Phylogenetic position of Acanthobothrium cleofanus (Cestoda: Onchoproteocephalidea) using molecular evidence
Por:
Adan-Torres, Berenice, Oceguera-Figueroa, Alejandro, Martinez-Flores, Gisela, Garcia-Prieto, Luis
Publicada:
1 feb 2022
Resumen:
Despite the large number of species described to date for the
onchoprotepcephalid genus Acanthobothrium (207), only 16 named species
have a genetic sequence. With this background, specimens of adult
cestodes of the stingray Hypanus longus were collected off San Blas,
Nayarit, and onchoproteocephalid larvae in the carangid fish Trachinotus
rhodopus from Puerto ` Angel, Oaxaca, both located on the Pacific coast
of Mexico. The objective of this work is to investigate the phylogenetic
position of these adults and larvae using nuclear ribosomal markers (18S
rDNA and 28S rDNA). Morphologically, adult specimens were identified as
Acanthobothrium cleofanus; larvae were identified only to family level.
The phylogenetic position of both taxa was investigated based on the
information of two nuclear molecular markers analyzed under Parsimony
(PA) and Bayesian Inference (BI) methods. The newly generated sequences
of A. cleofanus from Nayarit are identical to the sequences of several
samples of Acanthobothrium sp. collected in the Mexican Pacific, which
sequence are available in GenBank; DNA sequences obtained from
onchoproteocephalid larva clearly place this taxon within
Acanthobothrium but representing an independent lineage. In the
resulting phylogenetic trees, Uncibilocularis okei was found nested
within Acanthobothrium with an unstable position depending on the
optimality criteria, indicating the need for more molecular analyzes
with a greater number of species of both genera prior to define its
phylogenetic relationships.
Filiaciones:
Adan-Torres, Berenice:
Univ Nacl Autonoma Mexico, Inst Biol, Posgrad Ciencias Biol, AP 70-153, Ciudad De Mexico 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, AP 70-153, Ciudad De Mexico 04510, Mexico
Oceguera-Figueroa, Alejandro:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, AP 70-153, Ciudad De Mexico 04510, Mexico
Martinez-Flores, Gisela:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, AP 70-153, Ciudad De Mexico 04510, Mexico
Univ del Mar, Posgrad Ciencias Ecol Marina, Campus Puerto Angel, Oaxaca 7002, Mexico
Garcia-Prieto, Luis:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, AP 70-153, Ciudad De Mexico 04510, Mexico
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