A synthesis of our current knowledge of philometrid nematodes, a group of increasingly important fish parasites

0397189 - BC 2014 RIV CZ eng J - Journal Article
Moravec, František - de Buron, I.
A synthesis of our current knowledge of philometrid nematodes, a group of increasingly important fish parasites.
Folia Parasitologica. Roč. 60, č. 2 (2013), s. 81-101. ISSN 0015-5683. E-ISSN 1803-6465
R&D Projects: GA ČR GBP505/12/G112
Institutional support: RVO:60077344
Keywords : Nematoda * Philometridae * parasites * fish * taxonomy * morphology * biology * pathology
Subject RIV: EA - Cell Biology
Impact factor: 1.211, year: 2013

Members of the Philometridae represent the most important group of dracunculoid nematodes parasitizing fishes. In his monograph treating the Dracunculoidea, Moravec (2006) reported a total of 11 genera and 105 species of philometrids parasitizing freshwater, brackish-water and marine fishes. However, during the last six years (2007-2012), an additional 42 new species of Philometridae have been described, representing a 40% increase of the number of nominal species. Most of these species (30) belong to Philometra Costa, 1845, mainly represented by parasites of marine fishes, a few others (8) to Philometroides Yamaguti, 1935, and a single one to each of the following genera: Caranginema Moravec, Montoya-Mendoza et Salgado-Maldonado, 2008, Dentiphilometra Moravec et Wang, 2002, Dentirumai Quiazon et Moravec, 2013 and Spirophilometra Parukhin, 1971. Moreover, three new genera, Afrophilometra Moravec, Charo-Karisa et Jirku, 2009, Caranginema and Dentirumai, were erected. Representatives of seven genera, Afrophilometra, Buckleyella Rasheed, 1963, Caranginema, Dentiphilometra, Dentirumai, Paraphilometroides Moravec et Shaharom-Harrison, 1989 and Rumai Travassos, 1960, were studied using scanning electron microscopy (SEM) for the first time. Thirteen known but poorly described philometrid species were redescribed and, in some species of Caranginema and Philometra, previously unknown conspecific males were discovered and described. The male surface ultrastructure studied by SEM provided new taxonomically important features for species distinction. Gene sequencing was used in several recent studies and advanced our understanding of phylogenetic interrelationships among representatives of seven genera (Afrophilometra, Alinema Rasheed, 1963, Caranginema, Nilonema Khalil, 1960, Philometra, Philometroides and Rumai) and of the extent of the biodiversity of philometrids.
Permanent Link: http://hdl.handle.net/11104/0224852