Abstract
Summary
Scaphanocephalus is a small trematode genus belonging to the family Opistorchiidae. The genus currently contains only three species associated with marine fish as intermediate hosts and fish-eating birds as definitive hosts. Here, specimens of Scaphanocephalus were collected from the Osprey, Pandion haliaetus, and the White mullet, Mugil curema in the Yucatán Peninsula, Mexico. We report for the first-time DNA sequences of adult specimens of Scaphanocephalus, particularly S. expansus, as well as a sequence of a different species sampled as metacercaria. Morphological comparisons of Scaphanocephalus expansus confirmed the identity of the adult specimens, with minor morphological variations; Scanning electron photomicrographs were included, and the species was re-described. Phylogenetic analysis based on 28S rDNA sequences showed that Scaphanocephalus is monophyletic within Opisthorchiidae and consists of three independent lineages. Sequences of adults are identical to those of S. expansus. Instead, the sequence of the metacercaria sampled from the mesentery of Mugil curema nested with specimens reported as Scaphanocephalus sp. from a labrid fish in the Mediterranean Sea, herein named it as Scaphanocephalus sp. 2.
Publisher
Cambridge University Press (CUP)
Subject
Animal Science and Zoology,General Medicine,Parasitology
Reference46 articles.
1. On the Trematodes of Australian birds;Johnston;Journal and Proceedings of the Royal Society of New South Wales,1917
2. Morphological and molecular evidence reveals a new species of Lyperosomum Looss, 1899 (Digenea: Dicrocoeliidae) from Melanerpes aurifrons (Wagler, 1829) from northern Mexico;González-García;Journal of Helminthology,2020
3. Black-spot syndrome in Caribbean fishes linked to trematode parasite infection (Scaphanocephalus expansus);Kohl;Coral Reefs,2019
4. Two rare helminths in an osprey, Pandion haliaetus, in Mexico;Schmidt;Proceedings of the Helminthological Society of Washington,1985
5. Maddison, WP and Maddison, DR (2011) Mesquite: a modular system for evolutionary analysis. Version 3.6.1.