Phylogenetic Patterns and Hybridization

Phylogenetic Patterns and Hybridization

Hybridization is an important part of the evolutionary history of flowering plants. If hybridization has occurred among the species of a taxon under cladistic analysis the results are varied but always present additional difficulties. Hybridization results in incongruent intersecting data that obscure the underlying hierarchy. Guidelines and methods are examined for their usefulness in identify...

Hybridization & Zoogeographic Patterns in Pheasants

Spatial patterns of phylogenetic diversity

Ecologists and conservation biologists have historically used species-area and distance-decay relationships as tools to predict the spatial distribution of biodiversity and the impact of habitat loss on biodiversity. These tools treat each species as evolutionarily equivalent, yet the importance of species' evolutionary history in their ecology and conservation is becoming increasingly evident....

Intergeneric Phylogenetic Relationships of Swallows Estimated by Dna-dna Hybridization

--The phylogeny of the subfamily Hirundininae was estimated by hybridizing single-copy nuclear DNAs of 21 swallow species, representing 19 former and current genera, and a Tufted Titmouse (Parus bicolor) as outgroup. The phylogeny, which was unusually well resolved, consisted of three fundamental clades: Hirundo and allies, core martins, and African sawwings. The clade of Hirundo and allies com...

Blending of animal colour patterns by hybridization

Biologists have long been fascinated by the amazing diversity of animal colour patterns. Despite much interest, the underlying evolutionary and developmental mechanisms contributing to their rich variety remain largely unknown, especially the vivid and complex colour patterns seen in vertebrates. Here, we show that complex and camoufl aged animal markings can be formed by the ‘ blending ’ of si...