Hemiurid digeneans conspecific with Yamaguti, 1934 (the type species of the genus Yamaguti, 1934) were collected from the stomach of the daggertooth pike conger (Forsskål) off the Persian Gulf of Iran. This study aimed to provide a detailed characterization of , including measurements, illustrations and scanning electron microscopy (s.e.m.) representations. Comparisons with the original and previous descriptions revealed morphological and metrical variations in several features (i.e. body size and shape, arrangement of reproductive organs, soma to ecsoma length ratio, position of genital opening, number of vitelline tubules and extension of uterine coils) between from different hosts and localities. This study presents the first molecular sequence data associated with the small (18S) and large (28S) subunit nuclear ribosomal RNA genes (rDNA) for . Phylogenetic analyses of the 18S dataset placed as sister lineage to a clade formed of a group of species of Lühe, 1901 (Lecithasteridae Odhner, 1905). In contrast, phylogenetic analyses based on the 28S consistently recovered a sister relationship between and representatives of the Hemiuridae Looss, 1899. Further comprehensive phylogenetically based classification in light of morphology and taxonomic history of the Hemiuridae and Lecithasteridae is required to infer phylogenetic affinities and historical biogeography of . A comprehensive list of previously reported species of together with their associated hosts, localities and morphometric data is provided.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10941220 | PMC |
http://dx.doi.org/10.1017/S0031182023001063 | DOI Listing |
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