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Haplotype network of 29 halotypes based on mitochondrial Cytb gene in 159 individuals of A. charrua (red), A. reicherti (blue) and hybrid populations from ponds CH60 and CHN6 (yellow). Populations from ponds CHN3, CHN4, CH64 and CH54-61 (orange). The circles are proportional to the haplotype frequency. Step-mutations values higher than one are between brackets.
