A new genus of proteocephalid tapeworm (Cestoda) from the marbled swamp eel Synbranchus marmoratus Bloch (Synbranchiformes: Synbranchidae) in the River Paraná basin, Argentina
| Autor: | Nathalia J. Arredondo, Alicia A. Gil de Pertierra, Philippe V. Alves |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
NEOTROPICAL REGION PROTEOCEPHALIDAE Cestoda Argentina Fresh Water purl.org/becyt/ford/1 [https] Ciencias Biológicas 03 medical and health sciences Fish Diseases Rivers Genus Animals Synbranchus marmoratus purl.org/becyt/ford/1.6 [https] Phylogeny PHYLOGENETIC ANALISYS biology MONTICELLIINAE Swamp eel Synbranchiformes Anatomy Viral tegument FRESHWATER Zoología Ornitología Entomología Etología 030108 mycology & parasitology TAXONOMY biology.organism_classification Cestode Infections Smegmamorpha Intestines 030104 developmental biology Microscopy Electron Scanning MORPHOLOGY Parasitology Taxonomy (biology) Female Microtriches CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| Popis: | Synbranchiella gen. n. is proposed to accommodate Synbranchiella mabelae sp. n. (Proteocephalidae: Monticelliinae) from the intestine of the marbled swamp eel Synbranchus marmoratus Bloch, in the River Colastiné, a tributary of the middle River Paraná in Argentina. The new genus is placed in the Monticelliinae because of the cortical position of the genital organs. It differs from all known monticelliine genera by the following combination of characters: (i) scolex robust, with a conical apex, without metascolex; (ii) biloculate suckers with a conspicuous septum separating unequally-sized loculi and a robust non-adherent area, lacking free posterior margin; (iii) vitelline follicles in two narrow lateral bands, extended throughout the nearly entire proglottid length; (iv) vagina always anterior to the cirrus-sac, with an inconspicuous vaginal sphincter; (v) a genital pore pre-equatorial. Scanning electron microscopy revealed three types of microtriches on the tegument surface: acicular and capiliform filitriches and gladiate spinitriches. A phylogenetic analysis of the large subunit nuclear ribosomal RNA gene (lsrDNA, D1–D3 domains) confirms that S. mabelae represents an independent lineage within a large clade comprised mainly from Neotropical taxa parasitising catfishes. This is the second proteocephalidean cestode described from a Neotropical synbranchiform fish host. Fil: Arredondo, Nathalia Jaquelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina Fil: Vieira Alves, Philippe. Universidade Federal Rural do Rio de Janeiro; Brasil. Biology Centre of the Academy of Sciences of the Czech Republic; República Checa Fil: Gil de Pertierra, Alicia Alida. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina |
| Databáze: | OpenAIRE |
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