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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
05/12/2018 |
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Data da última atualização: |
09/01/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FIGUEIREDO, A.; AGNOLON, I. C.; LOPES, L. G.; GIGLIOTI, R.; CHAGAS, A. C. de S. |
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Afiliação: |
Amanda Figueiredo, UNESP; Isabela Cabeça Agnolon, UNICEP; Louyse Gabrielli Lopes, UNICEP; Rodrigo Giglioti, UNESP; ANA CAROLINA DE SOUZA CHAGAS, CPPSE. |
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Título: |
Comparative study of hatching estimation methods of Rhipicephalus (Boophilus) microplus eggs. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Veterinary Parasitology, v.264, p.35-38, dec. 2018. |
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ISSN: |
1873-2550 |
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Idioma: |
Inglês |
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Conteúdo: |
Reproductive parameters of Rhipicephalus (Boophilus) microplus are often evaluated. They are good indicators of resistance to commercial acaricides and of plant extracts? efficacy. The objective of this study was to compare the techniques: visual estimation and quantification by sampling used in the Adult Immersion Test (AIT) to calculate the hatching rate of eggs. Engorged females collected from cattle were subjected to the AIT with plant extracts and kept in an incubator for oviposition. The egg hatching was evaluated in 210 syringes by visual estimation (%). Then, eggs and larvae were counted into samples of 100 individuals, in three repetitions by stereo microscope. Significant differences were found between the two tests (p?0.05). The egg hatching average of visual estimation was higher than the quantification by sampling, 56.8?48.0, respectively (correlation=0.85). We found that the visual assessment leads to a higher estimate of larvae in relation to eggs, because the infertile eggs can be concealed in the center of the syringe. In quantification by sampling, no statistical differences (p=0.99) were observed in the pairwise counts between the three samples (48.1 ± 26.6%, 47.8 ± 26.9%, 48.1 ± 26.5%) (correlation of repetitions=0.96). This suggests that counting one sample is sufficient and the result should not differ much, regardless of the evaluator. Regarding the cutoff point of tick resistance status (95%), both methods are reliable. This study contributes to improvement of the AIT and can stimulate researchers to choose more accurate techniques for the assessment of egg hatching. MenosReproductive parameters of Rhipicephalus (Boophilus) microplus are often evaluated. They are good indicators of resistance to commercial acaricides and of plant extracts? efficacy. The objective of this study was to compare the techniques: visual estimation and quantification by sampling used in the Adult Immersion Test (AIT) to calculate the hatching rate of eggs. Engorged females collected from cattle were subjected to the AIT with plant extracts and kept in an incubator for oviposition. The egg hatching was evaluated in 210 syringes by visual estimation (%). Then, eggs and larvae were counted into samples of 100 individuals, in three repetitions by stereo microscope. Significant differences were found between the two tests (p?0.05). The egg hatching average of visual estimation was higher than the quantification by sampling, 56.8?48.0, respectively (correlation=0.85). We found that the visual assessment leads to a higher estimate of larvae in relation to eggs, because the infertile eggs can be concealed in the center of the syringe. In quantification by sampling, no statistical differences (p=0.99) were observed in the pairwise counts between the three samples (48.1 ± 26.6%, 47.8 ± 26.9%, 48.1 ± 26.5%) (correlation of repetitions=0.96). This suggests that counting one sample is sufficient and the result should not differ much, regardless of the evaluator. Regarding the cutoff point of tick resistance status (95%), both methods are reliable. This study contributes to impro... Mostrar Tudo |
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Palavras-Chave: |
Adult immersion test (AIT); Cattle tick; Methods of larvae estimation; Quantification by sampling; Rhipicephalus (Boophilus) microplus; Visual estimation. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/187834/1/ComparativeStudy.pdf
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Marc: |
LEADER 02408naa a2200253 a 4500
001 2100813
005 2019-01-09
008 2018 bl uuuu u00u1 u #d
022 $a1873-2550
100 1 $aFIGUEIREDO, A.
245 $aComparative study of hatching estimation methods of Rhipicephalus (Boophilus) microplus eggs.$h[electronic resource]
260 $c2018
520 $aReproductive parameters of Rhipicephalus (Boophilus) microplus are often evaluated. They are good indicators of resistance to commercial acaricides and of plant extracts? efficacy. The objective of this study was to compare the techniques: visual estimation and quantification by sampling used in the Adult Immersion Test (AIT) to calculate the hatching rate of eggs. Engorged females collected from cattle were subjected to the AIT with plant extracts and kept in an incubator for oviposition. The egg hatching was evaluated in 210 syringes by visual estimation (%). Then, eggs and larvae were counted into samples of 100 individuals, in three repetitions by stereo microscope. Significant differences were found between the two tests (p?0.05). The egg hatching average of visual estimation was higher than the quantification by sampling, 56.8?48.0, respectively (correlation=0.85). We found that the visual assessment leads to a higher estimate of larvae in relation to eggs, because the infertile eggs can be concealed in the center of the syringe. In quantification by sampling, no statistical differences (p=0.99) were observed in the pairwise counts between the three samples (48.1 ± 26.6%, 47.8 ± 26.9%, 48.1 ± 26.5%) (correlation of repetitions=0.96). This suggests that counting one sample is sufficient and the result should not differ much, regardless of the evaluator. Regarding the cutoff point of tick resistance status (95%), both methods are reliable. This study contributes to improvement of the AIT and can stimulate researchers to choose more accurate techniques for the assessment of egg hatching.
653 $aAdult immersion test (AIT)
653 $aCattle tick
653 $aMethods of larvae estimation
653 $aQuantification by sampling
653 $aRhipicephalus (Boophilus) microplus
653 $aVisual estimation
700 1 $aAGNOLON, I. C.
700 1 $aLOPES, L. G.
700 1 $aGIGLIOTI, R.
700 1 $aCHAGAS, A. C. de S.
773 $tVeterinary Parasitology$gv.264, p.35-38, dec. 2018.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
23/11/2021 |
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Data da última atualização: |
23/11/2021 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
MOURA, P. F.; RECH, K. S.; OLIVEIRA, C. F. de; OLIVEIRA, C. da S. P. de; HIROTA, B. C. K.; DIAS, J. de F. G.; MIGUEL, O. G.; AUER, C. G.; MIGUEL, M. D. |
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Afiliação: |
PAULA FRANCISLAINE MOURA, UFPR; KATLIN SUELLEN RECH, UFPR; CAMILA FREITAS DE OLIVEIRA, UFPR; CRISTIANE DA SILVA PAULA DE OLIVEIRA, UFPR; BEATRIZ CRISTINA KONOPATZKI HIROTA, UFPR; JOSIANE DE FÁTIMA GASPARI DIAS, UFPR; OBDULIO GOMES MIGUEL, UFPR; CELSO GARCIA AUER, CNPF; MARILIS DALLARMI MIGUEL, UFPR. |
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Título: |
Phytopathogenic fungi as an alternative and sustainable source of chitin. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: COSTA, A. C. M. de S. F. da; MAIA NETO, L. da S.; SILVA, N. W. F. da (org.). Internacional saúde única (interface mundial). 3. ed. Recife: Even3 Publ., 2021. p. 68-75. |
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ISBN: |
978-65-5941-339-3 |
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Idioma: |
Inglês |
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Conteúdo: |
Diplodia pinea, Bjerkandera adusta e Armillaria sp. são espécies de fungos patogênicos que causam doenças importantes nas plantas. Neste trabalho, as condições de cultivo para os fungos D. pinea, B. adusta e Armillaria sp. foram avaliadas para otimizar a geração de biomassa e foram investigadas a interferência de alguns fatores na produção de metabólito. Desta forma, verificou-se a capacidade do micélio fúngico em produzir quitina. O polímero com aplicação na área farmacêutica e de biotecnologia foi isolado, identificado e quantificado. |
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Palavras-Chave: |
Quitina. |
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Thesagro: |
Biotecnologia; Fungo. |
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Thesaurus NAL: |
Biotechnology; Chitin; Fungi. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01497naa a2200301 a 4500
001 2136454
005 2021-11-23
008 2021 bl uuuu u00u1 u #d
020 $a978-65-5941-339-3
100 1 $aMOURA, P. F.
245 $aPhytopathogenic fungi as an alternative and sustainable source of chitin.$h[electronic resource]
260 $c2021
520 $aDiplodia pinea, Bjerkandera adusta e Armillaria sp. são espécies de fungos patogênicos que causam doenças importantes nas plantas. Neste trabalho, as condições de cultivo para os fungos D. pinea, B. adusta e Armillaria sp. foram avaliadas para otimizar a geração de biomassa e foram investigadas a interferência de alguns fatores na produção de metabólito. Desta forma, verificou-se a capacidade do micélio fúngico em produzir quitina. O polímero com aplicação na área farmacêutica e de biotecnologia foi isolado, identificado e quantificado.
650 $aBiotechnology
650 $aChitin
650 $aFungi
650 $aBiotecnologia
650 $aFungo
653 $aQuitina
700 1 $aRECH, K. S.
700 1 $aOLIVEIRA, C. F. de
700 1 $aOLIVEIRA, C. da S. P. de
700 1 $aHIROTA, B. C. K.
700 1 $aDIAS, J. de F. G.
700 1 $aMIGUEL, O. G.
700 1 $aAUER, C. G.
700 1 $aMIGUEL, M. D.
773 $tIn: COSTA, A. C. M. de S. F. da; MAIA NETO, L. da S.; SILVA, N. W. F. da (org.). Internacional saúde única (interface mundial). 3. ed. Recife: Even3 Publ., 2021. p. 68-75.
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Embrapa Florestas (CNPF) |
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