Differentiation of Spanish strains of Echinococcus granulosus using larval rostellar hook morphometry
1997
Ponce Gordo, F. | Cuesta Bandera, C.
Two multivariate statistical procedures (Principal Component Analysis and Discriminant Function Analysis) were used to analyse morphometric data from larval hooks of Spanish samples of Echinococcus granulosus previously characterized in physiological, biochemical and genetic studies. The 5 physical variables considered could be reduced to 2 functional variables ("length of hooks" and "number of hooks"). The number of hooks was found not to be a reliable character to differentiate between strains of this parasite. Three Spanish strains (sheep-cattle, pig, and horse strains) were identified; these results are compatible with those obtained using other techniques. We consider larval hook morphology as a valid criterion for identifying E. granulosa strains in Spain, with potential use for epidemiological studies.
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