Scaphanocephalus spp. (Trematoda: Opisthorchiidae) in intermediate and definitive hosts of the Yucatán Peninsula, Mexico, with a re-description of Scaphanocephalus expansus
Por:
González-García, MT, García-Varela, M, López-Jiménez, A, Ortega-Olivares, MP, de León, GPP, Andrade-Gómez, L
Publicada:
14 dic 2023
Resumen:
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 Yucatan 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.
Filiaciones:
González-García, MT:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
Univ Nacl Autonoma Mexico, Posgrad Ciencias Biol, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
García-Varela, M:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
López-Jiménez, A:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
Ortega-Olivares, MP:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
de León, GPP:
Escuela Nacl Estudios Super, Dept Sistemas & Proc Nat, Unidad Merida, Km 4-5,Carretera Merida Tetiz, Ucu 97357, Yucatan, Mexico
Andrade-Gómez, L:
Escuela Nacl Estudios Super, Dept Sistemas & Proc Nat, Unidad Merida, Km 4-5,Carretera Merida Tetiz, Ucu 97357, Yucatan, Mexico
hybrid, Hybrid Gold
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