Hongos nematófagos utilizados para el control biológico de nematodos gastrointestinales en el ganado y sus formas de administración

Sagüés, María Federica; Purslow, Peter P.; Fernández, Silvina; Fusé, L. A.; Iglesias, Lucía; Saumell, Carlos

doi:10.1016/j.riam.2011.06.009

Cited by 19 publications

(15 citation statements)

References 30 publications

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“…Se han realizado estudios tendientes a encontrar vehículos o medios apropiados que garanticen la viabilidad de los hongos para su administración a los animales; es decir, que luego de consumidos por los bovinos, mantengan su capacidad de reproducirse y atrapar larvas de nematodos gastrointestinales en el estiércol de dichos bovinos. Entre las principales formas de administración se mencionan granos de cereales, bloques minerales, bloques energéticos, capsulas de alginato y los bolos de liberación controlada (Sagüés et al, 2011).…”

Section: Impacto Ambiental Del Uso De Hongos Nematófagosunclassified

“…Las estructuras de captura de estos hongos fueron anillos simples, redes simples y, predominantemente, redes tridimensionales -consideradas las más eficientes- (Liu, 2009, Sagüés et al, 2011. Estas estructuras, junto con la morfología de los conidióforos, número de células, morfología y tamaño de los conidios y la formación o no de clamidosporas, indicaban que los asilamientos obtenidos corresponden a los señalados en la tabla 31.…”

Section: Segunda Parteunclassified

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Control sostenible de los nematodos gastrointestinales en rumiantes

Lara¹

2014

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65 2. 1. SITUACIÓN OVINA Y CAPRINA 66 2.2 SITUACIÓN BOVINA 72 2.3 SITUACIÓN EN EQUINOS 78 2.4 ORIGEN DE LA RESISTENCIA 80 2.5 CLASES DE RESISTENCIA 82 2.5. 1 Resistencia cruzada 82 2.5.2 Resistencia paralela o colateral 82 2.5.3 Resistencia múltiple o cruzada inespecífica 82 2.6 ASPECTOS GENÉTICOS EN EL DESARROLLO DE LA RESISTENCIA 84 2.6. 1 Factores que influyen en la presión de selección 86 2.6.2 Manejo de la presión de selección 87 2.7. FACTORES QUE CONTRIBUYEN AL DESARROLLO Y EXTENSIÓN DE LA RESISTENCIA 88 2.7. 1 Potencial biótico o reproductivo de los parásitos 89 2.7.2 Característica genética de los parásitos 90 2.7.3 Tamaño de la población en refugio en la época de los tratamientos 90 2.7.4 Intensidad o frecuencia de los tratamientos 96 2.7.5 Introducción de cepas de parásitos resistentes 97 Sitio Argentino de Producción Animal 7. 11.4 Preparación de agar-agua 286 7. 11.5 Lavado de larvas de nematodos gastrointestinales en solución de sacarosa 287 7. 11.6 Recuento de larvas L3 de nematodos gastrointestinales 289 7. 11.7 Evaluación de la capacidad nematófaga in vitro 289

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Section: Impacto Ambiental Del Uso De Hongos Nematófagosunclassified

Section: Segunda Parteunclassified

Control sostenible de los nematodos gastrointestinales en rumiantes

Lara¹

2014

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“…Different alternatives to control GPN other than the use of AD have been searched during the last decades [8]. The potential use of natural-nematode antagonists against GPN of cattle and small ruminants as a biotechnological tool is being developed in some countries around the world [9–13]. Natural-nematode enemies act as bioregulator agents of nematode populations in soil.…”

Section: Introductionmentioning

confidence: 99%

“…These free-living nematodes and a wide variety of soil nematodes play an important role in different biological and ecological processes. These nematodes as a whole miscellaneous population share the same habitat soil with a number of different microorganisms; some of which act as natural predators of nematodes, that is, nematophagous fungi such as Duddingtonia flagrans [9] and Clonostachys rosea [15, 16]. Nematophagous fungi are a group of microfungi living in soil and they have the capacity to differentiate their mycelia in trapping devices to capture, destroy, and feed on soil nematodes acting as the main bioregulators of the nematode population in soil [9].…”

Section: Introductionmentioning

confidence: 99%

“…These nematodes as a whole miscellaneous population share the same habitat soil with a number of different microorganisms; some of which act as natural predators of nematodes, that is, nematophagous fungi such as Duddingtonia flagrans [9] and Clonostachys rosea [15, 16]. Nematophagous fungi are a group of microfungi living in soil and they have the capacity to differentiate their mycelia in trapping devices to capture, destroy, and feed on soil nematodes acting as the main bioregulators of the nematode population in soil [9]. The use of these fungi has been considered as a sustainable control strategy of nematodes of cattle [12] and sheep [17].…”

Section: Introductionmentioning

confidence: 99%

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In Vitro Lethal Activity of the Nematophagous Fungus Clonostachys rosea (Ascomycota: Hypocreales) against Nematodes of Five Different Taxa

Rodríguez-Martínez

Gives

Marcelino

et al. 2018

BioMed Research International

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This study was aimed to evaluate the in vitro lethal activity of the nematophagous fungi Clonostachys rosea against 5 nematodes species belonging to different taxa. Two groups of 35 Petri dishes (PD) each were divided into 5 series of 7 (PD). Group 1 (series 1, 2, 3, 4, and 5) contained only water agar; meanwhile group 2 plates (series 6, 7, 8, 9, and 10) contained C. rosea cultures growth on water agar. Every plate from the two groups was added with 500 nematodes corresponding to the following genera/specie: Haemonchus contortus, Caenorhabditis elegans, Rhabditis sp., Panagrellus redivivus, and Butlerius sp. After 5-day incubation at room temperature, free (nontrapped) larvae were recovered from plates using the Baermann funnel technique. Recovered nematodes were counted and compared with their proper controls. Results shown an important reduction percentage of the nematode population attributed to the fungal lethal activity as follows: H. contortus (L3) 87.7%; C. elegans 94.7%; Rhabditis sp. 71.9%; P. redivivus 92.7%; and Butlerius sp. 100% (p ≤ 0.05). The activity showed by C. rosea against the H. contortus can be crucial for further studies focused to the biological control of sheep haemonchosis, although the environmental impact against beneficial nematodes should be evaluated.

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In vitro evaluation of physicochemical variables on the nematophagous fungus Duddingtonia flagrans

et al. 2021

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Duddingtonia flagrans is a biological alternative to the use of anthelmintic drugs in ruminants. This fungus must be ingested by the animal, pass through the cavities of the digestive tract and reach the feces where it develops traps that capture the nematodes. The severe conditions encountered in this process negatively affect the fungus, which is reflected in the low recovery rates compared to the amount administered. The aim of this study was to evaluate independently the in vitro effect of typical physical and chemical conditions of the gastrointestinal cavities of ruminants on the concentration, viability, and the in vitro nematode predatory ability of the chlamydospores of D. flagrans. The factors evaluated individually were pH (2, 6, and 8), temperature (28 ± 2°C and 39 ± 2°C), exposure to artificial saliva, and milling. The results showed that the concentration and viability of D. flagrans were not affected by the action of pH, temperature, milling, or exposure to artificial saliva. Regarding the in vitro nematode predatory ability, a reduction was observed after the milling process and the exposure for 24 h at different pH.

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Hongos nematófagos utilizados para el control biológico de nematodos gastrointestinales en el ganado y sus formas de administración

Cited by 19 publications

References 30 publications

Control sostenible de los nematodos gastrointestinales en rumiantes

Control sostenible de los nematodos gastrointestinales en rumiantes

In Vitro Lethal Activity of the Nematophagous Fungus Clonostachys rosea (Ascomycota: Hypocreales) against Nematodes of Five Different Taxa

In vitro evaluation of physicochemical variables on the nematophagous fungus Duddingtonia flagrans

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