Towards a phylogenetic framework for the evolution of shakes, rattles, and rolls in Myiarchus tyrant-flycatchers (Aves: Passeriformes: Tyrannidae).

摘要: A phylogeny of 19 the 22 currently recognized species Myiarchus tyrant-flycatchers is presented. It based on 842 bp mitochondrial DNA (mtDNA) sequences from ATPase subunit 8 and 6 genes. Except for morphologically distinct M. semirufus, mtDNAs remaining 18 fall into either two clades. One comprises predominantly Caribbean Central North American taxa (Clade I), other South II). The only very broadly concordant with some vocal characters also limited morphological diversity which group well known. Paraphyly in several (M. swainsoni, tuberculifer, ferox, phaeocephalus, sagrae, stolidus) suggests that evolution, albeit resulting diversity, has been more rapid than mtDNA, or current taxonomy faulty, both. origin likely. Dispersal vicariance both appear to have involved generating present-day distribution species. Relatively recent dispersal events out America are inferred brought Clades I II broad sympatry. Jamaica colonized independently at least twice by members II. brings a historical perspective turn ecological study closely related within each major clade where they sympatric will be especially rewarding.