Description of Pseudobenedenia coriicepsi Sp. N. (Monogenea: Capsalidae) from the Antarctic Black Rockcod, Notothenia coriiceps Richardson in Coastal Waters of West Antarctica Using Novel SEM Images, Energy Dispersive X-Ray Analysis and Molecular Analysis

Authors: Rubtsova NY*, Chaudhary A, Salganskiy OO and Kuzmina TA

DOI: 10.23880/izab-16000512

Volume 6, Issue 5

Abstract

Morphological and metrical analyses of sclerotized parts of haptor and body morphology and anatomy of monogeneans from Antarctic rockcod Notothenia coriiceps Richardson revealed the presence of a new species, Pseudobenedenia coriicepsi sp. n., supported with molecular studies, EDXA and scanning electron microscopy. New species differs from Pseudobenedenia nototheniae Johnston, 1931 by characteristic shape of anterior hamulus, size of sclerotized structures of haptor, measurements of the body, measurements ratios, v-shaped consistent commissure in vitellaria field, relative proportions of body and haptor, unlobed testes, and by host species. Published drawings of sclerotized parts of haptor and measurements of the species of the genus Pseudobenedenia Johnston, 1931 are provided for comparison and discussed. Status of P. nototheniae as species complex and host-specificity in this group are discussed. Molecular data of the P. coriicepsi sp. n. (partial 18S and 28S) were generated to provide the first molecular analysis for any species of Pseudobenedenia to date. Phylogenetic analyses inferred from the two molecular markers indicate that P. coriicepsi sp. n. is closely related to the species of the genus Benedenia and formed a sister clade to it as positioned under the family Capsalidae.

Keywords: Pseudobenedenia coriicepsi; Pseudobenedenia nototheniae; Species Complex; Host-Specificity; Ribosomal RNA; EDXA; SEM

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