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Fig. 3 | BMC Ecology and Evolution

Fig. 3

From: Genome-wide species delimitation analyses of a silverside fish species complex in central Mexico indicate taxonomic over-splitting

Fig. 3

The ML phylogenetic tree based on 3564 SNP loci (a) recovered three well-differentiated clades: clade I formed by species in Lake Chapala, clade II represented by species from Lake Zacapu and dams, and clade III composed by species in Lakes Pátzcuaro and Zirahuén. We observed C. sphyraena as a monophyletic group within clade I, and the subspecies C. e. copandaro from Lake Zirahuén as a differentiated cluster within clade III. Although the multi-coalescent species tree considering circa 3400 neutral SNPs (b) recovered the main genomic clusters as the rest of the genetic structure analyses and the ML phylogenetic inferences, it did not present any intra-lake divergences. c The phylogenetic inference based on mtDNA (Cytb and D-loop) failed to delineate reciprocal monophyletic groups as the ones estimated using the ddRADseq data (3564 SNP loci). The analyses of the genome-wide datasets clearly recovered well-differentiated clusters that are in agreement with the geography of the central Mexico plateau. However, none of our phylogenetic inferences showed concordance with the morphospecies nor ecotypes recognized within the humboltianum group. Numbers on branches of the main clades indicate bootstrap values. Artistic fish illustration credit: Sergio Godínez-Marrón

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