AVIS-IBIS

Birds of Indian Subcontinent

Using Molecular Phytogenies to Test Phytogeographical Links between East/South Africa-Southern Arabia and the Macaronesian Islands: A Review, and the Case of Vierea and Pulicaria Section Vieraeopsis (Asteraceae)

Publication Type:Journal Article
Year of Publication:2004
Authors:Andrus, N, Trusty, J, SANTOS-GUERRA, ARNOLDO, JANSEN, ROBERTK, Francisco-Ortega, J
Journal:Taxon
Volume:53
Issue:2
Date Published:2004
ISBN Number:00400262
Keywords:Fringillidae, Serinus, Serinus canaria
Abstract:We undertook a phylogenetic analysis of sequences of the internal transcribed spacers (ITS) of the nuclear ribosomal DNA to test the hypothesis that the Canary Island genus Vierea is closely related to Pulicaria sect. Vieraeopsis, a taxon with four species restricted to Socotra and Southern Arabia. The ITS tree does not support this relationship, although many of the nodes were weakly supported (bootstrap value below 75%). Vierea is sister to the Mediterranean genus Perralderia (bootstrap support 74%). We suggest that morphological similarities between Vierea and Pulicaria sect. Vieraeopsis are due mostly to morphological convergence. It is thus concluded that these two taxa do not share a common history. A review of molecular phylogenetic studies of taxa considered to represent putative biogeographical links between Macaronesia and Southern Arabia and/or distant regions of Africa, is also presented. With a few exceptions most of these putative relationships are not supported by molecular phylogenies. Additional cladistic studies are needed for at least 15 genera or sections with a predominant disjunct phytogeographical distribution between Macaronesia, East/South Africa and Southern Arabia.
URL:http://www.jstor.org/stable/4135612
Short Title:Taxon
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith