Ancestral State Reconstruction of Migration: Multistate Analysis Reveals Rapid Changes in New World Orioles (Icterus SPP)
نویسندگان
چکیده
منابع مشابه
Melanin coloration in New World orioles II: ancestral state reconstruction reveals lability in the use of carotenoids and phaeomelanins
Although many animals use carotenoids to produce bright yellow, orange, and red colors, an increasing number of studies have found that other pigments, such as melanins, may also be used to produce bright colors. Yet, almost nothing is known about the evolutionary history of this colorful melanin use. We used reflectance spectrometry to determine whether colors in New World orioles were predomi...
متن کاملCorrelated evolution of migration and sexual dichromatism in the New World orioles (icterus).
The evolution of sexual dimorphism has long been attributed to sexual selection, specifically as it would drive repeated gains of elaborate male traits. In contrast to this pattern, New World oriole species all exhibit elaborate male plumage, and the repeated gains of sexual dichromatism observed in the genus are due to losses of female elaboration. Interestingly, most sexually dichromatic orio...
متن کاملCoalescent analyses show isolation without migration in two closely related tropical orioles: the case of Icterus graduacauda and Icterus chrysater
The Isthmus of Tehuantepec has played an important role in shaping the avian diversity of Mexico, as well as the rest of the Western Hemisphere. It has been both a barrier and a land connector between North and South America for many groups of birds. Furthermore, climatic change over the Pleistocene has resulted in ecological fluctuations that led to periods of connection and isolation of the h...
متن کاملSong and plumage evolution in the New World orioles (Icterus) show similar lability and convergence in patterns.
Both song and color patterns in birds are thought to evolve rapidly and exhibit high levels of homoplasy, yet few previous studies have compared the evolution of these traits systematically using the same taxa. Here we reconstruct the evolution of song in the New World orioles (Icterus) and compare patterns of vocal evolution to previously reconstructed patterns of change in plumage evolution i...
متن کاملUsing Historical Dna to Characterize Hybridization Between Baltimore Orioles (Icterus Galbula) and Bullock's Orioles (I. Bullockii)
—Studies of genetic variation across hybrid zones have demonstrated that the evolutionary dynamics within them are often complicated. Using DNA extracted from toe pads of 701 individuals collected by Sibley and Short (1964) about 50 years ago from across the Icterus bullockii–I. galbula hybrid zone, we calculated mitochondrial cline shape parameters and compared them with plumage-based inferenc...
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ژورنال
عنوان ژورنال: The Auk
سال: 2007
ISSN: 1938-4254,0004-8038
DOI: 10.1093/auk/124.2.410