Spinitectus mixtecoensis sp. nov. (Nematoda: Cystidicolidae), from the Oaxaca killifish Profundulus punctatus (Osteichthyes: Profundulidae) from Mexico, with comments on the distribution of Spinitectus humbertoi in the genera Profundulus and Tlaloc

Juan José Barrios-Gutiérrez, Ana Santacruz, Emilio Martínez-Ramírez, Miguel Rubio-Godoy, Carlos Daniel Pinacho-Pinacho

Resumen


Spinitectus mixtecoensis sp. nov. was isolated from the intestine of Profundulus punctatus from the rivers Apoala and Los Sabinos, Oaxaca, Mexico. The new species is described based on morphological and metric analyses, scanning electron microscopy, and partial sequences of the mitochondrial cytochrome c oxidase 1 (cox 1) gene. Spinitectus mixtecoensis sp. nov. is characterized by possessing 7 rings and few spines per ring, between 22-28 in both sexes and 5-8 spines per sector. The new species most closely resembles Spinitectus humbertoi, a parasite of Profundulus and Tlaloc from Central America. Specimens of Spinitectus mixtecoensis sp. nov. (n = 3) and S. humbertoi (n = 2) were sequenced for the cox 1 gene, and the sequences were aligned with other nematode sequences available in GenBank. Maximum likelihood and Bayesian inference analyses indicated that this new species forms an independent, well-supported clade with high posterior probability (pp). Spinitectus mixtecoensis sp. nov. is the third species of Spinitectus recorded in profundulid fish from Central America.

Palabras clave


New species; Central America; Taxonomy; Cox 1

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Referencias


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DOI: http://dx.doi.org/10.22201/ib.20078706e.2019.90.2684

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Revista Mexicana de Biodiversidad, Año 3, No. 12, enero-marzo 2014, es una publicación trimestral editada por la Universidad Nacional Autónoma de México, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510, Ciudad de México, a través del Instituto de Biología, Tercer Circuito Universitario s/n, Ciudad Universitaria, Col. Copilco, Del. Coyoacán, C.P. 04510, Ciudad de México, Tel. (55)56229164, http://www.revista.ib.unam.mx/index.php/bio/, falvarez@ib.unam.mx.Editor responsable: Dr. Fernando Álvarez Noguera. Reserva de Derechos al uso Exclusivo No. 04-2013-092709142100-203, ISSN: 2007-8706, ambos otorgados por el Instituto Nacional del Derecho de Autor, Responsable de la última actualización de este número, Instituto de Biología, UNAM, Dr. Fernando Álvarez Noguera, Tercer Circuito Universitario s/n, Ciudad Universitaria, Col. Copilco, Del. Coyoacán, C.P. 04510, Ciudad de México, fecha de la última modificación: 25 de agosto de 2016.

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