Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing Conditions
The purpose of using nematophagous fungi as biological control agents of gastrointestinal nematodes of livestock is to reduce the build-up of infective larvae on pasture and thus avoid clinical and subclinical disease. As the interaction of fungus-larval stages takes place in the environment, it is...
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MDPI AG
2023-03-01
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| Series: | Pathogens |
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| Online Access: | https://www.mdpi.com/2076-0817/12/3/401 |
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| author | Silvina Fernández Sara Zegbi Federica Sagües Lucía Iglesias Inés Guerrero Carlos Saumell |
| author_facet | Silvina Fernández Sara Zegbi Federica Sagües Lucía Iglesias Inés Guerrero Carlos Saumell |
| author_sort | Silvina Fernández |
| collection | DOAJ |
| description | The purpose of using nematophagous fungi as biological control agents of gastrointestinal nematodes of livestock is to reduce the build-up of infective larvae on pasture and thus avoid clinical and subclinical disease. As the interaction of fungus-larval stages takes place in the environment, it is crucial to know how useful the fungal agents are throughout the seasons in areas where livestock graze all year-round. This study was designed to determine the predatory ability of the nematophagous fungus <i>Duddingtonia flagrans</i> against gastrointestinal nematodes of cattle during four experiments set up in different seasons. In each experiment, faeces containing eggs of gastrointestinal nematodes were mixed with 11,000 chlamydospores/g and deposited on pasture plots. A comparison between fungal-added faeces and control faeces without fungus were made with regard to pasture infectivity, larval presence in faecal pats, faecal cultures, faecal pat weight, and temperature inside the faecal mass. In three of the four experiments, <i>Duddingtonia flagrans</i> significantly reduced the population of infective larvae in cultures (68 to 97%), on herbage (80 to 100%), and inside the faecal pats (70 to 95%). The study demonstrated the possibility of counting on a biological control tool throughout most of the year in cattle regions with extensive grazing seasons. |
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| id | doaj.art-e4a4552486ff45fb83d6484bc55aac74 |
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| issn | 2076-0817 |
| language | English |
| last_indexed | 2024-03-11T06:03:40Z |
| publishDate | 2023-03-01 |
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| spelling | doaj.art-e4a4552486ff45fb83d6484bc55aac742023-11-17T13:09:27ZengMDPI AGPathogens2076-08172023-03-0112340110.3390/pathogens12030401Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing ConditionsSilvina Fernández0Sara Zegbi1Federica Sagües2Lucía Iglesias3Inés Guerrero4Carlos Saumell5Centro de Investigación Veterinaria de Tandil, UNCPBA-CICPBA CONICET, Tandil 7000, Buenos Aires, ArgentinaCentro de Investigación Veterinaria de Tandil, UNCPBA-CICPBA CONICET, Tandil 7000, Buenos Aires, ArgentinaCentro de Investigación Veterinaria de Tandil, UNCPBA-CICPBA CONICET, Tandil 7000, Buenos Aires, ArgentinaCentro de Investigación Veterinaria de Tandil, UNCPBA-CICPBA CONICET, Tandil 7000, Buenos Aires, ArgentinaCentro de Investigación Veterinaria de Tandil, UNCPBA-CICPBA CONICET, Tandil 7000, Buenos Aires, ArgentinaCentro de Investigación Veterinaria de Tandil, UNCPBA-CICPBA CONICET, Tandil 7000, Buenos Aires, ArgentinaThe purpose of using nematophagous fungi as biological control agents of gastrointestinal nematodes of livestock is to reduce the build-up of infective larvae on pasture and thus avoid clinical and subclinical disease. As the interaction of fungus-larval stages takes place in the environment, it is crucial to know how useful the fungal agents are throughout the seasons in areas where livestock graze all year-round. This study was designed to determine the predatory ability of the nematophagous fungus <i>Duddingtonia flagrans</i> against gastrointestinal nematodes of cattle during four experiments set up in different seasons. In each experiment, faeces containing eggs of gastrointestinal nematodes were mixed with 11,000 chlamydospores/g and deposited on pasture plots. A comparison between fungal-added faeces and control faeces without fungus were made with regard to pasture infectivity, larval presence in faecal pats, faecal cultures, faecal pat weight, and temperature inside the faecal mass. In three of the four experiments, <i>Duddingtonia flagrans</i> significantly reduced the population of infective larvae in cultures (68 to 97%), on herbage (80 to 100%), and inside the faecal pats (70 to 95%). The study demonstrated the possibility of counting on a biological control tool throughout most of the year in cattle regions with extensive grazing seasons.https://www.mdpi.com/2076-0817/12/3/401biological control<i>Duddingtonia flagrans</i>nematophagous fungigastrointestinal nematodesinfective larvaecattle |
| spellingShingle | Silvina Fernández Sara Zegbi Federica Sagües Lucía Iglesias Inés Guerrero Carlos Saumell Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing Conditions Pathogens biological control <i>Duddingtonia flagrans</i> nematophagous fungi gastrointestinal nematodes infective larvae cattle |
| title | Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing Conditions |
| title_full | Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing Conditions |
| title_fullStr | Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing Conditions |
| title_full_unstemmed | Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing Conditions |
| title_short | Trapping Behaviour of <i>Duddingtonia flagrans</i> against Gastrointestinal Nematodes of Cattle under Year-Round Grazing Conditions |
| title_sort | trapping behaviour of i duddingtonia flagrans i against gastrointestinal nematodes of cattle under year round grazing conditions |
| topic | biological control <i>Duddingtonia flagrans</i> nematophagous fungi gastrointestinal nematodes infective larvae cattle |
| url | https://www.mdpi.com/2076-0817/12/3/401 |
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