Validating the systematic position of Profilicollis meyer, 1931 and Hexaglandula petrochenko, 1950 (Acanthocephala : Polymorphidae) using cytochrome C oxidase (COX 1)
Por:
Garcia-Varela, M, de Leon, GPP
Publicada:
1 feb 2008
Resumen:
Members of the Polymorphidae (Acanthocephala) are distributed worldwide as endoparasites of marine mammals, fish-eating birds, and waterfowl. The family contains 10 genera, with approximately 127 species. Polymorphids are characterized by having a spinose trunk with a bulbous proboscis, double-walled proboscis receptacle, long lemnisci, and 4 tubular cement glands. The taxonomic position of several genera within Polymorphidae has been controversial when considering morphological and ecological characters. The mitochondrial coding gene cytochrome-c oxidase representing species of 5 genera of polymorphids (Corynosoma, Luhe, 1904, Hexaglandula Petrochenko, 1950, Southwellina Witenberg 1932, Polymorphus Luhe, 1911, and Profilicollis Meyer, 1931) were sequenced to determine the sister-group relationships among 2 particular genera, i.e., Hexaglandula, and Profilicollis. Maximum likelihood and Bayesian analyses showed that Polymorphidae, is a monophyletic assemblage, and that 3 major clades a
Filiaciones:
Garcia-Varela, M:
Univ Nacl Autonoma Mexico, Dept Zool, Inst Biol, Mexico City 04510, DF, Mexico
de Leon, GPP:
Univ Nacl Autonoma Mexico, Dept Zool, Inst Biol, Mexico City 04510, DF, Mexico
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