Validating the systematic position of Plationus Segers, Murugan & Dumont, 1993 (Rotifera: Brachionidae) using sequences of the large subunit of the nuclear ribosomal DNA and of
Por:
Reyna-Fabián M.E., Laclette J.P., Cummings M.P., García-Varela M.
Publicada:
1 may 2010
Categoría:
Aquatic Science
Resumen:
Members of the family Brachionidae are free-living organisms that range in size from 170 to 250 microns. They comprise part of the zooplankton in freshwater and marine systems worldwide. Morphologically, members of the family are characterized by a single piece loricated body without furrows, grooves, sulci or dorsal head shields, and a malleate trophi. Differences in these structures have been traditionally used to recognize 217 species that are classified into seven genera. However, the validity of the species, Plationus patulus, P. patulus macracanthus P. polyacanthus, and P. felicitas have been confused because they were alternatively assigned in Brachionus or Platyias, when considering only morphological and ecological characters. Based on scanning electron microscope (SEM) images of the trophi, these taxa were assigned in a new genus, Plationus. In this study, we examined the systematic position of P. patulus and P. patulus macracanthus using DNA sequences of two genes: the cytoc
Filiaciones:
Reyna-Fabián M.E.:
Univ Nacl Autonoma Mexico, Dept Immunol, Inst Biomed Res, Mexico City 04510, DF, Mexico
Laclette J.P.:
Univ Nacl Autonoma Mexico, Dept Immunol, Inst Biomed Res, Mexico City 04510, DF, Mexico
Cummings M.P.:
Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD 20742, United States
García-Varela M.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Mexico City 04510, DF, Mexico
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