Redescription and molecular characterization of Baruscapillaria spiculata (Nematoda: Capillariidae) parasitizing the Neotropic cormorant Phalacrocorax brasilianus from two Argentinian lagoons

Two species of intestinal Capillariidae were hitherto known from the Neotropic cormorant Phalacrocorax brasilianus, Baruscapillaria spiculata (Freitas, 1933), and appendiculata 1933). The original descriptions are very short brief, further reports both scarce and/or confusing. This paper provides a morphological redescription molecular characterization, based on partial 18S rDNA gene, B. specimens parasitizing in two continental lagoons Buenos Aires province, Argentina. Both morphometrical differences between highlighted examination available type material. Additionally, previous Mexico Brazil discussed. A phylogenetic analysis conducted 46 other capillariid isolates GenBank demonstrated sister-taxon relationship our Baruscapillaria. But, at same time, significant genetic distances taxa showed an interesting variability genus probable division this into multiple genera could probably be confirmed through integrative studies including more species.