progression of C. nymphaeae-induced disease varied among the three pesticide regimes. Low infection levels from C. nymphaeae were associated with intensive application of broad spectrum pesticides. However, the prevalence of C. nymphaeae followed a density-dependent pattern with insect host abundance, irrespective of the pesticide regime. High proportions of Lecanicillium-infected insects were observed following infection peaks of C. nymphaeae and both fungi together contributed to 95% overall mortality of citrus orthezia during the wet season. Hence, the combined effect of both fungi considerably improves the biological control of citrus orthezia. We also surmise that the host abundance, environmental conditions, and application frequency of chemical pesticides in citrus groves exert a great influence in the seasonal prevalence of C.... Mostrar Tudo |
Palavras-Chave: |
Colletotrichum nymphaeae; Conservational biocontrol; Density dependence; Natural epizootics; Pesticide; Praelongorthezia praelonga. |
Thesagro: |
Fungo entomogeno; Pesticida. |
Thesaurus Nal: |
Climatic factors; Entomopathogenic fungi. |
Categoria do assunto: |
O Insetos e Entomologia |
Marc: |
LEADER 02760naa a2200325 a 4500 001 2046122 005 2016-06-02 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1016/j.funeco.2016.04.005$2DOI 100 1 $aMASCARIN, G. M. 245 $aSeasonal prevalence of the insect pathogenic fungus Colletotrichum nymphaeae in Brazilian citrus groves under different chemical pesticide regimes.$h[electronic resource] 260 $c2016 520 $aWe report an endemic entomopathogenic fungus, known in Brazil as the 'salm~ao' fungus and identified here as Colletotrichum nymphaeae (Sordariomycetes: Glomerellales), infecting populations of citrus orthezia scale, Praelongorthezia praelonga. The seasonal prevalence of this pathogen in P. praelonga populations was investigated in three commercial citrus groves maintained under different pesticide regimes. Two citrus groves included inundative releases of another insect pathogenic fungus, Lecanicillium longisporum. Natural epizootics were consistently observed, with up to 84% infection rates being recorded during the warm rainy season. Temporal progression of C. nymphaeae-induced disease varied among the three pesticide regimes. Low infection levels from C. nymphaeae were associated with intensive application of broad spectrum pesticides. However, the prevalence of C. nymphaeae followed a density-dependent pattern with insect host abundance, irrespective of the pesticide regime. High proportions of Lecanicillium-infected insects were observed following infection peaks of C. nymphaeae and both fungi together contributed to 95% overall mortality of citrus orthezia during the wet season. Hence, the combined effect of both fungi considerably improves the biological control of citrus orthezia. We also surmise that the host abundance, environmental conditions, and application frequency of chemical pesticides in citrus groves exert a great influence in the seasonal prevalence of C. nymphaeae-induced disease. Altogether, these results suggest that C. nymphaeae is an important pathogen of P. praelonga and indicate that frequent use of synthetic pesticides may delay or reduce fungal epizootics. 650 $aClimatic factors 650 $aEntomopathogenic fungi 650 $aFungo entomogeno 650 $aPesticida 653 $aColletotrichum nymphaeae 653 $aConservational biocontrol 653 $aDensity dependence 653 $aNatural epizootics 653 $aPesticide 653 $aPraelongorthezia praelonga 700 1 $aGUARÍN-MOLINA, J. H. 700 1 $aARTHURS, S. P. 700 1 $aHUMBER, R. A. 700 1 $aMORAL, R. de A. 700 1 $aDEMÉTRIO, C. G. B. 700 1 $aDELALIBERA JUNIOR, I. 773 $tFungal Ecology$gv. 22, p. 43-51, Aug. 2016.
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Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
10/12/2019 |
Data da última atualização: |
10/12/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
GOMES, G. M. F.; BOMFIM, M. A. D.; SANTOS, S. F. dos; SILVA, I. C. S.; SANTOS, V. O. |
Afiliação: |
GISELLE MARIA FERREIRA GOMES; MARCO AURELIO DELMONDES BOMFIM, CNPC; SUELI FREITAS DOS SANTOS; IGOR CASSIANO SARAIVA SILVA; VALCICLEIDE OLIVEIRA SANTOS. |
Título: |
Análise exploratória do farelo de gérmen de milho utilizando espectroscopia NIRS. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 8., 2019, Sobral. Anais... Sobral: Embrapa Caprinos e Ovinos, 2019. p. 20-21. (Embrapa Caprinos e Ovinos. Documentos, 126). |
Idioma: |
Português |
Palavras-Chave: |
Análise de alimentos. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206570/1/CNPC-2019-Analise-exploratoria.pdf
|
Marc: |
LEADER 00661nam a2200157 a 4500 001 2116456 005 2019-12-10 008 2019 bl uuuu u00u1 u #d 100 1 $aGOMES, G. M. F. 245 $aAnálise exploratória do farelo de gérmen de milho utilizando espectroscopia NIRS.$h[electronic resource] 260 $aIn: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 8., 2019, Sobral. Anais... Sobral: Embrapa Caprinos e Ovinos, 2019. p. 20-21. (Embrapa Caprinos e Ovinos. Documentos, 126).$c2019 653 $aAnálise de alimentos 700 1 $aBOMFIM, M. A. D. 700 1 $aSANTOS, S. F. dos 700 1 $aSILVA, I. C. S. 700 1 $aSANTOS, V. O.
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