Morphological and molecular evidence reveals a new species of Lyperosomum Looss, 1899 (Digenea: Dicrocoeliidae) from Melanerpes aurifrons (Wagler, 1829) from northern Mexico
Por:
Gonzalez-Garcia, M. T., Ortega-Olivares, M. P., Andrade-Gomez, L., Garcia-Varela, M.
Publicada:
1 ene 2020
Resumen:
A new species of the genus Lyperosomum Looss, 1899, from the intestine
of the golden-fronted woodpecker (Melanerpes aurifrons) from northern
Mexico is described. Lyperosomum cuauhxinqui sp. n. is morphologically
distinguished from other congeneric species from the Americas by a
higher oral/ventral sucker ratio and its body length and width. The
sequences of domains D1-D3 of the large subunit (LSU) of nuclear
ribosomal DNA and cytochrome c oxidase subunit 1 (cox 1) from the
mitochondrial DNA of the new species were obtained and compared with
available sequences from GenBank. The genetic divergence estimated
between the new species and other congeneric species ranged from 2 to
6% and 13.4 to 17.3% for LSU and cox 1, respectively. Phylogenetic
analyses based on the two (LSU and cox 1) molecular markers consistently
showed that L. cuauhxinqui sp. n. was nested within the genus
Lyperosomum, with strong bootstrap support (100%) and Bayesian
posterior probabilities (1.0). In particular, the LSU tree indicated
that the sequence of the new species is closely related to sequences
from Zonorchis alveyi, Zonorchis delectans and Zonorchis sp. from
Central America, suggesting that these sequences should be transferred
to the genus Lyperosomum. The new species represents the first record
from Mexico and the fifth species identified in the Americas. Our study
also revealed that the taxonomy of the genus Lyperosomum should be
re-examined by combining molecular, morphological and ecological
characteristics.
Filiaciones:
Gonzalez-Garcia, M. T.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
Ortega-Olivares, M. P.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
Andrade-Gomez, L.:
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, Mexico City 04510, DF, Mexico
Garcia-Varela, M.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Ave Univ 3000,Ciudad Univ, Ciudad De Mexico 04510, Mexico
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