Description of Pseudobenedeniella johnstoni sp. n. (Monogenea: Capsalidae) from the gills of Antarctic black rockcod, Notothenia coriiceps Richardson in coastal waters of West Antarctica
Year: 2024
Type: article
Abstract: Summary Morphological and metrical analyses of monogeneans from the gills of Antarctic rockcod Notothenia coriiceps revealed the presence of a new species, Pseudobenedeniella johnstoni sp. n. Fresh specimens of monogeneans collected from N. coriiceps from the vicinity of Galindez Island, Argentine Islands, West Antarctica were examined morphologically, by molecular analysis and Energy Dispersive X-ray analysis (EDXA). The new species differs from Pseudobenedeniella branchialis Timofeeva, Gaevskaya, Kovaljova, 1987 by the different shapes of anterior and posterior hamuli, the presence of a pronounced sickle-shaped blade of the anterior hamulus and its characteristic wide (wing-like) shaft, serrated on one side, smaller posterior hamulus with a distinct short and broad shaft that widens and is serrated distally, more extensive dimensions of the penis and its pear-like shape, smaller vagina diameter, ovoid egg shape with more pointed anterior pole and blunt posterior pole and long coiled filament as well as different type species of the host in a geographically distant type locality. Genetic data accompanied the description, and phylogenetic analyses inferred that the new species clustered with monogenean species positioned under the family Capsalidae. Molecular data were generated for the 18S and 28S genes of the ribosomal RNA of P. johnstoni sp. n. to provide the first molecular analysis for Pseudobenedeniella species. EDXA for a species of Pseudobenedeniella was offered for the first time.
Source: Helminthologia
Institutions: Parasitology Center, Chaudhary Charan Singh University, Ministry of Education and Science, National Academy of Sciences of Ukraine, State Institution National Antarctic Scientific Center, State Museum of Natural History of the National Academy of Sciences of Ukraine, Slovak Academy of Sciences, Institute of Parasitology of the Slovak Academy of Sciences, I.I. Schmalhausen Institute of Zoology
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4407849810