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Registro Completo |
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
18/12/2023 |
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Data da última atualização: |
19/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENESES, J. O.; DIAS, J. A. R.; CUNHA, F. dos S.; SANTOS, H. L. dos; SANTOS, T. B. R.; SANTOS, C. C. M.; NOGUEIRA FILHO, R. M.; PAIXAO, P. E. G.; SOUSA, N. da C.; COUTO, M. V. S. do; ABE, H. A.; SANTOS, F. J. dos; OLIVEIRA, S. P. C. de; MARIA, A. N.; CARDOSO, J. C.; COSTA, L. P. da; FUJIMOTO, R. Y. |
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Afiliação: |
JULIANA OLIVEIRA MENESES, UNIT; JOEL ARTUR RODRIGUES DIAS, UFPA; FERNANDA DOS SANTOS CUNHA, UNIT; HUGO LEANDRO DOS SANTOS, UFS; THAYS BRITO REIS SANTOS, UNIT; CINDY CAROLINE MOURA SANTOS, UNIT; RICARDO MARQUES NOGUEIRA FILHO, UNIT; PETERSON EMMANUEL GUIMARAES PAIXAO, UNIT; NATALINO DA COSTA SOUSA, UFS; MARCIA VALERIA SILVA DO COUTO, UFS; HIGO ANDRADE ABE, UFS; FRANCISCO JOSE DOS SANTOS, CPATC; SILVIA PATRÍCIA CARRASCHI DE OLIVEIRA, UNIARA; ALEXANDRE NIZIO MARIA, CPATC; JULIANA CORDEIRO CARDOSO, UNIT; LUIZ PEREIRA DA COSTA, ICET; RODRIGO YUDI FUJIMOTO, CPATC. |
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Título: |
Prophylactic and therapeutic effects of a nanocomposite (silver nanoparticle plus Terminalia catappa) against Saprolegnia parasitica in tambaqui. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Aquaculture, v. 574, 739695, 2023. |
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ISSN: |
0044-8486 |
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DOI: |
https://doi.org/10.1016/j.aquaculture.2023.739695 |
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Idioma: |
Inglês |
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Conteúdo: |
Infectious diseases have been the main limiting factor for international fish farming, especially saprolegniosis, which causes large economic losses. Therefore, this study evaluated the prophylactic and therapeutic effect of a nanocomposite (Silver nanoparticle plus extract of Terminalia catappa) to control Saprolegnia parasitica in tambaqui Colossoma macropomum. Two tests were carried out: 1) a therapeutic assay including long and short-term baths, containing two concentrations of nanocomposite each, on infected tambaqui and 2) a prophylactic assay where the zoospore and nanocomposite (four different concentrations) were added at the same time into water for 72 h. Mortality, prevalence index, hematology, and infected areas with S. parasitica on the fish body were evaluated in both tests. In the therapeutic test, all fish from the control group (without nanocomposite) had increased infected area, as well as lethargy and hemorrhage, resulting in 100% mortality. They also had reduced red blood cells, lymphocytes, neutrophils, monocytes, and thrombocytes. In group exposed to nanocomposite, higher concentrations affected mycelial growth, especially in the highest concentration (4.33 mg L− 1), reducing infected areas on the fish body by 98.70% and achieving 100% survival. The treatment with long-term bath at the lowest concentration (0.54 mg L− 1) had increased values of neutrophils. In the prophylactic test, fish groups without handling stress and the methylene blue had no clinical signs or mortality. However, the fish group submitted to handling stress presented the highest prevalence and infected areas resulting in 100% mortality. However, the increasing of nanocomposite concentration promoted less oomycete prevalence, pathology intensity, and mortality. The most effective concentration in the prophylactic assay was 0.87 mg L− 1, preventing the infection without blood alterations. Then, the nanocomposite as prophylactic measured at concentration of 0.87 mg L− 1 is the best strategy to prevent S. parasitica infection in fish. MenosInfectious diseases have been the main limiting factor for international fish farming, especially saprolegniosis, which causes large economic losses. Therefore, this study evaluated the prophylactic and therapeutic effect of a nanocomposite (Silver nanoparticle plus extract of Terminalia catappa) to control Saprolegnia parasitica in tambaqui Colossoma macropomum. Two tests were carried out: 1) a therapeutic assay including long and short-term baths, containing two concentrations of nanocomposite each, on infected tambaqui and 2) a prophylactic assay where the zoospore and nanocomposite (four different concentrations) were added at the same time into water for 72 h. Mortality, prevalence index, hematology, and infected areas with S. parasitica on the fish body were evaluated in both tests. In the therapeutic test, all fish from the control group (without nanocomposite) had increased infected area, as well as lethargy and hemorrhage, resulting in 100% mortality. They also had reduced red blood cells, lymphocytes, neutrophils, monocytes, and thrombocytes. In group exposed to nanocomposite, higher concentrations affected mycelial growth, especially in the highest concentration (4.33 mg L− 1), reducing infected areas on the fish body by 98.70% and achieving 100% survival. The treatment with long-term bath at the lowest concentration (0.54 mg L− 1) had increased values of neutrophils. In the prophylactic test, fish groups without handling stress and the methylene blue had no clini... Mostrar Tudo |
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Thesagro: |
Colossoma Macropomum; Doença Animal; Infecção Contagiosa; Peixe; Piscicultura; Profilaxia; Tambaqui; Transmissão de Doença. |
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Thesaurus Nal: |
Colossoma; Fish; Infectious diseases; Saprolegnia parasitica. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159906/1/Prophylactic-and-therapeutic-effects...2023.pdf
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Marc: |
LEADER 03486naa a2200481 a 4500
001 2159906
005 2023-12-19
008 2023 bl uuuu u00u1 u #d
022 $a0044-8486
024 7 $ahttps://doi.org/10.1016/j.aquaculture.2023.739695$2DOI
100 1 $aMENESES, J. O.
245 $aProphylactic and therapeutic effects of a nanocomposite (silver nanoparticle plus Terminalia catappa) against Saprolegnia parasitica in tambaqui.$h[electronic resource]
260 $c2023
520 $aInfectious diseases have been the main limiting factor for international fish farming, especially saprolegniosis, which causes large economic losses. Therefore, this study evaluated the prophylactic and therapeutic effect of a nanocomposite (Silver nanoparticle plus extract of Terminalia catappa) to control Saprolegnia parasitica in tambaqui Colossoma macropomum. Two tests were carried out: 1) a therapeutic assay including long and short-term baths, containing two concentrations of nanocomposite each, on infected tambaqui and 2) a prophylactic assay where the zoospore and nanocomposite (four different concentrations) were added at the same time into water for 72 h. Mortality, prevalence index, hematology, and infected areas with S. parasitica on the fish body were evaluated in both tests. In the therapeutic test, all fish from the control group (without nanocomposite) had increased infected area, as well as lethargy and hemorrhage, resulting in 100% mortality. They also had reduced red blood cells, lymphocytes, neutrophils, monocytes, and thrombocytes. In group exposed to nanocomposite, higher concentrations affected mycelial growth, especially in the highest concentration (4.33 mg L− 1), reducing infected areas on the fish body by 98.70% and achieving 100% survival. The treatment with long-term bath at the lowest concentration (0.54 mg L− 1) had increased values of neutrophils. In the prophylactic test, fish groups without handling stress and the methylene blue had no clinical signs or mortality. However, the fish group submitted to handling stress presented the highest prevalence and infected areas resulting in 100% mortality. However, the increasing of nanocomposite concentration promoted less oomycete prevalence, pathology intensity, and mortality. The most effective concentration in the prophylactic assay was 0.87 mg L− 1, preventing the infection without blood alterations. Then, the nanocomposite as prophylactic measured at concentration of 0.87 mg L− 1 is the best strategy to prevent S. parasitica infection in fish.
650 $aColossoma
650 $aFish
650 $aInfectious diseases
650 $aSaprolegnia parasitica
650 $aColossoma Macropomum
650 $aDoença Animal
650 $aInfecção Contagiosa
650 $aPeixe
650 $aPiscicultura
650 $aProfilaxia
650 $aTambaqui
650 $aTransmissão de Doença
700 1 $aDIAS, J. A. R.
700 1 $aCUNHA, F. dos S.
700 1 $aSANTOS, H. L. dos
700 1 $aSANTOS, T. B. R.
700 1 $aSANTOS, C. C. M.
700 1 $aNOGUEIRA FILHO, R. M.
700 1 $aPAIXAO, P. E. G.
700 1 $aSOUSA, N. da C.
700 1 $aCOUTO, M. V. S. do
700 1 $aABE, H. A.
700 1 $aSANTOS, F. J. dos
700 1 $aOLIVEIRA, S. P. C. de
700 1 $aMARIA, A. N.
700 1 $aCARDOSO, J. C.
700 1 $aCOSTA, L. P. da
700 1 $aFUJIMOTO, R. Y.
773 $tAquaculture$gv. 574, 739695, 2023.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
26/11/2019 |
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Data da última atualização: |
29/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SILVA, J. do N.; MASCARIN, G. M.; CASTRO, R. de P. V. de; CASTILHO, L dos R. |
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Afiliação: |
JAQUELILNE DO NASCIMENTO SILVA, UFRJ; GABRIEL MOURA MASCARIN, CNPMA; RUI DE PAULA VIEIRA DE CASTRO, UFRJ; LEDA DOS REIS CASTILHO, UFRJ. |
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Título: |
Novel combination of a biosurfactant with entomopathogenic fungi enhances efficacy against Bemisia whitefly. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Pest Management Science, v. 75, n. 11, p. 2882-2891, 2019. |
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DOI: |
https://doi.org/10.1002/ps.5458 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Microbial surfactants are multifunctional surface‐active molecules that have been overlooked in formulating microbial biopesticides. We report a novel approach using the biosurfactant rhamnolipid (RML) against the destructive cosmopolitan insect pest Bemisia tabaci, as well as the combined action of RML with aerial conidia of two entomopathogenic fungi, Cordyceps javanica and Beauveria bassiana. RML was also tested as a suspension agent to improve the recovery rate of conidia from solid substrate for fungal preparations. The recovery rate of conidia increased dramatically (two to five times) with RML compared with a standard surfactant (Tween 80). Spraying solutions of 0.075% and 0.1% (w/v) RML on B. tabaci third instar nymphs induced 100% mortality within 4 days. Conidial suspensions at 5 × 106 conidia/mL amended with RML at 0.01% or 0.05% markedly increased nymphal mortalities and considerably reduced LC50. Conidial suspensions of B. bassiana with 0.05% RML added were more effective against whitefly nymphs (87.3% mortality) than C. javanica + RML (51.4% mortality). Our results show that this bacterium‐based RML improved the recovery rate of hydrophobic conidia, and that mixtures of RML with fungal spore suspensions increased their insecticidal activity. © 2019 Society of Chemical Industry. |
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Palavras-Chave: |
Rhamnolipid. |
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Thesagro: |
Bemisia Tabaci; Controle Biológico; Fungo Entomógeno; Mosca Branca. |
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Thesaurus NAL: |
Biological control; Biosurfactants; Cordycipitaceae; Entomopathogenic fungi. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02229naa a2200277 a 4500
001 2115262
005 2019-11-29
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1002/ps.5458$2DOI
100 1 $aSILVA, J. do N.
245 $aNovel combination of a biosurfactant with entomopathogenic fungi enhances efficacy against Bemisia whitefly.$h[electronic resource]
260 $c2019
520 $aAbstract: Microbial surfactants are multifunctional surface‐active molecules that have been overlooked in formulating microbial biopesticides. We report a novel approach using the biosurfactant rhamnolipid (RML) against the destructive cosmopolitan insect pest Bemisia tabaci, as well as the combined action of RML with aerial conidia of two entomopathogenic fungi, Cordyceps javanica and Beauveria bassiana. RML was also tested as a suspension agent to improve the recovery rate of conidia from solid substrate for fungal preparations. The recovery rate of conidia increased dramatically (two to five times) with RML compared with a standard surfactant (Tween 80). Spraying solutions of 0.075% and 0.1% (w/v) RML on B. tabaci third instar nymphs induced 100% mortality within 4 days. Conidial suspensions at 5 × 106 conidia/mL amended with RML at 0.01% or 0.05% markedly increased nymphal mortalities and considerably reduced LC50. Conidial suspensions of B. bassiana with 0.05% RML added were more effective against whitefly nymphs (87.3% mortality) than C. javanica + RML (51.4% mortality). Our results show that this bacterium‐based RML improved the recovery rate of hydrophobic conidia, and that mixtures of RML with fungal spore suspensions increased their insecticidal activity. © 2019 Society of Chemical Industry.
650 $aBiological control
650 $aBiosurfactants
650 $aCordycipitaceae
650 $aEntomopathogenic fungi
650 $aBemisia Tabaci
650 $aControle Biológico
650 $aFungo Entomógeno
650 $aMosca Branca
653 $aRhamnolipid
700 1 $aMASCARIN, G. M.
700 1 $aCASTRO, R. de P. V. de
700 1 $aCASTILHO, L dos R.
773 $tPest Management Science$gv. 75, n. 11, p. 2882-2891, 2019.
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Embrapa Meio Ambiente (CNPMA) |
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