Morphological and Molecular Evidence for a New Rhabdochonid Species (Nematoda: Rhabdochonidae) Parasitizing Profundulus oaxacae (Profundulidae) in the State of Oaxaca, Mexico
| Autor: | Julio Cesar Salinas-Ocampo, Carlos Daniel Pinacho-Pinacho, Miguel Calixto-Rojas, Juan Manuel Caspeta-Mandujano, Miguel Rubio-Godoy |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Lineage (evolution) 030231 tropical medicine Zoology Fresh Water Spirurida Infections Biology 030308 mycology & parasitology Electron Transport Complex IV 03 medical and health sciences Cyprinodontiformes Fish Diseases 0302 clinical medicine Rivers Genus Large ribosomal subunit RNA Ribosomal 28S Prevalence Parasite hosting Animals Killifish Mexico Ecology Evolution Behavior and Systematics Phylogeny 0303 health sciences Likelihood Functions Phylogenetic tree Cytochrome c oxidase subunit I Gallbladder Bayes Theorem DNA biology.organism_classification Freshwater fish Microscopy Electron Scanning Parasitology Female Spiruroidea |
| Zdroj: | The Journal of parasitology. 106(2) |
| ISSN: | 1937-2345 |
| Popis: | The genus Rhabdochona Railliet, 1916 is one of the most speciose group of nematodes, parasites of freshwater fishes, with approximately 103 species described worldwide. Twenty-two species have been recorded in the Americas, 14 of them in Mexico. In this paper we describe a new species of Rhabdochona on the basis of light and scanning electron microscopy and molecular tools. Rhabdochona adentata n. sp. was recovered from the gallbladder of the freshwater Oaxaca killifish, Profundulus oaxacae (Meek, 1902) (Profundulidae) captured in the Rio Grande, State of Oaxaca, Mexico. Rhabdochona adentata n. sp. differs markedly from its congeners by possessing an unusual prostom lacking anterior teeth, small simple deirids, and the location of the excretory pore at the level of the union of the muscular and glandular esophagus. Sequences of cytochrome c oxidase subunit I (COI) from mitochondrial deoxyribonucleic acid and the D2 + D3 domains of the large ribosomal subunit (28S) were obtained from 3 specimens and were analyzed using maximum likelihood and Bayesian inference analyses. Phylogenetic analyses using COI and 28S genes recovered 1 new lineage of Rhabdochona. The new species is described on the basis of a detailed morphological study. This parasite represents the first species of Rhabdochona without prostomal teeth and with a different site of infection, the gallbladder. |
| Databáze: | OpenAIRE |
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