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| 1. |  | VAL, H. C. do; FURLANI JUNIOR, E.; PEREIRA, G. A.; SANTOS, D. M. A. dos. Avaliação da produtividade, estado nutricional e análise econômica do algodoeiro em função de doses de nitrogênio e culturas de inverno em semeadura direta. Cultura Agronômica, Ilha Solteira, SP, v. 20, n. 2, p. 93-102, 2011.| Biblioteca(s): Epagri-Sede. |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
29/08/2017 |
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Data da última atualização: |
29/08/2017 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
TANCREDO, K. R.; MARCHIORI, N. C.; PEREIRA, S. A.; MARTINS, M. L. |
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Título: |
Minimum inhibitory concentration (MIC-test) of formalin for Dactylogyrus minutus Kulwièc, 1927 (Monogenea: Dactylogyridae): in vitro test. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON MONOGENEA, 8., 2017, Brno, Czech Republic. Abstracts... Brno, Czech Republic: ISM, 2017. p. 95 |
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Idioma: |
Inglês |
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Conteúdo: |
The formaldehyde has been widely used in its diluted form as an alternative to malachite
green in the treatment of parasites and fungi. It has been used as anti-fungal and against
parasites, especially protozoans and monogeneans from the gills and body surface of fish
and immature amphibians like tadpoles. The minimum inhibitory concentration (MIC-test)
of formalin in vitro that controls the Dactylogyrus minutus Kulwièc, 1927 of Cyprinus
carpio var. koi was determined in this study. Samples of carp var. koi (1.73±0.25 g mean
weight and 4.7±0.46 cm total length) were obtained in September 2016 from a fish farm
located in Biguaçu, Santa Catarina, Brazil and transported live to Aquatic Organisms Health
Laboratory. Eight concentrations of formalin were tested: 50, 75, 100, 125, 150, 175, 200,
250 ppm. In addition, two controls were prepared, one with water from the recirculation
system and another with distilled water. Gill filaments from parasitized gill arches were
collected to obtain the adult specimens of D. minutus. Parasites were placed into 6-well flat
plates for cell culture in a volume of 3 ml per well, where each set of parasitized filaments
received a formalin concentration. Mortality observations were recorded every 5 minutes at
the highest concentrations or 10 minutes at the lowest concentrations using a
stereomicroscope. The parasites were considered dead, when the absence of movements to
the stimulus with needle was verified, as well as typical characteristics of mortality as the
wrinkling of the body. Data were submitted to analysis of variance (ANOVA) and Tukey's
test was used to compare means (p<0.05). The concentration of 200 ppm was the most lethal
to D. minutus, killing all the parasites in 16 minutes. However, for 250, 175, 125 and 75
ppm there was no statistical difference when compared to the two most lethal concentrations.
The concentration of 100 ppm took longer to act on all monogeneans, however the time (47
minutes) was not higher than the time normally recommended in fish treatment. As some
protocols indicate baths of at least 1 hour or even continuous baths, with this study, we could
guarantee the real efficacy of the formalin directly in the parasite by monitoring the time
and concentration. MenosThe formaldehyde has been widely used in its diluted form as an alternative to malachite
green in the treatment of parasites and fungi. It has been used as anti-fungal and against
parasites, especially protozoans and monogeneans from the gills and body surface of fish
and immature amphibians like tadpoles. The minimum inhibitory concentration (MIC-test)
of formalin in vitro that controls the Dactylogyrus minutus Kulwièc, 1927 of Cyprinus
carpio var. koi was determined in this study. Samples of carp var. koi (1.73±0.25 g mean
weight and 4.7±0.46 cm total length) were obtained in September 2016 from a fish farm
located in Biguaçu, Santa Catarina, Brazil and transported live to Aquatic Organisms Health
Laboratory. Eight concentrations of formalin were tested: 50, 75, 100, 125, 150, 175, 200,
250 ppm. In addition, two controls were prepared, one with water from the recirculation
system and another with distilled water. Gill filaments from parasitized gill arches were
collected to obtain the adult specimens of D. minutus. Parasites were placed into 6-well flat
plates for cell culture in a volume of 3 ml per well, where each set of parasitized filaments
received a formalin concentration. Mortality observations were recorded every 5 minutes at
the highest concentrations or 10 minutes at the lowest concentrations using a
stereomicroscope. The parasites were considered dead, when the absence of movements to
the stimulus with needle was verified, as well as typical characteristics of ... Mostrar Tudo |
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Palavras-Chave: |
Monogenea. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02897naa a2200169 a 4500
001 1126584
005 2017-08-29
008 2017 bl uuuu u00u1 u #d
100 1 $aTANCREDO, K. R.
245 $aMinimum inhibitory concentration (MIC-test) of formalin for Dactylogyrus minutus Kulwièc, 1927 (Monogenea$bDactylogyridae): in vitro test.$h[electronic resource]
260 $c2017
520 $aThe formaldehyde has been widely used in its diluted form as an alternative to malachite green in the treatment of parasites and fungi. It has been used as anti-fungal and against parasites, especially protozoans and monogeneans from the gills and body surface of fish and immature amphibians like tadpoles. The minimum inhibitory concentration (MIC-test) of formalin in vitro that controls the Dactylogyrus minutus Kulwièc, 1927 of Cyprinus carpio var. koi was determined in this study. Samples of carp var. koi (1.73±0.25 g mean weight and 4.7±0.46 cm total length) were obtained in September 2016 from a fish farm located in Biguaçu, Santa Catarina, Brazil and transported live to Aquatic Organisms Health Laboratory. Eight concentrations of formalin were tested: 50, 75, 100, 125, 150, 175, 200, 250 ppm. In addition, two controls were prepared, one with water from the recirculation system and another with distilled water. Gill filaments from parasitized gill arches were collected to obtain the adult specimens of D. minutus. Parasites were placed into 6-well flat plates for cell culture in a volume of 3 ml per well, where each set of parasitized filaments received a formalin concentration. Mortality observations were recorded every 5 minutes at the highest concentrations or 10 minutes at the lowest concentrations using a stereomicroscope. The parasites were considered dead, when the absence of movements to the stimulus with needle was verified, as well as typical characteristics of mortality as the wrinkling of the body. Data were submitted to analysis of variance (ANOVA) and Tukey's test was used to compare means (p<0.05). The concentration of 200 ppm was the most lethal to D. minutus, killing all the parasites in 16 minutes. However, for 250, 175, 125 and 75 ppm there was no statistical difference when compared to the two most lethal concentrations. The concentration of 100 ppm took longer to act on all monogeneans, however the time (47 minutes) was not higher than the time normally recommended in fish treatment. As some protocols indicate baths of at least 1 hour or even continuous baths, with this study, we could guarantee the real efficacy of the formalin directly in the parasite by monitoring the time and concentration.
653 $aMonogenea
700 1 $aMARCHIORI, N. C.
700 1 $aPEREIRA, S. A.
700 1 $aMARTINS, M. L.
773 $tIn: INTERNATIONAL SYMPOSIUM ON MONOGENEA, 8., 2017, Brno, Czech Republic. Abstracts... Brno, Czech Republic: ISM, 2017. p. 95
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