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Morphological variability in Fasciola hepatica eggs in ruminants, rodents and lagomorphs

Published online by Cambridge University Press:  05 June 2009

M. Abrous ,
A.M. Comes ,
N. Gasnier ,
D. Rondelaud ,
G. Dreyfuss ,
A. Chauvin ,
A. Ménard ,
A. Agoulon  and
J. Cabaret
M. Abrous
Affiliation:
Faculté de Médecine, Laboratoire d'Histopathologie Parasitaire, 2 rue Dr Marcland, 87025 Limoges, France
A.M. Comes
Affiliation:
INRA, Station de Pathologie Aviaire et de Parasitologie, 37380 Nouzilly, France
N. Gasnier
Affiliation:
INRA, Station de Pathologie Aviaire et de Parasitologie, 37380 Nouzilly, France Parasitologia, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo 27080, Spain
D. Rondelaud
Affiliation:
Faculté de Médecine, Laboratoire d'Histopathologie Parasitaire, 2 rue Dr Marcland, 87025 Limoges, France
G. Dreyfuss
Affiliation:
Faculté de Pharmacie, Laboratoire de Parasitologie, 2 rue Dr Marcland, 87025 Limoges, France
A. Chauvin
Affiliation:
Ecole Nationale Vétérinaire de Nantes, Laboratoire de Parasitologie, BP 40706, 44307 Nantes Cédex 03, France
A. Ménard
Affiliation:
Ecole Nationale Vétérinaire de Nantes, Laboratoire de Parasitologie, BP 40706, 44307 Nantes Cédex 03, France
A. Agoulon
Affiliation:
Ecole Nationale Vétérinaire de Nantes, Laboratoire de Parasitologie, BP 40706, 44307 Nantes Cédex 03, France
J. Cabaret*
Affiliation:
INRA, Station de Pathologie Aviaire et de Parasitologie, 37380 Nouzilly, France
*
*Author for correspondence. Fax: 33 2 47427774 E-mail: cabaret@tours.inra.fr
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Abstract

The length and width of 1297 Fasciola hepatica eggs shed in cattle hosts, 337 in sheep and 199 in nutria, were measured from several parts of France. The data were compared with those obtained from other studies in Spain, France (where rats were also investigated), Germany and the Netherlands. One way analysis of variance and discriminant analysis were used to assess differences between host origins. The distribution of length and width of eggs were analysed using skewness and kurtosis Fisher coefficients. The eggs recovered from sheep, cattle, rodents and lagomorphs were different in size: the eggs found in rodents (length L × width W in μm: 8592) and lagomorphs (L × W in μm: 9100) were smaller than those found in sheep and cattle (L×W in μm: 10,000). These morphological differences in F. hepatica eggs were host-induced in rats (L×W in μm: 9709 in cattle to 8949 in rats) and rabbits (L×W in μm: 9709 in cattle to 8432 in rabbits). These differences in size of eggs might correspond to their being less able to develop into miracidia in less frequent hosts such as rodents and rabbits.

Type
Research Papers
Information
Journal of Helminthology , Volume 72 , Issue 4 , December 1998 , pp. 313 - 317
Copyright
Copyright © Cambridge University Press 1998

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