B. Slikas, PHYLOGENY OF THE AVIAN FAMILY CICONIIDAE (STORKS) BASED ON CYTOCHROME-B SEQUENCES AND DNA-DNA HYBRIDIZATION DISTANCES, Molecular phylogenetics and evolution, 8(3), 1997, pp. 275-300
This study is a phylogenetic analysis of the avian family Ciconiidae,
the storks, based on two molecular data sets: 1065 base pairs of seque
nce from the mitochondrial cytochrome b gene and a complete matrix of
single-copy nuclear DNA-DNA hybridization distances. Sixteen of the ni
neteen stork species were included in the cytochrome b data matrix, an
d fifteen in the DNA-DNA hybridization matrix. Both matrices included
outgroups from the families Cathartidae (New World vultures) and Thres
kiornithidae (ibises, spoonbills). Optimal trees based on the two data
sets were congruent in those nodes with strong bootstrap support. In
the best-fit tree based on DNA-DNA hybridization distances, nodes defi
ning relationships among very recently diverged species had low bootst
rap support, while nodes defining more distant relationships had stron
g bootstrap support. In the optimal trees based on the sequence data,
nodes defining relationships among recently diverged species had stron
g bootstrap support, while nodes defining basal relationships in the f
amily had weak support and were incongruent among analyses. A combinab
le-component consensus of the best-fit DNA-DNA hybridization tree and
a consensus tree based on different analyses of the cytochrome b seque
nces provide the best estimate of relationships among stork species ba
sed on the two data sets. (C) 1997 Academic Press.