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, Lühe, 1904, Hexaglandula Petrochenko, 1950, Southwellina Witenberg 1932, Polymorphus Luhë, 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 are present. Our results provide support for the idea that Hexaglandula represents an independent lineage, whereas, in the case of Profilicollis, there is no conclusive evidence that they are not members of Polymorphus. The analyses also confirm that Polymorphus is paraphyletic, suggesting that the genus represents a complex of species that should be re-examined and reclassified using morphological, ecological, and molecular data. Our observations suggest that decapods (intermediate hosts for the 2 genera under study) were independently colonized at least twice during the evolutionary history of the group.
Skip Nav Destination
Article navigation
February 2008
SYSTEMATICS-PHYLOGENETICS|
February 01 2008
Validating the Systematic Position of Profilicollis Meyer, 1931 and Hexaglandula Petrochenko, 1950 (Acanthocephala: Polymorphidae) Using Cytochrome C Oxidase (cox 1)
Martín García-Varela;
Martín García-Varela
Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 70-153, C.P. 04510, México, D.F. México. [email protected]
Search for other works by this author on:
Gerardo Pérez-Ponce de León
Gerardo Pérez-Ponce de León
Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 70-153, C.P. 04510, México, D.F. México. [email protected]
Search for other works by this author on:
J Parasitol (2008) 94 (1): 212–217.
Citation
Martín García-Varela, Gerardo Pérez-Ponce de León; Validating the Systematic Position of Profilicollis Meyer, 1931 and Hexaglandula Petrochenko, 1950 (Acanthocephala: Polymorphidae) Using Cytochrome C Oxidase (cox 1). J Parasitol 1 February 2008; 94 (1): 212–217. doi: https://doi.org/10.1645/GE-1257.1
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
Sign in via your Institution
Sign in via your InstitutionCiting articles via
SEROPREVALENCE OF TOXOPLASMA GONDII AND ASSOCIATED RISK FACTORS IN ONE-HUMPED CAMELS (CAMELUS DROMEDARIUS) IN QATAR
Sonia Boughattas, Hashim Alhussain, Ahmed Gawish, Nahla O. Eltai
SCOLICIDAL POTENCY OF BILE AGAINST ECHINOCOCCUS GRANULOSUS
İsa Caner Aydın, Noyan İlhan, Ahmet Şeker, Cem Batuhan Ofluoğlu, Fırat Mülküt, Nuri Emrah Göret, Kenan Çetin, Erdal Polat, Gökhan Aygün, Hasan Fehmi Kücük
SYNONYMIZATION OF PLACOBDELLA PICTA (VERRILL, 1872) (HIRUDINEA: GLOSSIPHONIIDAE) WITH DESCRIPTIONS OF TWO NEW SPECIES REVEALED BY MOLECULAR SPECIES DELIMITATION
Anna J. Phillips, Dennis J. Richardson, Charlotte I. Hammond, Brett C. Gonzalez, Eric A. Lazo-Wasem, William E. Moser
A RE-EVALUATION OF ZYGOCOTYLE (DIGENEA, PARAMPHISTOMOIDEA) BASED ON NEW GENETIC DATA SUPPORTS ITS SYNONYMIZATION WITH WARDIUS
Tyler J. Achatz, Dawn W. Cleveland, Sarah A. Orlofske, Robert C. Jadin, Jason Block, Lisa K. Belden, Hudson A. Pinto, Vasyl V. Tkach
DESCRIPTION OF A NEW SPECIES OF GYRINICOLA YAMAGUTI, 1938, FROM THE MONTEZUMA FROG, RANA MONTEZUMAE, IN THE TRANSITION ZONE BETWEEN THE NEARCTIC AND NEOTROPICS
Matthew A. Walker, Rogelio Aguilar-Aguilar, Virginia León-Règagnon, F. Agustín Jiménez