Predatory activity of Arthrobotrys oligospora and Duddingtonia flagrans on pre-parasitic larval stages of cyathostominae under different constant temperatures

Santos, Clóvis de Paula; Padilha, Terezinha; Rodrigues, Maria de Lurdes de Azevedo

doi:10.1590/s0103-84782001000500016

Cited by 10 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Such fact prevented a satisfactory evaluation of the predatory activity of the fungus from December 2007 to February 2008, when an evident increase in larval reduction percentage in the pasture was observed. The temperature averages were satisfactory for fungal activity during the whole study, according to Santos et al (2001). In their study regarding the predatory activity of D. flagrans on infective cyathostomine larvae at different temperatures, the fungus showed better reduction percentages at 25-30°C.…”

Section: Resultsmentioning

confidence: 94%

“…The predatory activity of D. flagrans upon equine nematodes was already studied in vitro, showing more than 80% efficacy in reducing the number of infective Strongylidae larvae (Bird and Herd 1995;Fernandez et al 1997;Fernandez et al 1999;Santos et al 2001). Fernandez et al (1997Fernandez et al ( , 1999 and Baudena et al (2000) also evaluated the activity of D. flagrans in the biological control of equine Strongylidae.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Predatory activity of the fungus Duddingtonia flagrans in equine strongyle infective larvae on natural pasture in the Southern Region of Brazil

et al. 2011

View full text Add to dashboard Cite

Biological control is an alternative method to reduce the population of parasites through natural predators. A promising option of biological control in the reduction of infective larvae on pasture is the use of nematophagous fungi. In this study, the efficacy of the nematophagous fungus Duddingtonia flagrans in controlling gastrointestinal nematode parasites in field-raised horses was tested. Ten foals with an average age of 12 months were divided in two groups: five males constituted the treated group and five females constituted the control group. Each group was introduced in a field of mixed pasture with approximately 5 ha. The treated group received the fungus D. flagrans at a concentration of 10(6) chlamydospores per kilogramme of animal body weight daily, mixed with horse food for 5 months. The control group did not receive the fungus. Samples were collected to perform eggs per gramme (EPG) counts weekly. Coproculture and collection of pasture were done monthly for larvae counting. No significant difference was observed in the EPG counting and in the number of larvae recovered from coprocultures, where cyathostomines, Strongylus and Trichostrongylus spp. were found after monthly larvae counting. No significant difference was observed in the EPG counts, and Trichostrongylus sp. was identified. The number of recovered larvae on pasture was significantly lower in the treated group in the last month of treatment, showing a reduction of 73.5% (p < 0.05). As such, the fungus was able to reduce the number of infective larvae in the pasture. Nevertheless, this did not reflect in a decrease of parasitic infection during the 5-month study period.

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Predatory activity of the fungus Duddingtonia flagrans in equine strongyle infective larvae on natural pasture in the Southern Region of Brazil

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Em temperaturas inferiores, a taxa de crescimento é mais lenta, ao passo que, em temperaturas superiores, o fungo não cresce (Santos, 2000). Em estudo realizado por Santos et al (2001), foi observado que entre 25 e 30°C D. flagrans reduziu acima de 90% de L 3 de ciatostomíneos. Os mesmos autores constataram que 25°C foi a temperatura que proporcionou o maior índice de desenvolvimento de ovos até L 3 desses parasitos.…”

Section: Resultsunclassified

Duddingtonia flagrans no controle de nematoides gastrintestinais de equinos em fases de vida livre

Buzatti

Santos

Fernandes

et al. 2017

Arq. Bras. Med. Vet. Zootec.

View full text Add to dashboard Cite

 RESUMOO objetivo deste estudo foi avaliar a atividade predatória do fungo Duddingtonia flagrans contra larvas infectantes (L 3 ) de nematoides gastrintestinais na pastagem e no bolo fecal de equinos, em um período de 21 dias. O delineamento experimental foi inteiramente ao acaso, com três grupos tratados (G1, G2 e G3) e um controle (C), com oito animais/grupo. 2 cada, equivalendo a repetições em triplicata para cada grupo. As fezes foram coletadas dos animais nos dias 0 (D0), 15 (D15) e 30 (D30 = sete dias após a última administração dos tratamentos) e depositadas nessas áreas de pastagem. O número de larvas presentes nos bolos fecais e na pastagem foi avaliado após 14 e 21 dias de cada etapa de deposição. A avaliação da atividade predatória de D. flagrans na pastagem e nos bolos fecais demonstrou que a redução do número de L 3 nos bolos fecais foi acompanhada pelo aumento da variável na pastagem. Não se constatou diferença significativa entre os grupos avaliados em decorrência da temperatura média registrada durante o período. As avaliações realizadas em um curto período podem ser insuficientes para a avaliação do efeito do fungo. Palavras-chave: Duddingtonia flagrans, fungos nematófagos, Equus caballus, nematoides ABSTRACT The aim of this study was to evaluate the predatory activity of the fungus Duddingtonia flagrans against infective larvae (L 3 ) of gastrointestinal nematodes of horses in the pasture and dung patch during a period of 21 days. The experimental design was completely randomized, with three groups treated (G1, G2 and G3) and a control (C),

show abstract

“…Fernández et al (1999) reported that D. flagrans reduced the number of Cooperia oncophora larvae by 70-96% at 15°C and 63-98% at 20°C. Santos et al (2001) reported that D. flagrans caused 90% reduction in the number of cyathostomes L3 larvae at 25 and 30°C. According to Buske et al (2013), the best temperature for the nematicidal action of D. flagrans was 30°C, in which the fungus was responsible for a 74.5% reduction of the L3 of Haemonchus contortus.…”

Section: Discussionmentioning

confidence: 99%

In vitrobiological control of bovine parasitic nematodes byArthrobotrys cladodes,Duddingtonia flagransandPochonia chlamydosporiaunder different temperature conditions

et al. 2020

View full text Add to dashboard Cite

Variations in temperature can affect the development of nematophagous fungi, especially when they are used in the biological control of parasitic nematodes in the pastures where cattle are reared. The aim of this work was to evaluate the effects of temperature on the performance of nematophagous fungi in the biological control of bovine parasitic nematodes. The mycelial growth, chlamydospore production and nematicidal activity of Duddingtonia flagrans, Arthrobotrys cladodes and Pochonia chlamydosporia were evaluated at 15, 20, 25, 30 and 35°C. The fungal strains achieved mycelial growth, chlamydospore production and nematicidal activity on parasitic nematodes under all temperature conditions tested. The fungi showed higher growth at intermediate temperatures (20, 25 and 30°C) than at the extremes of 15 and 35°C. At 25 and 30°C, D. flagrans realized 96.8 and 94.5% nematicidal activity on bovine parasitic nematodes, respectively. Arthrobotrys cladodes effected nematicidal activity of 85.3 and 83.5%, at 20 and 25°C, respectively. At 20 and 30°C, P. chlamydosporia achieved nematicidal activity of 81.3 and 87.4%, respectively. The maximum chlamydospore production was reached at 20, 25 and 30°C for D. flagrans, at 20 and 25°C for A. cladodes and P. chlamydosporia. The results of this study demonstrated that the tested fungal strains of D. flagrans, A. cladodes and P. chlamydosporia, when used in the biological control of bovine parasitic nematodes, were not limited by in vitro temperature variations. Therefore, the use of these strains of fungi as biological control agents of parasitic nematodes is promising.

show abstract

Predatory activity of Arthrobotrys oligospora and Duddingtonia flagrans on pre-parasitic larval stages of cyathostominae under different constant temperatures

Cited by 10 publications

References 13 publications

Predatory activity of the fungus Duddingtonia flagrans in equine strongyle infective larvae on natural pasture in the Southern Region of Brazil

Predatory activity of the fungus Duddingtonia flagrans in equine strongyle infective larvae on natural pasture in the Southern Region of Brazil

Duddingtonia flagrans no controle de nematoides gastrintestinais de equinos em fases de vida livre

In vitrobiological control of bovine parasitic nematodes byArthrobotrys cladodes,Duddingtonia flagransandPochonia chlamydosporiaunder different temperature conditions

Contact Info

Product

Resources

About