Mayarhynchus karlae n. g., n. sp (Acanthocephala: Neoechinorhynchidae), a parasite of cichlids (Perciformes: Cichlidae) in southeastern Mexico, with comments on the paraphyly of Neoechynorhynchus Stiles & Hassall, 1905
Por:
Pinacho-Pinacho, Carlos D., Hernandez-Orts, Jesus S., Sereno-Uribe, Ana L., Perez-Ponce de Leon, Gerardo, Garcia-Varela, Martin
Publicada:
1 mar 2017
Categoría:
Parasitology
Resumen:
Mayarhynchus n. g. (Acanthocephala: Neoechinorhynchidae) is erected for
Mayarhynchus karlae n. g, n. sp. described from the intestine of four
species of cichlid fishes distributed from southeastern Mexico. The new
genus placed in the family Neoechinorhynchidae (Ward, 1917) Van Cleave,
1928, is readily distinguished from the other 17 genera in the family by
having a small proboscis armed with 45-46 relatively weak rooted hooks
arranged in nine longitudinal rows of five hooks each. In addition,
Mayarhynchus n. g., n. sp. is diagnosed by the presence of a short
trunk, body wall with five dorsal and one ventral giant hypodermal
nuclei, proboscis receptacle nearly cylindrical with single layered
wall, lemnisci broad and flat with large nuclei, testes in tandem,
cement gland with eight large nuclei, and eggs elongate to oval. Partial
sequences of the cytochrome c oxidase subunit 1 (cox1), internal
transcribed spacers (ITS1 + 5.8S + ITS2), and the D2-D3 domains of the
large subunit rRNA gene (28S) were obtained for five specimens of the
new species and other species belonging to the Neoechinorhynchidae.
Phylogenetic analyses confirmed that the new genus belongs to the
Neoechynorhynchidae and indicated that the genus Neoechynorhynchus
Stiles & Hassall, 1905 is not monophyletic. Comparison between three
populations of the new species yielded nine variable sites for cox1, 11
for ITS and four for 28S.
Filiaciones:
Pinacho-Pinacho, Carlos D.:
Univ Sierra Sur, Div Estudios Postgrado, Ciudad Univ,Guillermo Rojas Mijangos S-N, Oaxaca 70800, Mexico
Hernandez-Orts, Jesus S.:
Univ Nacl Comahue, Inst Biol Marina & Pesquera Almirante Storni, Consejo Nacl Invest Cientificas & Tecnicas, CONICET, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Univ Nacl Comahue, Escuela Super Ciencias Marinas ESCiMar, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Sereno-Uribe, Ana L.:
Univ Nacl Autonoma Mexico, Lab Helmintol, Inst Biol, Ap
Perez-Ponce de Leon, Gerardo:
Univ Nacl Autonoma Mexico, Lab Helmintol, Inst Biol, Ap
Garcia-Varela, Martin:
Univ Nacl Autonoma Mexico, Lab Helmintol, Inst Biol, Ap
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