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 | Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
29/11/2021 |
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Data da última atualização: |
21/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FARIA, M. R. de; SOUZA, D. A. de; SANCHES, M. M.; SCHMIDT, F. G. V.; OLIVEIRA, C. M. de; BENITO, N. P.; LOPES, R. B. |
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Afiliação: |
MARCOS RODRIGUES DE FARIA, Cenargen; DANIELA AGUIAR DE SOUZA, Cenargen; MARCIO MARTINELLO SANCHES, Cenargen; FRANCISCO GUILHERME V SCHMIDT, Cenargen; CHARLES MARTINS DE OLIVEIRA, CPAC; NORTON POLO BENITO, Cenargen; ROGERIO BIAGGIONI LOPES, Cenargen. |
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Título: |
Evaluation of key parameters for developing a Metarhizium rileyi-based biopesticide against Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize: laboratory, greenhouse, and field trials. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Pest Management Science, v. 78, p. 1146-1154, 2022. |
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DOI: |
10.1002/ps.6729. |
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Idioma: |
Português |
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Notas: |
Na publicação: Marcos Faria; Daniela Aguiar Souza; Francisco Guilherme Vergolino Schmidt. |
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Conteúdo: |
Background: The entomopathogenic fungus Metarhizium rileyi is well known to cause natural infections in some caterpillars. In this multiyear study, we carried out lab, greenhouse and three field trials with the aim of developing a sustainable option for control of the fall armyworm (FAW) in maize. Association of Metarhizium rileyi with Spodoptera frugiperda baculovirus (SfMNPV) and delivery strategies were also investigated in this study. Results: The selected isolate (CG381) was effective in the lab at a low concentration (ca. 4 × 103 conidia.cm-2 ), killing more than 95% of FAW larvae within 8 days. In the greenhouse assay, applications of conidia suspended in water or as dry powder in maize whorls (ca. 6.3 × 106 conidia per plant) produced similar larval mortalities (88-96%). In the field trials, conventional spraying of unformulated conidia (0.6 and 1.2 × 1012 conidia.ha-1 ) caused low larval mortalities (27-31%). Simultaneous application of either unformulated or oil-based formulations of M. rileyi conidia and S. frugiperda baculovirus (SfMNPV) to plant rows caused larval mortalities comparable to each of the pathogens applied alone. However, when a formulation containing both pathogens was sprayed directly into the whorls, the overall mortality of S. frugiperda larvae due to pathogens (mostly to M. rileyi infections) reached ca. 59%, two-fold higher than the other treatments with conventional spraying, whereas in the control the overall mortality was only 1%. Conclusion: Optimizing exposure of S. frugiperda larvae to inoculum of virulent entomopathogens through directed applications to maize whorls is critical to produce satisfactory mortality levels and is promising for integrated pest management. MenosBackground: The entomopathogenic fungus Metarhizium rileyi is well known to cause natural infections in some caterpillars. In this multiyear study, we carried out lab, greenhouse and three field trials with the aim of developing a sustainable option for control of the fall armyworm (FAW) in maize. Association of Metarhizium rileyi with Spodoptera frugiperda baculovirus (SfMNPV) and delivery strategies were also investigated in this study. Results: The selected isolate (CG381) was effective in the lab at a low concentration (ca. 4 × 103 conidia.cm-2 ), killing more than 95% of FAW larvae within 8 days. In the greenhouse assay, applications of conidia suspended in water or as dry powder in maize whorls (ca. 6.3 × 106 conidia per plant) produced similar larval mortalities (88-96%). In the field trials, conventional spraying of unformulated conidia (0.6 and 1.2 × 1012 conidia.ha-1 ) caused low larval mortalities (27-31%). Simultaneous application of either unformulated or oil-based formulations of M. rileyi conidia and S. frugiperda baculovirus (SfMNPV) to plant rows caused larval mortalities comparable to each of the pathogens applied alone. However, when a formulation containing both pathogens was sprayed directly into the whorls, the overall mortality of S. frugiperda larvae due to pathogens (mostly to M. rileyi infections) reached ca. 59%, two-fold higher than the other treatments with conventional spraying, whereas in the control the overall mortality was only 1%. Conclusio... Mostrar Tudo |
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Palavras-Chave: |
Biocontrol; Mycopesticide. |
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Thesaurus Nal: |
Biological control; Entomopathogens; Pest control. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02716naa a2200277 a 4500
001 2136715
005 2022-11-21
008 2022 bl uuuu u00u1 u #d
024 7 $a10.1002/ps.6729.$2DOI
100 1 $aFARIA, M. R. de
245 $aEvaluation of key parameters for developing a Metarhizium rileyi-based biopesticide against Spodoptera frugiperda (Lepidoptera$bNoctuidae) in maize: laboratory, greenhouse, and field trials.$h[electronic resource]
260 $c2022
500 $aNa publicação: Marcos Faria; Daniela Aguiar Souza; Francisco Guilherme Vergolino Schmidt.
520 $aBackground: The entomopathogenic fungus Metarhizium rileyi is well known to cause natural infections in some caterpillars. In this multiyear study, we carried out lab, greenhouse and three field trials with the aim of developing a sustainable option for control of the fall armyworm (FAW) in maize. Association of Metarhizium rileyi with Spodoptera frugiperda baculovirus (SfMNPV) and delivery strategies were also investigated in this study. Results: The selected isolate (CG381) was effective in the lab at a low concentration (ca. 4 × 103 conidia.cm-2 ), killing more than 95% of FAW larvae within 8 days. In the greenhouse assay, applications of conidia suspended in water or as dry powder in maize whorls (ca. 6.3 × 106 conidia per plant) produced similar larval mortalities (88-96%). In the field trials, conventional spraying of unformulated conidia (0.6 and 1.2 × 1012 conidia.ha-1 ) caused low larval mortalities (27-31%). Simultaneous application of either unformulated or oil-based formulations of M. rileyi conidia and S. frugiperda baculovirus (SfMNPV) to plant rows caused larval mortalities comparable to each of the pathogens applied alone. However, when a formulation containing both pathogens was sprayed directly into the whorls, the overall mortality of S. frugiperda larvae due to pathogens (mostly to M. rileyi infections) reached ca. 59%, two-fold higher than the other treatments with conventional spraying, whereas in the control the overall mortality was only 1%. Conclusion: Optimizing exposure of S. frugiperda larvae to inoculum of virulent entomopathogens through directed applications to maize whorls is critical to produce satisfactory mortality levels and is promising for integrated pest management.
650 $aBiological control
650 $aEntomopathogens
650 $aPest control
653 $aBiocontrol
653 $aMycopesticide
700 1 $aSOUZA, D. A. de
700 1 $aSANCHES, M. M.
700 1 $aSCHMIDT, F. G. V.
700 1 $aOLIVEIRA, C. M. de
700 1 $aBENITO, N. P.
700 1 $aLOPES, R. B.
773 $tPest Management Science$gv. 78, p. 1146-1154, 2022.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
26/02/2015 |
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Data da última atualização: |
26/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
RIBEIRO, M. de F.; SANTOS FILHO, P. S. |
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Afiliação: |
MARCIA DE FATIMA RIBEIRO, CPATSA; P. S. SANTOS FILHO, Universidade de São Paulo. |
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Título: |
Size variation in eggs laid by normal-sized and miniature queens of Plebeia remota (Holmberg) (Hymenoptera: Apidae: Meliponini). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Sociobiology, v. 61, n. 4, p. 483-489, dec. 2014. |
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DOI: |
10.13102/sociobiology.v61i4. 483-489 |
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Idioma: |
Inglês |
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Conteúdo: |
Miniature stingless bee queens have been studied concerning frequency distribution, production and egg laying performance. This study aimed to investigate size variation in eggs laid by Plebeia remota (Holmberg) queens and whether it is due to differences in queen size or colony conditions. A sample of 10 queens (8 of typical size and 2 miniature) was measured morphometrically (head width, interorbital distance, and intertegular distance) as well the eggs they laid (length, width and volume). Initially, eggs were analyzed when laid by queens in their own colonies. Significant differences were found for length, width and volume of eggs considering the total group of queens or both queen morphotypes. However, no significant correlations were found between queen size and egg size. Afterwards, two experiments were performed to evaluate the influence of colony conditions on egg size. Firstly, we shifted the queens from their original colonies (i.e., a typical queen was placed into a miniature queen colony, and vice-versa). Secondly, they were put into another colony (both types of queens, one each time, were placed on a third colony, a ?host colony?). In all situations, both queen morphotypes laid eggs of similar or different sizes than before, often with significant differences. The results indicate that variation in egg size is due to conditions imposed to queens in the colony (e.g. queen feeding status, number of cells available to be oviposited), and not due to variation in queen body size. MenosMiniature stingless bee queens have been studied concerning frequency distribution, production and egg laying performance. This study aimed to investigate size variation in eggs laid by Plebeia remota (Holmberg) queens and whether it is due to differences in queen size or colony conditions. A sample of 10 queens (8 of typical size and 2 miniature) was measured morphometrically (head width, interorbital distance, and intertegular distance) as well the eggs they laid (length, width and volume). Initially, eggs were analyzed when laid by queens in their own colonies. Significant differences were found for length, width and volume of eggs considering the total group of queens or both queen morphotypes. However, no significant correlations were found between queen size and egg size. Afterwards, two experiments were performed to evaluate the influence of colony conditions on egg size. Firstly, we shifted the queens from their original colonies (i.e., a typical queen was placed into a miniature queen colony, and vice-versa). Secondly, they were put into another colony (both types of queens, one each time, were placed on a third colony, a ?host colony?). In all situations, both queen morphotypes laid eggs of similar or different sizes than before, often with significant differences. The results indicate that variation in egg size is due to conditions imposed to queens in the colony (e.g. queen feeding status, number of cells available to be oviposited), and not due to variation in q... Mostrar Tudo |
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Palavras-Chave: |
Abelhas sem ferrão; Insect. |
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Thesagro: |
Abelha; Inseto. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/118819/1/Marcia-1-2014.pdf
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Marc: |
LEADER 02141naa a2200193 a 4500
001 2010025
005 2015-02-26
008 2014 bl uuuu u00u1 u #d
024 7 $a10.13102/sociobiology.v61i4. 483-489$2DOI
100 1 $aRIBEIRO, M. de F.
245 $aSize variation in eggs laid by normal-sized and miniature queens of Plebeia remota (Holmberg) (Hymenoptera$bApidae: Meliponini).$h[electronic resource]
260 $c2014
520 $aMiniature stingless bee queens have been studied concerning frequency distribution, production and egg laying performance. This study aimed to investigate size variation in eggs laid by Plebeia remota (Holmberg) queens and whether it is due to differences in queen size or colony conditions. A sample of 10 queens (8 of typical size and 2 miniature) was measured morphometrically (head width, interorbital distance, and intertegular distance) as well the eggs they laid (length, width and volume). Initially, eggs were analyzed when laid by queens in their own colonies. Significant differences were found for length, width and volume of eggs considering the total group of queens or both queen morphotypes. However, no significant correlations were found between queen size and egg size. Afterwards, two experiments were performed to evaluate the influence of colony conditions on egg size. Firstly, we shifted the queens from their original colonies (i.e., a typical queen was placed into a miniature queen colony, and vice-versa). Secondly, they were put into another colony (both types of queens, one each time, were placed on a third colony, a ?host colony?). In all situations, both queen morphotypes laid eggs of similar or different sizes than before, often with significant differences. The results indicate that variation in egg size is due to conditions imposed to queens in the colony (e.g. queen feeding status, number of cells available to be oviposited), and not due to variation in queen body size.
650 $aAbelha
650 $aInseto
653 $aAbelhas sem ferrão
653 $aInsect
700 1 $aSANTOS FILHO, P. S.
773 $tSociobiology$gv. 61, n. 4, p. 483-489, dec. 2014.
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