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Publication
Isolation of saprophytic filamentous fungi from avian fecal samples and assessment of its predatory activity on coccidian oocysts
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| Isolation of saprophytic flamentous fungi from avian fecal samples and assessment of its predatory activity on coccidian oocysts | 1.92 MB | Adobe PDF |
Advisor(s)
Abstract(s)
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 flamentous 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 flamentous
fungi and assessment of their in vitro predatory activity against coccidian oocysts, using Water-Agar
medium and coprocultures. The Willis-fotation technique was also performed to obtain concentrated
suspensions of oocysts. A total of seven Mucor isolates was obtained, being the only fungal taxa
identifed, and all presented lytic activity against coccidia. Isolates FR3, QP2 and SJ1 had signifcant
coccidiostatic efcacies (inhibition of sporulation) higher than 70%, while isolates FR1, QP2 and QP1
had coccidicidal efcacies (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 frst report
regarding the isolation of native predatory fungi from avian feces and demonstration of their lytic
activity against coccidia
Description
Research Areas: Science & Technology, Other Topics
Keywords
Duddingtonia-Flagrans Nematophagous Fungi Pochonia-Chlamydosporia Biological-Control Gastrointestinal Nematodes Sheep Identification Eggs Diagnosis Parasites
Pedagogical Context
Citation
Lozano J, Louro M, Almeida C, Victório AC, Melo P, Rodrigues JP, Oliveira M, Paz-Silva A, Carvalho LM. 2023. Isolation of saprophytic filamentous fungi from avian fecal samples and assessment of its predatory activity on coccidian oocysts. Scientifc Reports, 13(1):8965. DOI: 10.1038/s41598-023-36120-5
Publisher
NATURE PORTFOLIO