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Auteur U. S. Johansson |
Documents disponibles écrits par cet auteur (5)
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Article
P. G. P. Ericson, Auteur ; M. Irestedt, Auteur ; U. S. Johansson, AuteurThis paper summarizes and discusses the many new insights into passerine evolution gained from an increased general interest in avian evolution among biologists, and particularly from the extensive use of DNA sequence data in phylogenetic recons[...]![]()
Article
P. G. P. Ericson, Auteur ; A. L. Jansen, Auteur ; U. S. Johansson, Auteur ; J. Ekman, AuteurPhylogenetic relationships were studied based on DNA sequences obtained from all recognized genera of the family Corvidae sensu stricto. The aligned data set consists 2589 bp obtained from one mitochondrial and two nuclear genes. Maximum parsimo[...]![]()
Article
P. G. P. Ericson, Auteur ; D. Zuccon, Auteur ; J. Ohlson, Auteur ; U. S. Johansson, Auteur ; H. Alvarenga, Auteur![]()
Article
U. S. Johansson, Auteur ; P. G. P. Ericson, AuteurWoodpeckers, honeyguides, barbets, and toucans form a well-supported clade with approximately 355 species. This clade, commonly referred to as Pici, share with the South American clade Galbulae (puffbirds and jacamars) a zygodactyls foot with a [...]![]()
Article
M. Irestedt, Auteur ; U. S. Johansson, Auteur ; T. J. Parsons, Auteur ; P. G. P. Ericson, AuteurPhylogenetic relationships among major groups of passeriform birds were studied by analyses of nucleotide sequence data from two nuclear genes, c-myc and RAG-1. The results corroborated both the monophyly of the order Passeriformes, and the majo[...]



