Asset Details

Description:
(A) Clines in mtDNA across two transects in a cryptic contact zone in the southwestern United States between myrtle‐type and black‐fronted type mtDNA. Points are allele frequencies in the mitochondrial ATPase genes, locations are averaged latitudes (in degrees), and colors distinguish the western (red) and eastern (blue) transects. The lines represent the best fitting clines as estimated by Cfit6 (Gay et al. ). (B) Stable hydrogen isotope data obtained from feather samples across the contact zone. The horizontal axis represents the latitude where an individual was captured (i.e., its breeding latitude). The vertical axis is the difference in degrees between this location and the predicted wintering latitude. Filled circles indicate individuals with black‐fronted mtDNA and open circles are individuals with myrtle‐type mtDNA. The arrows indicate the centers of the clines for mtDNA for the two clades shown in (A).

Credit:
Toews, D. P. L., Mandic, M., Richards, J. G., & Irwin, D. E. (2014). MIGRATION, MITOCHONDRIA, AND THE YELLOW‐RUMPED WARBLER. Evolution, 68(1), 241-255. https://doi.org/10.1111/evo.12260.