Predation rate of nematophagous fungi after passing through the gastrointestinal tract of goats

Silveira, Wendeo Ferreira da; Oliveira, Giselle Dias de; Braga, Fábio Ribeiro; Carvalho, L. M.; Domingues, Rafael R.; Silva, Laice Alves da; Zanúncio, José Cola; Araújo, Jackson Víctor de

doi:10.1016/j.smallrumres.2016.12.025

Cited by 13 publications

(8 citation statements)

References 31 publications

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“…The use of biological control by helminthophagous fungi provides an option to reduce the rates of contamination by larvae and, consequently, less reinfection for the animals, enabling them to develop natural immunity against the helminths. In addition, animals that receive helminthophagous fungi have higher weight gain rates, higher globular volume percentages, and lower EPG values when compared to those that do not receive the fungi [5,[67][68][69][70]. In grazing horses that received D. flagrans chlamydospores daily, strongylide counts below 200 EPG were obtained for 16 months, also verifying that they recovered normal blood values of erythrocytes, hemoglobin, and hematocrit [71].…”

Section: Advances In the Control Of Gastrointestinal Nematodes In Pasture Animalsmentioning

confidence: 77%

Recent Advances in the Control of Helminths of Domestic Animals by Helminthophagous Fungi

et al. 2021

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This review describes the advances acquired and proven in the use of helminthophagous fungi in the control of gastrointestinal helminth parasites in domestic animals. Old and well-known premises about parasitic epidemiology and the factors that can interfere with the best performance of biological control are mentioned. Some of the most promising fungi are Duddingtonia flagrans from the predatory fungi group and Pochonia chamydosporia and Mucor circinelloides from the ovicidal fungi group. These fungi produce resistance spores called chlamidospores. Bioverm® and BioWorma®, based on the fungus D. flagrans, are available as commercial. Biotechnological products such as nanoparticles and obtaining primary and secondary metabolites have already been obtained from these fungi. Because they have different mechanisms of action, ovicidal and predatory fungi, when used together, can present a complementary and synergistic action in the biological control of helminths. Therefore, future research in the search for new formulations, the association of fungi from different groups, extraction of new molecules, and nanoparticles of these fungi in the control of helminths in various domestic animals are desired.

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Section: Advances In the Control Of Gastrointestinal Nematodes In Pasture Animalsmentioning

confidence: 77%

Recent Advances in the Control of Helminths of Domestic Animals by Helminthophagous Fungi

et al. 2021

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“…This is the first study to report the predatory activity of the fungus D. flagrans in faecal pads divided into parts and evaluated over time. The nematophagous fungus D. flagrans stands out due to its large production of chlamydospores that are highly resistant to adverse conditions (Silveira et al , 2017). Its predatory activity has been widely studied in vitro (Braga et al , 2011; Silva et al , 2013; Silveira et al , 2017) since research in controlled environments ( in vitro ) is important to find fungi with the greatest potential for biological control.…”

Section: Discussionmentioning

confidence: 99%

“…The nematophagous fungus D. flagrans stands out due to its large production of chlamydospores that are highly resistant to adverse conditions (Silveira et al , 2017). Its predatory activity has been widely studied in vitro (Braga et al , 2011; Silva et al , 2013; Silveira et al , 2017) since research in controlled environments ( in vitro ) is important to find fungi with the greatest potential for biological control. However, our study demonstrates that even after gastrointestinal transit, the fungus D. Flagrans is an efficient biological control not only in vitro , but also for pasture areas.…”

Section: Discussionmentioning

confidence: 99%

Predatory activity of nematophagus fungus Duddingtonia flagrans in infective larvae after gastrointestinal transit: biological control in pasture areas and in vitro

et al. 2021

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Biological control is a strategy to decrease parasitic populations, and the action takes place through natural antagonists in the environment. We studied the predatory activity of the fungus Duddingtonia flagrans in infective larvae (L3) of gastrointestinal nematodes after gastrointestinal transit. Ten heifers were divided into two groups: treated (animals received pellets containing fungus) and control (animals received pellets without fungus). Twelve hours after administration, faeces samples were collected for in vitro efficacy tests. The animals then remained for 7 h in the experimental pasture area. At the end of this period, 20 faecal pads (ten treated and ten control) were selected at random. Pasture, faecal pad and soil collections occurred with an interval of 7 days, totalling four assessments. In vitro activity demonstrated that fungi effectively preyed on L3, achieving a reduction percentage of 88%. In the faecal pad of the pasture area, there was a difference (P < 0.05) between collections 3 and 4 for both groups; in the treated group a reduction of 65% was obtained, while in the control group there was an increase of 217% in the number of L3. The recovery of L3 in the soil and in the pasture was similar in both groups. There was no influence (P = 0.87) of the passage time on the fungus predatory activity. Duddingtonia flagrans demonstrated the ability to survive gastrointestinal transit in the animals, reducing the number of L3 in the faeces, indicating that this biological control has great potential in the control of worm infections.

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“…Twenty female Saanen goats (age, 4 months; mean weight, 12 ± 1.93 kg) that had not received anthelmintic treatment previously and had egg counts per gram of faeces (EPGs) ≥ 500 were used. The animals were divided into two groups: group 1 (D. flagrans group), in which each animal received 3 g of pellets containing 0.6 g of D. flagrans mycelia per 10 kg of body weight twice a week for four months; and group 2 (control group), in which each animal received 3 g of fungus-free pellets per 10 kg of body weight twice a week for four months (A. R. Silva et al, 2011;Silveira et al, 2017).…”

Section: Experimental and Animal Testingmentioning

confidence: 99%

“…The use of nematophagous fungi in sodium alginatebased formulations is a promising option for in vitro and in vivo control of parasites of various domestic animal species, including goats, by producing traps that capture and fix nematodes by destroying their internal organs (Paraud, Pors, & Chartier, 2007;Braga et al, 2009;A. R. Silva, Araújo, Braga, Alves, & Frassy, 2011;Vilela et al, 2013;Silveira et al, 2017). Fungi pelleted in sodium alginate can be kept in stock and are made from inert materials, allowing their use mixed in food supplement supplied to herds.…”

Section: Introductionmentioning

confidence: 99%

Use of Duddingtonia flagrans in the control of gastrointestinal nematodes of feedlot goats

Vilela

Feitosa

Braga

et al. 2020

SCA

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This study aimed to evaluate the use of a sodium alginate matrix-pelletized formulation of Duddingtonia flagrans for biological control of gastrointestinal nematodiasis in feedlot goats in the semiarid region of Northeastern Brazil. We used 20 Saanen female goats (age, 4 months; average weight, 12 kg) that did not receive anthelmintic treatment and had counting of eggs per gram of faeces (EPGs) ? 500. The animals were divided into two groups: in group 1 (D. flagrans group), each animal received 3 g of pellets (0.6 g of D. flagrans mycelium) per 10 kg of body weight, twice a week, over 4 months; and in group 2 (control group), each animal received 3 g of pellets without fungus per 10 kg of body weight, twice a week, over 4 months. Each group was maintained in a separate 15-m2 stall. Larval cultures and measurements of weight, EPG, and packed cell volume (PCV) were performed every 15 days. We observed low EPG levels in the D. flagrans group throughout the experimental period, with a significant difference (p < 0.05) on day 30 and from day 60, having, at the end of the experiment, average OPG values of only 150, reduction of 92.3% when compared to control group. Haemonchus sp. was the most prevalent helminth in all larval cultures. The D. flagrans group showed a mean weight gain of 8.8 kg at the end of the experiment (p < 0.05), while the control group showed a mean weight gain of 4.8 kg. The best PCV results (p < 0.05) were also observed in the D. flagrans group from day 30. Thus, the use of D. flagrans pellets in a sodium alginate matrix was effective in controlling gastrointestinal nematodiasis of feedlot goats in the semiarid region of Northeastern Brazil.

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Predation rate of nematophagous fungi after passing through the gastrointestinal tract of goats

Cited by 13 publications

References 31 publications

Recent Advances in the Control of Helminths of Domestic Animals by Helminthophagous Fungi

Recent Advances in the Control of Helminths of Domestic Animals by Helminthophagous Fungi

Predatory activity of nematophagus fungus Duddingtonia flagrans in infective larvae after gastrointestinal transit: biological control in pasture areas and in vitro

Use of Duddingtonia flagrans in the control of gastrointestinal nematodes of feedlot goats

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