Phenotypic comparison of allopatric populations of Fasciola hepatica and Fasciola gigantica from European and African bovines using a computer image analysis system (CIAS)

The quantification of the different sizes and shapes of Fasciola hepatica and Fasciola gigantica from bovines has been achieved for the first time in natural allopatric populations. Linear measurements, areas and ratios of gravid adults and eggs of F. hepatica (from France and Spain) and F. gigantic...

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Bibliographic Details
Published in:Parasitology research (1987) 2006-09, Vol.99 (4), p.368-378
Main Authors: Periago, M V, Valero, M A, Panova, M, Mas-Coma, S
Format: Article
Language:English
Subjects:
Africa
Animals
Cattle
Environment
Europe
Fasciola hepatica - anatomy & histology
Fascioliasis - parasitology
Fascioliasis - veterinary
Image Processing, Computer-Assisted - methods
Parasitic Diseases, Animal - parasitology
Phenotype
Social Isolation
Species Specificity
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Summary:The quantification of the different sizes and shapes of Fasciola hepatica and Fasciola gigantica from bovines has been achieved for the first time in natural allopatric populations. Linear measurements, areas and ratios of gravid adults and eggs of F. hepatica (from France and Spain) and F. gigantica (from Burkina Faso) were analysed using a computer image analysis system and an allometric model: (y2m - y2)/y2 = c[(y1m - y1)/y1](b), where y1 = body area or body length, y2 = one of the measurements analysed, y1m, y2m = maximum values towards which y1 and y2, respectively, tend and c, b = constants. All the measurements overlap in the two fasciolids, apart from the distance between the ventral sucker and the posterior end of the body, body roundness and body length/body width ratio. The results obtained may be useful in Fasciola species identification in countries where both species coexist.
ISSN:0932-0113
1432-1955
DOI:10.1007/s00436-006-0174-3