Parenteral Infection of White-Tailed Deer (Odocoileus virginianus) with Metacercariae of Fasciola hepatica and Fascioloides magna

1976 ◽  
Vol 62 (1) ◽  
pp. 144
Author(s):  
W. J. Foreyt ◽  
A. C. Todd
Keyword(s):  
Odocoileus Virginianus ◽  
Fasciola Hepatica ◽  
Fascioloides Magna

scholarly journals Differences in the compatibility of infection between the liver flukes Fascioloides magna and Fasciola hepatica in a Colombian population of the snail Galba sp.

2014 ◽  
Vol 89 (6) ◽  
pp. 720-726 ◽  
Author(s):  
G. Dreyfuss ◽  
A.C. Correa ◽  
F.F. Djuikwo-Teukeng ◽  
A. Novobilský ◽  
J. Höglund ◽  
...  
Keyword(s):  
Czech Republic ◽  
Larval Development ◽  
Fasciola Hepatica ◽  
Intermediate Hosts ◽  
The Czech Republic ◽  
Galba Truncatula ◽  
Fascioloides Magna ◽  
Post Exposure ◽  
Experimental Infections ◽  
Liver Flukes

AbstractExperimental infections of Galba sp. (origin, Colombia) with allopatric isolates of Fasciola hepatica from France or Fascioloides magna from the Czech Republic were carried out during five successive snail generations to determine if this lymnaeid might sustain complete larval development of either parasite. In snails exposed to F. hepatica, 7 of 400 snails harboured several rediae and only two snails contained a small number of free cercariae on day 50 post-exposure. In contrast, the intensity of F. magna infection in Galba sp. progressively increased from the F1 to F5 generations. Spontaneous cercarial shedding of F. magna occurred in 7 of 100 Galba sp. belonging to the F5 generation and the number of shed cercariae did not differ significantly from that noted in control Galba truncatula of French origin. Galba sp. from Colombia can be added to the list of potential intermediate hosts for F. magna.

Parelaphostrongylus tenuis (Nematoda) and Fascioloides magna (Trematoda) in moose of southeastern Manitoba

1974 ◽  
Vol 52 (2) ◽  
pp. 235-239 ◽  
Author(s):  
Murray W. Lankester
Keyword(s):  
Odocoileus Virginianus ◽  
Liver Damage ◽  
Alces Alces ◽  
Neurologic Disease ◽  
Suitable Host ◽  
Fascioloides Magna ◽  
Parelaphostrongylus Tenuis

Neurologic disease caused by the meningeal worm, Parelaphostrongylus tenuis (Dougherty 1945), is reported in moose of southeastern Manitoba, where the ranges of moose (Alces alces) and white-tailed deer (Odocoileus virginianus) overlap. Moose of this area are also infected commonly with the large American fiver fluke, Fascioloides magna (Bassi 1875). The moose cannot be considered a suitable host of F. magna since extensive liver damage results from infection, thick-walled cysts are formed, and mature flukes with eggs were not found in moose examined. Trematode eggs were found in liver sections of one animal but were not present in the faeces. It is suggested F. magna may be unable to persist in moose populations in the absence of a more suitable cervid host such as white-tailed deer.

scholarly journals Infección natural por Fasciola hepatica en cérvidos del Perú

2019 ◽  
Vol 26 (1) ◽  
pp. 143-148
Author(s):  
Luis A. Gomez-Puerta ◽  
José M. Angulo-Tisoc ◽  
Joel I. Pacheco ◽  
Maria T. Lopez-Urbina ◽  
Armando E. Gonzalez
Keyword(s):  
Odocoileus Virginianus ◽  
Fasciola Hepatica

En el presente trabajo se registra la infección natural por Fasciola hepaticaen un venado de cola blanca (Odocoileus virginianus) y en una taruca (Hippocamelus antisensis), ambos procedentes del departamento de Cusco. Los animales fueron remitidos al Instituto Veterinario (IVITA-Maranganí, FMV, UNMSM) por las autoridades del Servicio Nacional de Flora y Fauna (SERFOR, Sede Cusco). Durante la necropsia de los animales se colectaron seis trematodos de los conductos biliares, los cuales fueron preservados en etanol al 70%. Las observaciones morfológicas indicaron que se trataban de F. hepatica. Esto fue confirmado analizando el ADN mitocondrial de los parásitos amplificando parcialmente los genes citocromo c oxidasa subunidad 1 (cox1) y el NADH deshidrogenasa subunidad 1 (nad1). El análisis de estos genes tuvo una identidad mayor al 99% comparado con registros del banco de genes (GenBank). El presente estudio demuestra la presencia de F. hepatica en estos cérvidos, agregando así dos nuevos hospederos definitivos para el parásito.

scholarly journals Determination of ribosomal internal transcribed spacer 2 (ITS2) interspecific markers in Fasciola hepatica, Fascioloides magna, Dicrocoelium dendriticum and Paramphistomum cervi (Trematoda), parasites of wild and domestic ruminants

2010 ◽  
Vol 47 (2) ◽  
pp. 76-82 ◽  
Author(s):  
E. Bazsalovicsová ◽  
I. Králová-Hromadová ◽  
M. Špakulová ◽  
M. Reblánová ◽  
K. Oberhauserová
Keyword(s):  
Internal Transcribed Spacer ◽  
Fasciola Hepatica ◽  
Fascioloides Magna ◽  
Internal Transcribed Spacer 2 ◽  
Dicrocoelium Dendriticum ◽  
Domestic Ruminants ◽  
Molecular Differentiation ◽  
Species Specific ◽  
First Time ◽  
Paramphistomum Cervi

AbstractThe species-specific ribosomal internal transcribed spacer 2 (ITS2) markers were designed for PCR-based molecular differentiation of Fasciola hepatica, Fascioloides magna, Dicrocoelium dendriticum and Paramphistomum cervi, liver and stomach flukes of domestic and free living ruminants. Complete ITS2 sequences were obtained for D. dendriticum and P. cervi, for the later species, ITS2 structure was determined for the first time. Intraspecific variation within geographically distant populations was found to be either very low (F. hepatica; D. dendriticum) or even absent (F. magna; P. cervi). ITS2 regions with the absence of intraspecific polymorphisms but with interspecific sequence heterogeneity were applied for design of speciesspecific primers. The specificity of developed primers was tested on genomic DNA isolated from adult individuals of studied fluke species. Application of the primers is of particular value for molecular differentiation of morphologically hardly distinguishable F. hepatica, F. magna and P. cervi eggs after coprological examinations.

Prevalence and intensity of infections in the lymnaeid snail Omphiscola glabra experimentally infected with Fasciola hepatica, Fascioloides magna and Paramphistomum daubneyi

2007 ◽  
Vol 81 (1) ◽  
pp. 7-12 ◽  
Author(s):  
G. Dreyfuss ◽  
A. Novobilský ◽  
P. Vignoles ◽  
V. Bellet ◽  
B. Koudela ◽  
...  
Keyword(s):  
Intermediate Host ◽  
Larval Development ◽  
Fasciola Hepatica ◽  
Fascioloides Magna ◽  
Post Exposure ◽  
Cercarial Production ◽  
Lymnaeid Snail

AbstractSingle and double infections of juvenile Omphiscola glabra (Gastropoda: Lymnaeidae) with Paramphistomum daubneyi and/or Fasciola hepatica were carried out to determine the redial burden and cercarial production in snails dissected at day 60 or at day 75 post-exposure (p.e.) in the laboratory at 20°C. The results were compared with those obtained with single-miracidium infections by Fascioloides magna. Compared to F. hepatica, low values were noted at day 75 p.e. for the prevalence of snail infections with P. daubneyi (4.6–8.3% instead of 23.6–25.9%), the total number of free rediae (10.7–17.9 per snail instead of 26.3–34.7), and that of free cercariae (112.8–136.9 per snail instead of 177.8–248.5). Despite a greater number of free rediae at day 75 p.e. (36.2–45.6 per snail), the prevalences of snail infections with F. magna and cercarial production were similar to those noted for F. hepatica. The results concerning F. hepatica and P. daubneyi might partly be explained by a progressive adaptation of O. glabra to sustain the larval development of these digeneans over the years, as this snail is a natural intermediate host of F. hepatica and P. daubneyi in central France since 1995. Compared with the high number of fully-grown rediae of F. magna in O. glabra, cercarial production seemed limited and this might be explained by the presence of high numbers of rediae which reduced the avaibility of nutrients for cercarial differentiation within the snail.

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