Morphological and molecular characterisation of a new species of Gyrodactylus von Nordmann, 1832 (Monogenoidea: Gyrodactylidae) of cichlid fishes (Perciformes) from Mexico

0520188 - BC 2020 RIV NL eng J - Journal Article
Mendoza-Palmero, Carlos Alonso - Blasco-Costa, I. - Pereze-Ponce de Leon, G.
Morphological and molecular characterisation of a new species of Gyrodactylus von Nordmann, 1832 (Monogenoidea: Gyrodactylidae) of cichlid fishes (Perciformes) from Mexico.
Parasitology International. Roč. 70, JUN 2019 (2019), s. 102-111. ISSN 1383-5769. E-ISSN 1873-0329
Institutional support: RVO:60077344
Keywords : n.-sp monogenea * fresh-water fish * neotropical monogenoidea * platyhelminthes monogenea * thymalli platyhelminthes * phylogenetic analysis * yucatan peninsula * atlantic salmon * spp. monogenea * high diversity * dna * Internal transcribed spacers * Gyrodactylus mojarrae * Cichlidae * Characidae * Eleotridae * Mexico
OECD category: Zoology
Impact factor: 1.866, year: 2019
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S1383576918302757

Gyrodactylus mojarrae n. sp. is described from the gills of the Neotropical cichlids Thorichthys maculipinnis, Rocio octofasciata, Vieja zonata and V. fenestrata from several localities across southern Mexico. The new species is erected on the basis of the morphology of the haptoral elements (anchors, bars and hooks), and its phylogenetic position within the Gyrodactylidae is evaluated based on the analysis of partial sequences of the ITS1, 5.8 rRNA gene and ITS2. Gyrodactylus mojarrae n. sp. differs from other congeneric species by having hooks with a straight shaft and recurved point, pointed toe and convex heel, presence of reduced superficial anchor roots, by the number and disposition of spinelets of the male copulatory organ, and the absence of shield and lateral processes of the superficial bar. Molecular circumscription of isolates of G. mojarrae n. sp. from different host and hydrological basins showed that these isolates are conspecific and represent a distinct lineage from other congeners, including newly sequenced isolates of Gyodactylus sp. A and Gyrodactylus sp. B from Astyanax mexicanus (Characidae) and Gobiomorus dormitor (Eleotridae), respectively. Genetic affinities of Gyodactylus sp. A and B indicate that they might represent undescribed species infecting freshwater fish from the Americas.
Permanent Link: http://hdl.handle.net/11104/0304891