Karyotypic Diversity and Evolution in a Sympatric Assemblage of Neotropical Electric Knifefish.

The first method reported highly significant values for Pagel’s lambda statistic (λ = 1.002, p = 3.4 × 10 -5 ) ( Pagel, 1999 ), and Blomberg’s K statistic ( K = 1.609, p = 0.001) ( Blomberg et al., 2003 ), indicating in both cases a strong phylogenetic signal for diploid number ( Figure 4A ).

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