Apr 16, 2020

Complete mitochondrial genomes do not distinguish phenotypically distinct lineages of Andean Coeligena hummingbirds

BioRxiv : the Preprint Server for Biology
Catalina PalaciosD. Cadena


Lack of divergence in mitochondrial DNA between species with clear phenotypic differences may be the result of low resolution of markers, incomplete lineage sorting, introgression, or the interplay of various evolutionary mechanisms acting on different traits and genomic regions through time. Previous work revealed that the Andean hummingbirds Coeligena bonapartei and C. helianthea lack genetic divergence in the mitochondrial ND2 gene, which shows variation discordant with coloration phenotype but consistent with geography. We sequenced and analyzed complete mitochondrial genomes for C. b. bonapartei, C. b. consita, C. h. helianthea and C. h. tamai to assess whether patterns revealed by ND2 analyses hold when considering the entire mitogenome, and to shed light into the evolutionary history of these hummingbirds. We found very low genetic differentiation in mitogenomes among the four lineages of Coeligena, confirming patterns based on ND2 data. Estimates of genetic differentiation, phylogenies and haplotype network analyses of complete mitogenomes did not separate phenotypically distinct taxa, but were consistent with a previously described pattern of northern vs. southern divergence along the Cordillera Oriental of Colombia. M...Continue Reading

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Mentioned in this Paper

Cell Cycle Progression
Cyclin-Dependent Kinases
APC gene
Oncoprotein p21
CCNB1 gene
Cyclin B1
Cell Proliferation
Chemically Induced
Senescence Function

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