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EFFECT OF THE FILAMENTOUS FUNGUS MUCOR CIRCINELLOIDES ON THE DEVELOPMENT OF EGGS OF THE RUMEN FLUKE CALICOPHORON DAUBNEYI (PARAMPHISTOMIDAE)

EFFECT OF THE FILAMENTOUS FUNGUS MUCOR CIRCINELLOIDES ON THE DEVELOPMENT OF EGGS OF THE RUMEN... AbstractRuminants infected by Paramphistomidae flukes shed eggs in the feces, which pass through different stages in the environment until the infective stages (metacercariae) are reached. The activity of the soil fungus Mucor circinelloides on the development of eggs of the rumen fluke Calicophoron daubneyi was presently tested with 3 probes, i.e., in Petri plates, feces and an aqueous environment (tubes). The effect of the fungus was assessed by recording the numbers of undeveloped, non-viable and embryonated eggs. Non-viable eggs were considered when vacuolization occurred, the inner structures were not clearly observed, the egg-shell was broken, and/or the embryo inside was destroyed. By considering the ability of hyphae of M. circinelloides to develop in the presence of C. daubneyi eggs, attach to their surface, penetrate and destroy the inner embryo, this ovicidal effect was classified as type 3. After a period of 50 days, the percentage of undeveloped eggs in the feces of infected cattle was 40%; furthermore, 27% eggs were non-viable, and 33% were embryonated (1 miracidium inside). The addition of 4 doses of M. circinelloides spores directly onto the feces resulted in 9-31% undeveloped eggs, 38-60% non-viable eggs, and 9-21% embryonated eggs, and no statistical significances were obtained among the different doses. Placing the eggs of C. daubneyi into an aqueous solution containing 107 spores M. circinelloides/ml for 29 days resulted in 43% undeveloped eggs, 40% non-viable eggs, and 17% embryonated eggs, whereas in the controls, the percentages were 48%, 12%, and 40%, respectively. These data demonstrate the usefulness of the spores of the fungus M. circinelloides in limiting the development of the eggs of the trematode Calicophoron daubneyi. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Parasitology Allen Press

EFFECT OF THE FILAMENTOUS FUNGUS MUCOR CIRCINELLOIDES ON THE DEVELOPMENT OF EGGS OF THE RUMEN FLUKE CALICOPHORON DAUBNEYI (PARAMPHISTOMIDAE)

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The Journal of Parasitology : 1 – Jun 16, 2016

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References (33)

Publisher
Allen Press
Copyright
American Society of Parasitologists 2017
Subject
ECOLOGY-EPIDEMIOLOGY-BEHAVIOR
ISSN
0022-3395
eISSN
1937-2345
DOI
10.1645/16-76
pmid
28165868
Publisher site
See Article on Publisher Site

Abstract

AbstractRuminants infected by Paramphistomidae flukes shed eggs in the feces, which pass through different stages in the environment until the infective stages (metacercariae) are reached. The activity of the soil fungus Mucor circinelloides on the development of eggs of the rumen fluke Calicophoron daubneyi was presently tested with 3 probes, i.e., in Petri plates, feces and an aqueous environment (tubes). The effect of the fungus was assessed by recording the numbers of undeveloped, non-viable and embryonated eggs. Non-viable eggs were considered when vacuolization occurred, the inner structures were not clearly observed, the egg-shell was broken, and/or the embryo inside was destroyed. By considering the ability of hyphae of M. circinelloides to develop in the presence of C. daubneyi eggs, attach to their surface, penetrate and destroy the inner embryo, this ovicidal effect was classified as type 3. After a period of 50 days, the percentage of undeveloped eggs in the feces of infected cattle was 40%; furthermore, 27% eggs were non-viable, and 33% were embryonated (1 miracidium inside). The addition of 4 doses of M. circinelloides spores directly onto the feces resulted in 9-31% undeveloped eggs, 38-60% non-viable eggs, and 9-21% embryonated eggs, and no statistical significances were obtained among the different doses. Placing the eggs of C. daubneyi into an aqueous solution containing 107 spores M. circinelloides/ml for 29 days resulted in 43% undeveloped eggs, 40% non-viable eggs, and 17% embryonated eggs, whereas in the controls, the percentages were 48%, 12%, and 40%, respectively. These data demonstrate the usefulness of the spores of the fungus M. circinelloides in limiting the development of the eggs of the trematode Calicophoron daubneyi.

Journal

The Journal of ParasitologyAllen Press

Published: Jun 16, 2016

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