Taxonomic Identity in Microbial Eukaryotes: A Practical Approach Using the Testate Amoeba Centropyxis to Resolve Conflicts Between Old and New Taxonomic Descriptions
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2008
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Resumo |
The present work focuses on 12 taxa of the genus Centropyxis Stein, 1857 to explore the conflict between traditional and contemporary taxonomic practices. We examined the morphology, biometry, and ecology of 2,120 Centropyxis individuals collected from Tiete River, Sao Paulo, Brazil; with these new data we studied the consistency of previously described species, varieties, and forms. We encountered transitional forms of test morphology that undermine specific and varietal distinctions for three species and nine varieties. Biometrical analyses made comparing the organisms at the species level suggest a lack of separation between Centropyxis aculeata and Centropyxis discoides, and a possible distinction for Centropyxis ecornis based on spine characteristics. However, incongruence between recent and previous surveys makes taking any taxonomic-nomenclatural actions inadvisable, as they would only add to the confusion. We suggest an explicit and objective taxonomic practice in order to enhance our taxonomic and species concepts for microbial eukaryotes. This will allow more precise inferences of taxon identity for studies in other areas. CAPES- Brazil Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) |
Identificador |
JOURNAL OF EUKARYOTIC MICROBIOLOGY, v.55, n.5, p.409-416, 2008 1066-5234 http://producao.usp.br/handle/BDPI/27620 10.1111/j.1550-7408.2008.00339.x |
Idioma(s) |
eng |
Publicador |
BLACKWELL PUBLISHING |
Relação |
Journal of Eukaryotic Microbiology |
Direitos |
restrictedAccess Copyright BLACKWELL PUBLISHING |
Palavras-Chave | #Biometry #Centropyxis #morphology #taxonomy #MOLECULAR PHYLOGENY #DISCOIDES RHIZOPODA #LOBOSE AMEBAS #PROTOZOA #ARCELLINIDA #SYSTEMATICS #BRAZIL #CLASSIFICATION #VARIABILITY #MONOGRAPH #Microbiology |
Tipo |
article original article publishedVersion |