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Rodrigues JA, Feitosa TF, Vilela VLR. A systematic review on products derived from nematophagous fungi in the biological control of parasitic helminths of animals. World J Microbiol Biotechnol 2024; 40:224. [PMID: 38822201 DOI: 10.1007/s11274-024-04036-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 05/24/2024] [Indexed: 06/02/2024]
Abstract
Nematophagous fungi have been widely evaluated in the biological control of parasitic helminths in animals, both through their direct use and the use of their derived products. Fungal bioproducts can include extracellular enzymes, silver nanoparticles (AgNPs), as well as secondary metabolites. The aim of this study was to conduct a systematic review covering the evaluation of products derived from nematophagous fungi in the biological control of parasitic helminths in animals. In total, 33 studies met the inclusion criteria and were included in this review. The majority of the studies were conducted in Brazil (72.7%, 24/33), and bioproducts derived from the fungus Duddingtonia flagrans were the most commonly evaluated (36.3%, 12/33). The studies involved the production of extracellular enzymes (48.4%, 16/33), followed by crude enzymatic extract (27.2%, 9/33), secondary metabolites (15.1%, 5/33) and biosynthesis of AgNPs (9.1%, 3/33). The most researched extracellular enzymes were serine proteases (37.5%, 6/16), with efficacies ranging from 23.9 to 85%; proteases (31.2%, 5/16), with efficacies from 41.4 to 95.4%; proteases + chitinases (18.7%, 3/16), with efficacies from 20.5 to 43.4%; and chitinases (12.5%, 2/16), with efficacies ranging from 12 to 100%. In conclusion, extracellular enzymes are the most investigated derivatives of nematophagous fungi, with proteases being promising strategies in the biological control of animal helminths. Further studies under in vivo and field conditions are needed to explore the applicability of these bioproducts as tools for biological control.
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Affiliation(s)
- Jossiara Abrante Rodrigues
- Post-Graduate Program in Science and Animal Health, Federal University of Campina Grande - UFCG, Sate of Paraíba, Patos, Brazil
| | - Thais Ferreira Feitosa
- Department of Veterinary Medicine, Federal Institute of Paraíba - IFPB, State of Paraíba, Sousa, Brazil
| | - Vinícius Longo Ribeiro Vilela
- Post-Graduate Program in Science and Animal Health, Federal University of Campina Grande - UFCG, Sate of Paraíba, Patos, Brazil.
- Department of Veterinary Medicine, Federal Institute of Paraíba - IFPB, State of Paraíba, Sousa, Brazil.
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Hao L, Guo Y, Wang X, Gao M, Liu T, Ma Y, Zhang Y, Li Q, Wang R, You X. Preparation and application of biocontrol formulation of nematode-trapping fungus-Duddingtonia flagrans. Vet Parasitol 2024; 327:110119. [PMID: 38262173 DOI: 10.1016/j.vetpar.2024.110119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/12/2024] [Accepted: 01/14/2024] [Indexed: 01/25/2024]
Abstract
The use of nematophagous fungi as a biological control strategy for parasitic gastrointestinal nematodes (GINs) in livestock holds promise as an innovative alternative approach. This study aimed to evaluate the clinical efficacy of a lyophilized Duddingtonia flagrans preparation, utilized in association with the anthelmintics ivermectin or albendazole, to control GINs in Tibetan sheep on a farm based in Qinghai Province. The experimental design included five groups: D. flagrans lyophilized preparation group; D. flagrans+ ivermectin combination tablets treatment group (0.6 tablets for each 10 kg b.w. containing 106 chlamydospores of D. flagrans); D. flagrans+ albendazole combination capsules treatment group (5 capsules for each 10 kg b.w. containing 106 chlamydospores of D. flagrans); ivermectin group (0.2 mg/kg); albendazole group (15 mg/kg), and a control group; The effect of these strategies was evaluated through the analysis of feces collected directly from the animals in each group at 24 h, 48 h, 72 h,96 h and 120 h after administration, by estimating the counts of fecal egg count reduction percentage (FECR) and larval development reduction percentage (LDR). The combination of D. flagrans lyophilized preparation with either ivermectin or albendazole yielded fecal egg and larval reduction rates of up to 100% within 72 h after oral administration, outperforming the groups treated with a single anthelmintic. Moreover, the application of the lyophilized preparation of D. flagrans chlamydospores in isolation demonstrated an 89.8% larval reduction rate. The formulation containing D. flagrans showed high predatory capacity after passage through the gastrointestinal tract of sheep and was effective for controlling gastrointestinal nematodes, which greatly reduced the pollution of the grassland, and avoid reinfection.
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Affiliation(s)
- Luyao Hao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, People's Republic of China; Key Laboratory of Clinical Diagnosis and Treatment of Animal Diseases, Ministry of Agriculture, National Animal Medicine Experimental Teaching Center, People's Republic of China
| | - Yuan Guo
- Vocational and Technical College of Inner Mongolia Agricultural University, China
| | - Xiaomin Wang
- Agriculture and Animal Husbandry Bureau of Karakqin Banner, Chifeng city, Inner Mongolia, People's Republic of China
| | - Mingjuan Gao
- Agriculture and Animal Husbandry Bureau of Karakqin Banner, Chifeng city, Inner Mongolia, People's Republic of China
| | - Tonghai Liu
- Tianjin Agricultural University, Tianjin, People's Republic of China
| | - Yuan Ma
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, People's Republic of China; Key Laboratory of Clinical Diagnosis and Treatment of Animal Diseases, Ministry of Agriculture, National Animal Medicine Experimental Teaching Center, People's Republic of China
| | - Yanni Zhang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, People's Republic of China; Key Laboratory of Clinical Diagnosis and Treatment of Animal Diseases, Ministry of Agriculture, National Animal Medicine Experimental Teaching Center, People's Republic of China
| | - Qiannan Li
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, People's Republic of China; Key Laboratory of Clinical Diagnosis and Treatment of Animal Diseases, Ministry of Agriculture, National Animal Medicine Experimental Teaching Center, People's Republic of China
| | - Rui Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, People's Republic of China; Key Laboratory of Clinical Diagnosis and Treatment of Animal Diseases, Ministry of Agriculture, National Animal Medicine Experimental Teaching Center, People's Republic of China.
| | - Xihuo You
- Agrichina Pharmaceutical Co.,ltd., Beijing, People's Republic of China.
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Lozano J, Cunha E, de Carvalho LM, Paz-Silva A, Oliveira M. First insights on the susceptibility of native coccidicidal fungi Mucor circinelloides and Mucor lusitanicus to different avian antiparasitic drugs. BMC Vet Res 2024; 20:63. [PMID: 38388939 PMCID: PMC10885612 DOI: 10.1186/s12917-024-03909-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 02/04/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND The combined application of predatory fungi and antiparasitic drugs is a sustainable approach for the integrated control of animal gastrointestinal (GI) parasites. However, literature addressing the possible interference of antiparasitic drugs on the performance of these fungi is still scarce. This research aimed to assess the in vitro susceptibility of six native coccidicidal fungi isolates of the species Mucor circinelloides and one Mucor lusitanicus isolate to several antiparasitic drugs commonly used to treat GI parasites' infections in birds, namely anthelminthics such as Albendazole, Fenbendazole, Levamisole and Ivermectin, and anticoccidials such as Lasalocid, Amprolium and Toltrazuril (drug concentrations of 0.0078-4 µg/mL), using 96-well microplates filled with RPMI 1640 medium, and also on Sabouraud Agar (SA). RESULTS This research revealed that the exposition of all Mucor isolates to the tested anthelminthic and anticoccidial drug concentrations did not inhibit their growth. Fungal growth was recorded in RPMI medium, after 48 h of drug exposure, as well as on SA medium after exposure to the maximum drug concentration. CONCLUSIONS Preliminary findings from this research suggest the potential compatibility of these Mucor isolates with antiparasitic drugs for the integrated control of avian intestinal parasites. However, further in vitro and in vivo studies are needed to confirm this hypothesis.
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Affiliation(s)
- João Lozano
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, Lisbon, 1300-477, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, 1300-477, Portugal
| | - Eva Cunha
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, Lisbon, 1300-477, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, 1300-477, Portugal
| | - Luís Madeira de Carvalho
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, Lisbon, 1300-477, Portugal.
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, 1300-477, Portugal.
| | - Adolfo Paz-Silva
- Control of Parasites Research Group (COPAR, GI-2120), Department of Animal Pathology, Faculty of Veterinary, University of Santiago de Compostela, Lugo, 27142, Spain
| | - Manuela Oliveira
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, Lisbon, 1300-477, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, 1300-477, Portugal
- cE3c - Centre for Ecology, Evolution and Environmental Changes & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências, Universidade de Lisboa, Lisbon, 1749-016, Portugal
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Mendes LQ, Ferraz CM, Ribeiro NRC, Ulfeldt KB, Ribeiro JCC, Merizio MF, Rossi GAM, Aguiar AARM, Araújo JVD, Soares FEDF, Vilela VLR, Braga FR. Efficacy of Duddingtonia flagrans (Bioverm®) on the biological control of buffalo gastrointestinal nematodes. Exp Parasitol 2023; 253:108592. [PMID: 37549824 DOI: 10.1016/j.exppara.2023.108592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/31/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
We evaluated the efficacy of Bioverm®, a commercial product containing Duddingtonia flagrans, on the control of buffalo (Bubalus bubalis) gastrointestinal nematodes. We randomly divided 12 buffaloes into two groups of six animals. In the treated group, each animal received a Bioverm®`s single dose of 1g (105 chlamydospores of D. flagrans) to 10 kg of live weight; in the control group, each animal received 1g of corn bran for each 10 kg of live weight as a placebo. Fecal samples were individually collected from 12, 24, 36, 48, 60 and 72 h after treatments. To examine 1) viability of chlamydospores passed through the gastrointestinal tract, 2 g of faeces and 1000 infective larvae (L3) were added to Petri dishes with 2% water-agar, and 2) to examine larval predation by D. flagrans during fecal cultures, 2000 L3 were added. In the Petri dishes, were observed significant reductions (p < 0.01) in the treated group after 48 (56.7%) and 60 h (91.5%). In the fecal cultures, significant reductions (p < 0.01) occurred in the treated group from 36 h (75%), with larval reduction up to 72 h. High larval predation rate occurred 60 h after Bioverm® administration. Bioverm® maintained viability and predation capacity after passage through the buffalo's gastrointestinal tract, showing efficacy on gastrointestinal nematodes.
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Affiliation(s)
- Luanderson Queiroz Mendes
- Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil
| | - Carolina Magri Ferraz
- Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil
| | | | - Kim Borja Ulfeldt
- Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil
| | | | - Mayara Faneli Merizio
- Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil
| | | | | | | | | | | | - Fabio Ribeiro Braga
- Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil
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Lozano J, Louro M, Almeida C, Victório AC, Melo P, Rodrigues JP, Oliveira M, Paz-Silva A, Madeira de Carvalho L. Isolation of saprophytic filamentous fungi from avian fecal samples and assessment of its predatory activity on coccidian oocysts. Sci Rep 2023; 13:8965. [PMID: 37268693 DOI: 10.1038/s41598-023-36120-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 05/30/2023] [Indexed: 06/04/2023] Open
Abstract
Fungal strains used in the biocontrol of animal gastrointestinal parasites have been mainly isolated from pasture soil, decaying organic matter, and feces from herbivores and carnivores. However, their isolation from birds and assessment of predatory activity against avian GI parasites has been scarce thus far. This research aimed to isolate filamentous fungi from avian fecal samples and evaluate their predatory activity against coccidia. A pool of 58 fecal samples from chickens, laying hens, and peacocks, previously collected between July 2020-April 2021, were used for isolation of filamentous fungi and assessment of their in vitro predatory activity against coccidian oocysts, using Water-Agar medium and coprocultures. The Willis-flotation technique was also performed to obtain concentrated suspensions of oocysts. A total of seven Mucor isolates was obtained, being the only fungal taxa identified, and all presented lytic activity against coccidia. Isolates FR3, QP2 and SJ1 had significant coccidiostatic efficacies (inhibition of sporulation) higher than 70%, while isolates FR1, QP2 and QP1 had coccidicidal efficacies (destruction of the oocysts) of 22%, 14% and 8%, respectively, after 14 days of incubation, being a gradual and time-dependent process. To our knowledge, this is the first report regarding the isolation of native predatory fungi from avian feces and demonstration of their lytic activity against coccidia.
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Affiliation(s)
- João Lozano
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477, Lisbon, Portugal.
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477, Lisbon, Portugal.
| | - Mariana Louro
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477, Lisbon, Portugal
| | - Cristina Almeida
- Exoclinic - Clínica Veterinária de Aves e Exóticos, Quinta de Santo António, 1495-049, Miraflores, Portugal
| | - Ana Cláudia Victório
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477, Lisbon, Portugal
| | - Pedro Melo
- Vetnatura - Serviços Veterinários, Lda., Calçada de Palma de Baixo, 1600-176, Lisbon, Portugal
| | | | - Manuela Oliveira
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477, Lisbon, Portugal
| | - Adolfo Paz-Silva
- Control of Parasites Research Group (COPAR, GI-2120), Department of Animal Pathology, Faculty of Veterinary, University of Santiago de Compostela, 27142, Lugo, Spain
| | - Luís Madeira de Carvalho
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477, Lisbon, Portugal
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Rodrigues JA, Roque FL, Lima BA, Silva Filho GM, Oliveira CSM, Sousa LC, Silva ALP, Lima EF, Feitosa TF, Braga FR, Araújo JV, Vilela VLR. Control of sheep gastrointestinal nematodes on pasture in the tropical semiarid region of Brazil, using Bioverm® (Duddingtonia flagrans). Trop Anim Health Prod 2022; 54:179. [PMID: 35511381 DOI: 10.1007/s11250-022-03181-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/22/2022] [Indexed: 11/28/2022]
Abstract
We aimed to evaluate a Brazilian commercial formulation of the fungus Duddingtonia flagrans (Bioverm®) for controlling gastrointestinal nematodes in sheep kept on native pasture in the Caatinga biome, in the semiarid region of Brazil. Twenty ewes, aged between 12 and 18 months, were divided into two groups. In the treated group, each animal received 1 g of the Bioverm® product for each 10 kg of live weight, daily, together with commercial feed, for 6 months. In the control group, the animals received feed without Bioverm®. Each group remained throughout the experiment in a 1.2-ha paddock. Monthly counts of eggs per gram (EPG) of feces, fecal cultures, packed cell volume (PCV), weight measurements, and collection of leaf mass from the pasture were performed. There was greater reduction in EPG, greater weight gain, and less infestation by infective larvae in the paddock of the Bioverm® group, compared with the control group (p < 0.05). There was no significant difference (p ≥ 0.05) in the mean PCV percentage between the Bioverm® and control groups. In coprocultures, Haemonchus sp. was the most prevalent helminth. Bioverm® (D. flagrans) was efficient for biological control of sheep gastrointestinal nematodes in the semiarid region of Brazil.
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Affiliation(s)
- Jossiara Abrante Rodrigues
- Programa de Pós-Graduação Em Ciência E Saúde Animal, Universidade Federal de Campina Grande-UFCG, Patos, Paraiba, Brazil
| | - Francisco Leonardo Roque
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Brendo Andrade Lima
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Geraldo Moreira Silva Filho
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Clarisse Silva Menezes Oliveira
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Luana Carneiro Sousa
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Ana Luzia Peixoto Silva
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Estefany Ferreira Lima
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Thais Ferreira Feitosa
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Fábio Ribeiro Braga
- Departamento de Medicina Veterinária, Universidade Vila Velha, UVV, Vila Velha, Espirito Santo, Brazil
| | - Jackson Victor Araújo
- Departamento de Veterinária, Universidade Federal de Viçosa, UFV, Vicosa, Minas Gerais, Brazil
| | - Vinícius Longo Ribeiro Vilela
- Programa de Pós-Graduação Em Ciência E Saúde Animal, Universidade Federal de Campina Grande-UFCG, Patos, Paraiba, Brazil. .,Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil.
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Predation of the fungus Duddingtonia flagrans on infective larvae of gastrointestinal nematodes from heifers in a silvopastoral system under shaded and sunny conditions. J Helminthol 2022; 96:e20. [PMID: 35257651 DOI: 10.1017/s0022149x22000128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The objective of this study was to evaluate the predatory activity of the nematophagous fungus Duddingtonia flagrans on infective larvae of gastrointestinal nematodes from dairy heifers in different conditions (shaded and sunny) of a silvopastoral system (SPS) on an agroecological farm. Ten Jersey heifers were divided into two groups: treated (received pellets containing fungus); and control (received pellets without fungus). Twelve hours after fungus administration, faeces samples were collected for in vitro efficacy tests. The animals then remained for 8 h in the experimental pasture area. At the end of this period, 20 faecal pads (10 treated and 10 control) were selected. Pasture, faecal pad and soil collections occurred at intervals of seven days (d), totalling four assessments over 28 d. To evaluate the influence of the conditions shaded and sunny, we registered the condition of the location of each faecal pad per hour. After 12 h of gastrointestinal transit in dairy heifers, a reduction of 65% was obtained through the in vitro test. The treated group presented a lower number of infective larvae (L3) in the faecal pad and upper pasture. Differences in numbers of L3 were observed between the conditions (sunny and shaded) in the faecal pad of the control group; while in the treated group there were no differences between the conditions. The predatory activity of the fungus was efficient over time in the shaded and sunny conditions of an SPS, decreasing the parasite contamination during the pasture recovery time in a subtropical climate.
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Li S, Wang D, Gong J, Zhang Y. Individual and Combined Application of Nematophagous Fungi as Biological Control Agents against Gastrointestinal Nematodes in Domestic Animals. Pathogens 2022; 11:pathogens11020172. [PMID: 35215117 PMCID: PMC8879429 DOI: 10.3390/pathogens11020172] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/22/2022] [Accepted: 01/25/2022] [Indexed: 02/05/2023] Open
Abstract
Gastrointestinal nematodes (GINs) are a group of parasites that threaten livestock yields, and the consequent economic losses have led to major concern in the agricultural industry worldwide. The high frequency of anthelmintic resistance amongst GINs has prompted the search for sustainable alternatives. Recently, a substantial number of both in vitro and in vivo experiments have shown that biological controls based on predatory fungi and ovicidal fungi are the most promising alternatives to chemical controls. In this respect, the morphological characteristics of the most representative species of these two large groups of fungi, their nematicidal activity and mechanisms of action against GINs, have been increasingly studied. Given the limitation of the independent use of a single nematophagous fungus (NF), combined applications which combine multiple fungi, or fungi and chemical controls, have become increasingly popular, although these new strategies still have antagonistic effects on the candidates. In this review, we summarize both the advantages and disadvantages of the individual fungi and the combined applications identified to date to minimize recurring infections or to disrupt the life cycle of GINs. The need to discover novel and high-efficiency nematicidal isolates and the application of our understanding to the appropriate selection of associated applications are discussed.
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Affiliation(s)
- Shuoshuo Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University, Kunming 650032, China; (S.L.); (D.W.); (J.G.)
- School of Life Science, Yunnan University, Kunming 650032, China
| | - Da Wang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University, Kunming 650032, China; (S.L.); (D.W.); (J.G.)
- School of Life Science, Yunnan University, Kunming 650032, China
| | - Jianchuan Gong
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University, Kunming 650032, China; (S.L.); (D.W.); (J.G.)
- School of Life Science, Yunnan University, Kunming 650032, China
| | - Ying Zhang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University, Kunming 650032, China; (S.L.); (D.W.); (J.G.)
- Correspondence:
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