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	Provedor de dados Naturalis (2) Darwiniana (1) Autor Catalano,Santiago A (1) Flores,Jorge R (1) Grand, A. (1) Koenemann, Stefan (1) Laurin, M. (1) Rineau, V. (1) Schram, Frederick R. (1) Suárez,Guillermo M (1) Zaragüeta, R. (1) Mais... Palavra-chave Parsimony (3) 42.10 (1) Branch length (1) Event pairs (1) Evolutionary model (1) Heterochrony (1) Hierarchy (1) Implied weighting (1) Neighbor joining (1) Ontogeny (1) Ordered characters (1) Outgroup polarization (1) Phylogenetic methodology (1) Pleurocarpous mosses (1) Reversals (1) Sequence data (1) Systematics (1) Taxonomy (1) Three-taxon analysis (1) Three-taxon statements (1) Mais... Tipo do documento Article / Letter to the editor (2) Info:eu-repo/semantics/article (1) Ano 2017 (1) 2015 (1) 2002 (1) País Netherlands (2) Argentina (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Cladistic analysis of the family cryphaeaeae (bryophyta) with emphasis on cryphaea: a study based on a comprehensive morphological dataset Darwiniana Flores,Jorge R; Catalano,Santiago A; Suárez,Guillermo M. The first comprehensive phylogenetic analysis of the Cryphaeaceae (Bryophyta), a pleurocarpic moss family, is conducted on the basis of morphological characters. The data set comprised 73 characters: 10 continuous and 63 discrete. Taxon sampling involved nine genera and 46 species of Cryphaeaceae, 32 species belonging to Cryphaea. Outgroup sampling included 23 species from 21 genera and 13 families of pleurocarpous mosses. The phylogenetic analyses were conducted using parsimony as the optimality criterion following an implied weighting approach. The results did not support the monophyly of Cryphaeaceae as it excluded Dendroalsia abietina from the family. The clade composed of the remaining genera (clade A) was diagnosed by a short seta (0.26-0.30 mm),... Tipo: Info:eu-repo/semantics/article Palavras-chave: Implied weighting; Parsimony; Pleurocarpous mosses; Systematics; Taxonomy. Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932017000100002 The limitations of ontogenetic data in phylogenetic analyses Naturalis Koenemann, Stefan; Schram, Frederick R.. The analysis of consecutive ontogenetic stages, or events, introduces a new class of data to phylogenetic systematics that are distinctly different from traditional morphological characters and molecular sequence data. Ontogenetic event sequences are distinguished by varying degrees of both a collective and linear type of dependence and, therefore, violate the criterion of character independence. We applied different methods of phylogenetic reconstruction to ontogenetic data including maximum parsimony and distance (cluster) analyses. Two different data sets were investigated: (1) four simulated ontogenies with defined phylogenies of six hypothetical taxa, and (2) a set of “real” data comprising sequences of 29 ontogenetic events from 11 vertebrate taxa.... Tipo: Article / Letter to the editor Palavras-chave: Ontogeny; Heterochrony; Event pairs; Vertebrate development; Sequence data; Phylogenetic methodology; Parsimony; Neighbor joining. Ano: 2002 URL: http://www.repository.naturalis.nl/record/534322 Experimental systematics: sensitivity of cladistic methods to polarization and character ordering schemes Naturalis Rineau, V.; Grand, A.; Zaragüeta, R.; Laurin, M.. Phenotypic characters are essential to study the evolution of extant and extinct life forms and to reconstruct the tree of life. Inside the cladistics theory, parsimony is used by a large majority of systematists working on phenotypic characters, whereas 3ta is much less widespread but has triggered important debates. Many important differences in the interpretation of the cladistic theory exist between these methods, e.g. meaning and treatment of reversals, character representation as ‘data-matrices’ in parsimony (ordered and unordered), and as rooted trees (hierarchies) in 3ta. Although 3ta has received severe criticism, mostly focused in the use of software intended to be used in parsimony, only a few empirical studies have compared these methods so... Tipo: Article / Letter to the editor Palavras-chave: Branch length; Evolutionary model; Hierarchy; Ordered characters; Outgroup polarization; Parsimony; Reversals; Three-taxon analysis; Three-taxon statements; Unordered characters; 42.10. Ano: 2015 URL: http://www.repository.naturalis.nl/record/560429 Registros recuperados: 3 Primeira ... 1 ... Última

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