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Baptista CT, Moreira ADS, Maia Filho FDS, Valente JDSS, Pinto NB, Trindade Junior WPD, Braga CQ, Pötter L, Pereira DIB. Purpureocillium lilacinum and Trichoderma virens for biological control of trichostrongylid parasites of sheep: an in vitro evaluation. ACTA ACUST UNITED AC 2020; 29:e006120. [PMID: 33084781 DOI: 10.1590/s1984-29612020085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 08/19/2020] [Indexed: 11/21/2022]
Abstract
The study evaluated the ovicidal activity of enzymatic extracts of Purpureocillium lilacinum and Trichoderma virens against trichostrongylid eggs from sheep. Filtered extract (FE) and macerated crude extract (MCE) were prepared from fungal cultures in minimal broth. In the experiment, 100 trichostrongylid eggs, obtained from the feces of naturally infected sheep, were exposed to fungal extracts for 24 and 48 hours/25°C. In the control group, eggs were incubated in minimal broth. The number of L1 larvae was ascertained. Each treatment consisted of four repetitions and the experiment was repeated five times. It was observed that the effect of FE and MCE of P. lilacinum and T. virens on egg hatchability differed from that of the control group. MCE of T. virens and P. lilacinum showed higher ovicidal activity than FE over both periods and at 48 hours of exposure, respectively. From the percentage reductions in hatchability of the eggs, MCE was shown to be superior to FE for both fungi. This study demonstrated the ovicidal potential of these fungi against trichostrongylid eggs. However, further studies are needed in order to identify the molecules responsible for the ovicidal effects, and to evaluate the behavior of fungal extracts in biotic and abiotic interactions.
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Affiliation(s)
- Cristiane Telles Baptista
- Laboratório de Micologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
| | - Andrios da Silva Moreira
- Laboratório de Micologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
| | - Fernando de Souza Maia Filho
- Laboratório de Micologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
| | - Júlia de Souza Silveira Valente
- Laboratório de Micologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
| | - Natália Berne Pinto
- Laboratório de Helmintologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
| | - Waldenis Pereira da Trindade Junior
- Laboratório de Micologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
| | - Caroline Quintana Braga
- Laboratório de Micologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
| | - Luciana Pötter
- Centro de Ciências Rurais, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Daniela Isabel Brayer Pereira
- Laboratório de Micologia, Programa de Pós-graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil.,Departamento de Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Pelotas, RS, Brasil
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Maia Filho FDS, Fonseca ADODS, Valente JDSS, Baptista CT, Moreira ADS, Botton SDA, Pötter L, Pereira DIB. Exposure of Toxocara canis eggs to Purpureocillium lilacinum as a biocontrol strategy: an experimental model evaluation. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2019; 28:91-96. [DOI: 10.1590/s1984-29612019007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/12/2018] [Indexed: 11/22/2022]
Abstract
Abstract Purpureocillium lilacinum is a nematophagous fungus used in biological control against some parasites, including Toxocara canis. This study researched the infectivity of embryonated T. canis eggs after exposure to the fungus P. lilacinum. T. canis eggs were exposed to P. lilacinum for 15 or 30 days and subsequently administered to Swiss mice (n=20). Control group consisted of mice who received T. canis embryonated eggs without fungal exposure. Forty-eight hours after infection, heart, lung, and liver from animals of each group were collected to assess larval recovery. The organs of mice that received embryonated eggs exposed to the fungus showed a lower average larval recovery (P<0.05) suggesting that exposure of T. canis eggs to P. lilacinum was able to reduce experimental infection. Under the evaluated conditions, the interaction time between the fungus and the parasite eggs was not a significant factor in larvae recovery. P. lilacinum may be considered a promising T. canis biological control agent. However, further studies are needed to determine a protocol for the use of this fungus as a biological control agent.
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Hofstätter BDM, Oliveira da Silva Fonseca A, de Souza Maia Filho F, de Souza Silveira J, Persici BM, Pötter L, Silveira A, Antoniolli ZI, Brayer Pereira DI. Effect of Paecilomyces lilacinus, Trichoderma harzianum and Trichoderma virens fungal extracts on the hatchability of Ancylostoma eggs. Rev Iberoam Micol 2016; 34:28-31. [PMID: 27810261 DOI: 10.1016/j.riam.2016.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 12/15/2015] [Accepted: 04/08/2016] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Ancylostoma species have demanded attention due to their zoonotic potential. The use of anthelmintics is the usual method to prevent environmental contamination by Ancylostoma eggs and larvae. Nematophagous fungi have been widely used in their biological control due to the fungus ability to capture and digest free nematode forms. AIMS The aim of this study was to evaluate the effect of four different fungal extracts of Paecilomyces lilacinus (n=2), Trichoderma harzianum (n=1) and Trichoderma virens (n=1) isolates on the hatchability of Ancylostoma eggs. METHODS Fungal extracts consisted of fungal broth culture supernatant without filtration (crude extract) and filtered broth (filtered extract), macerated mycelium (crude macerate), and macerated mycelium submitted to filtration (filtered macerate). The Ancylostoma eggs were obtained from the feces of naturally infected dogs. In vitro assays were performed in five replicates and consisted of four treatments and one control group. RESULTS The activity of the fungal extracts of each evaluated fungus differed (p<0.05) from those of the control group, showing significant ovicidal activity. The hatching of the eggs suffered reduction percentages of 68.43% and 47.05% with P. lilacinus, and 56.43% with T. harzianum, when crude macerate extract was used. The reduction with the macerate extract of T. virens was slightly lower (52.25%) than that for the filtered macerate (53.64%). CONCLUSIONS The results showed that all extracts were effective in reducing the hatchability of Ancylostoma eggs. The ovicidal effect observed is likely to have been caused by the action of hydrolytic enzymes secreted by the fungi.
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Affiliation(s)
- Bianca Delgado Menezes Hofstätter
- Universidade Federal de Pelotas (UFPel), Instituto de Biología, Departamento de Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil
| | - Anelise Oliveira da Silva Fonseca
- Universidade Federal de Pelotas (UFPel), Instituto de Biología, Departamento de Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil
| | - Fernando de Souza Maia Filho
- Universidade Federal de Pelotas (UFPel), Instituto de Biología, Departamento de Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil
| | - Julia de Souza Silveira
- Universidade Federal de Pelotas (UFPel), Instituto de Biología, Departamento de Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil
| | - Beatriz Maroneze Persici
- Universidade Federal de Pelotas (UFPel), Instituto de Biología, Departamento de Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil
| | - Luciana Pötter
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais, Departamento de Zootecnia, Santa Maria, Rio Grande do Sul, Brasil
| | - Andressa Silveira
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais, Departamento de Zootecnia, Santa Maria, Rio Grande do Sul, Brasil
| | - Zaida Inês Antoniolli
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais, Departamento de Zootecnia, Santa Maria, Rio Grande do Sul, Brasil
| | - Daniela Isabel Brayer Pereira
- Universidade Federal de Pelotas (UFPel), Instituto de Biología, Departamento de Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil.
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Freitas C, Abrão F, Silva K, Almeida P, Duarte E. Fungos aeróbios no intestino grosso de borregos e de ovelhas criados em pastagens tropicais. ARQ BRAS MED VET ZOO 2012. [DOI: 10.1590/s0102-09352012000100033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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