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Towards a phylogeny of the Metazoa: evaluating alternative phylogenetic positions of Platyhelminthes, Nemertea, and Gnathostomulida, with a critical reappraisal of cladistic characters Naturalis
Jenner, Ronald A..
This paper critically assesses all morphological cladistic analyses of the Metazoa that were published during the last one and a half decades. Molecular and total evidence analyses are also critically reviewed. This study focuses on evaluating alternative phylogenetic positions of the ‘acoelomate’ worms: Platyhelminthes, Nemertea, and Gnathostomulida. This paper consists of two parts. In Part I, all recently proposed sister group hypotheses and the supporting synapomorphies for these phyla are evaluated. Discrepancies in the treatment of corresponding characters in different cladistic analyses are identified, and where possible, resolved. In Part II, the overall phylogenetic significance across the Metazoa of all characters relevant for placing the...
Tipo: Article / Letter to the editor Palavras-chave: Platyhelminthes; Nemertea; Gnathostomulida; Metazoa; Bilateria; Phylogeny; Morphological cladistics; 18S rDNA; Total evidence.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/534337
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Review of the family Rivulidae (Cyprinodontiformes, Aplocheiloidei) and a molecular and morphological phylogeny of the annual fish genus Austrolebias Costa 1998 Neotropical Ichthyology
Loureiro,Marcelo; Sá,Rafael de; Serra,Sebastián W.; Alonso,Felipe; Lanés,Luis Esteban Krause; Volcan,Matheus Vieira; Calviño,Pablo; Nielsen,Dalton; Duarte,Alejandro; Garcia,Graciela.
ABSTRACT The family Rivulidae is the fourth most diverse clade of Neotropical fishes. Together with some genera of the related African family Nothobranchiidae, many rivulids exhibit a characteristic annual life cycle, with diapausing eggs and delayed embryonic development, which allows them to survive in the challenging seasonal ponds that they inhabit. Rivulidae also includes two species known as the only the self-fertilizing vertebrates and some species with internal fertilization. The first goal of this article is to review the systematics of the family considering phylogenetic relationships and synapomorphies of subfamilial clades, thus unifying information that is dispersed throughout the literature. From this revision, it is clear that phylogenetic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cynolebiidae; Killifish; Neotropical; Total evidence.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000300202
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Hypothetico-deductivism in systematics: fact or fiction? Pap. Avulsos de Zool. (São Paulo)
Rieppel,Olivier.
Phylogenetic systematics (the cladistic analysis of phylogenetic relationships) is not hypotheticodeductively structured (in the sense of a covering law model of scientific explanation). If it were, there would be no reason to call for total evidence, since that requirement is automatically satisfied in a deductively structured explanation. Instead, the appeal to the requirement of total evidence in phylogenetic systematics indicates that phylogenetic inference is inductively, or abductively, structured. The principle of total evidence has been invoked to render inductive inference an argument as strong as it can be, but for this to be the case the total evidence must also be relevant evidence, i.e., evidence 'of the right sort' relative to the state of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hempel; Popper; Cladistics; Hypothetico-deductivism; Total evidence; Relevant evidence.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492008002300001
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The philosophy of total evidence and its relevance for phylogenetic inference Pap. Avulsos de Zool. (São Paulo)
Rieppel,Olivier.
The test of congruence under total evidence as used in systematics has been tied to a Popperian philosophy of science, but is here shown to be related to the coherence theory of truth in metaphysics and thus to coherentism in epistemology. Since the test of congruence is coherentist, the contextual (theoretical) background of initial character conceptualization cannot be ignored as is suggested by some proponents of the total evidence approach. The relative merits of a total evidence approach versus conditional data set partitioning are considered, and whereas both have their merits and drawbacks, either approach requires causal grounding of character statements (statements of homology), at least approximately and defeasibly. The conclusion is that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Systematics; Total evidence; Test of congruence; Popper.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492005000800001
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