| Registro completo |
| Provedor de dados: |
Organic Eprints
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| País: |
Germany
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| Título: |
Evaluation of soil microfungi as biological control agents against eggs of animal parasitic nematodes
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| Autores: |
Thapa, Sundar
Meyling, Nicolai V.
Katakam, Kiran Kumar
Thamsborg, Stig Milan
Mejer, Helena
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| Data: |
2013-08
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| Ano: |
2013
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| Palavras-chave: |
Health and welfare
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| Resumo: |
Thick-shelled eggs of ascarid nematodes have been reported to remain infective in the environment for several years, thus posing a prolonged risk of infection to animal livestock and/or humans. An in vitro study was therefore conducted to evaluate the negative impact of two species of soil microfungi, Pochonia chlamydosporia and Purpureocillium lilacinum (syn. Paecilomyces lilacinus), on the viability of Ascaridia galli, Toxocara canis and Ascaris suum eggs. Approximately 150 fresh eggs of individual ascarid species were embryonated on a 2% water agar in Petri dishes with or without a fungus (P. chlamydospria or P. lilacinum). On days 7, 14, 21, 28, 35 and 42 post experimental set up (p.s.), the viability of the eggs from each experimental group was evaluated (destructive sampling). By day 14 p.s., P. chlamydosporia had reduced the viability of A. galli and T. canis eggs by 70-86% and 52-67%, respectively, compared to the controls. In contrast, P. lilacinum had reduced the viability of A. galli and T. canis eggs by only 17-30% and 6-28%, respectively. Neither fungal species was found to be effective against A. suum eggs (<4% reduction in both cases). These results indicate interspecies differences in the susceptibility of ascarid eggs to soil microfungi. Ascaridia galli and T. canis eggs seemed to have been degenerated mainly due to hydrolysis of shells by fungal enzymes. The present study demonstrates that P. chlamydosporia may potentially be utilized as a biological control agent against A. galli and T. canis egg contaminations in the soil environment.
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| Tipo: |
Conference paper, poster, etc.
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| Identificador: |
http://orgprints.org/27372/7/27372.pdf
Thapa, Sundar; Meyling, Nicolai V.; Katakam, Kiran Kumar; Thamsborg, Stig Milan and Mejer, Helena (2013) Evaluation of soil microfungi as biological control agents against eggs of animal parasitic nematodes. Poster at: Society for Invertebrate Pathology, 46th annual meeting, Pittsburgh, USA. [Completed]
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| Relação: |
http://orgprints.org/27372/
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| Formato: |
application/pdf
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