Assessing the diversity of freshwater fish trematodes from Laguna Escondida, Los Tuxtlas tropical rainforest, Mexico, using morphology and 28S rDNA sequences as barcodes
Por:
Velázquez-Urrieta, Y, García-Varela, M, de León, GPP
Publicada:
5 nov 2024
Resumen:
Despite a great effort made for almost 90 years, the diversity of freshwater fish trematodes in Mexico is still far from being fully known. The addition of molecular data to the description of trematode diversity in the last two decades added the potential to establish more robust species limits and a more accurate biodiversity estimation, but also led in some instances to the recognition of cryptic species complexes. Here, we used sequences of the large subunit of the nuclear ribosomal gene (28S rRNA) as barcodes, and morphological data, to assess the diversity of freshwater fish trematodes from a lake within a tropical rainforest. Eighty freshwater fish specimens of eight species were studied, and 120 trematode specimens were collected. Morphologically, specimens were allocated into nine genera; molecular phylogenetic analyses along with sequence divergence data provided evidence for recognising 11 trematode taxa, six adults and five metacercariae; six of them were identified to species level. Geographical distribution and host association patterns are briefly discussed for each trematode taxa.
Filiaciones:
Velázquez-Urrieta, Y:
Univ Nacl Autonoma Mexico, Dept Zool, Inst Biol, 3 Er Circuito exterior s-n,Ciudad Univ, Mexico City 04510, Mexico
Ctr Invest Biol Noroeste, Lab Genet Conservac, Calle IPN 195, La Paz 23096, BC, Mexico
García-Varela, M:
Univ Nacl Autonoma Mexico, Dept Zool, Inst Biol, 3 Er Circuito exterior s-n,Ciudad Univ, Mexico City 04510, Mexico
de León, GPP:
Univ Nacl Autonoma Mexico, Escuela Nacl Estudios Super Unidad Merida, Km 4-5 Carretera Merida Tetiz, Ucu 97357, Yucatan, Mexico
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