Weighted Ancestral Area Analysis and a solution of the Redundant Distribution Problem

Fecha de publicación: 1998

Librería: ConchBooks, Harxheim, AlemaniaConchBooks

Vendedor de 3 estrellas

Vendedor de IberLibro desde 1 de marzo de 2007

Condición: Usado

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Descripción del artículo del vendedor

A new cladistic method for the estimation of ancestral areas is based on reversible parsimony in combination with a weighting scheme that weights steps in positionally plesiomorphic branches more highly than steps in positionally apomorphic branches. By applying this method to cladograms of human mitochondrial DNA, the method is superior to previously proposed algorithms. The method is also an appropriate tool for the solution of the redundant distribution problem in area cladograms. Under the assumption of allopatric speciation, redundant distributions, i.e., sympatry of sister groups, show that dispersal has occurred; thus, the ancestral area of at least one sister group was smaller than the combined distribution of its descendants. With the weighted ancestral area analysis, the ancestral areas can be confined and at least some dispersal events can be distinguished from possible vicariance events. As applied to a cladogram of the Polypteridae, weighted ancestral area analysis is superior to Brooks parsimony analysis (assumption 0) and component analysis under assumptions 1 and 2 (Nelson and Platnick, 1981, Systematics and biogeography: Cladistics and vicariance. Columbia Univ. Press, New York.) in resolving redundancies. The results of the weighted ancestral area analysis may differ from the results of dispersal-vicariance analysis, because the rules of dispersal-vicariance analysis indirectly favor the questionable assumption that the ancestral species occupied only one unit area. 12 pp., 5 figs, gr. 8.…

N° de ref. del artículo W19860

Detalles bibliográficos

Título
Weighted Ancestral Area Analysis and a solution of the Redundant Distribution Problem
Autor
Hausdorf, B.
Año de publicación
1998

ConchBooks

Harxheim, Alemania

Vendedor de 3 estrellas

Vendedor de IberLibro desde 1 de marzo de 2007

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Descripción de la tienda

Founded in 1985 we are specialized in worldwide literature on Mollusca and marine invertebrates. Our publishing house has meanwhile published approximately 60 titles on that field of interest. We have stocks of most available international books on Malacology and a huge amount of antiquarian literature, even of the latter most titles are only available once.

Especialidad

Weichtiere / Shells, Schnecken / Snails & Slugs, Muscheln / Bivalves, Tintenfische / Squids / Octopusses / Ammonites, Malacology, Conchology, Marine Biology