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Discriminant factor analysis (DFA) of morphological data. (A) Clusters of different populations. Analysis revealed three clusters, rare cases area (Gorakhpur), high number cases area (Surat) and frequent cases areas (Alappuzha, Jalgaon and Tirupati) (B) Variables which discriminated between the clusters. Anal gill index, siphon index and denticles on apical pectin tooth characters discriminate among the clusters. Ellipses of probabilities are shown as circles.
