Figure 4. Phylogenetic assignment of hematozoa mitochondrial DNA cytochrome b sequences originating from Alaska tundra swans (asterisks).

Closely related haplotypes are represented by a single asterisk. Reference sequences for Leucocytozoon (white circles), Plasmodium (black circles), Haemoproteus (grey circles), and Parahaemoproteus (grey squares) parasites were obtained from the National Center for Biotechnology Information. Bootstrap support values and posterior probabilities for differentiation of broad taxonomic groups are indicated.