A New Species of Rhabdochona Railliet, 1916 (Nematoda: Rhabdochonidae) from Endemic Goodeids (Cyprinodontiformes) from Two Mexican Lakes

A new species of Rhabdochona from 2 species of freshwater fishes, Alloophorus robustus and Goodea atripinnis, is described from 2 lakes of the Mesa Central of Mexico. Rhabdochona lichtenfelsi n. sp. belongs to a group of species possessing inconspicuous bifurcated deirids and a prostom armed with 10...

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Bibliographic Details
Published in:The Journal of parasitology 1998-08, Vol.84 (4), p.840-845
Main Authors: Sánchez-Alvarez, A., García-Prieto, L., de León, G. Pérez-Ponce
Format: Article
Language:English
Subjects:
Alloophorus robustus
Animals
Biological and medical sciences
Biological taxonomies
Cyprinodontiformes - parasitology
Eggs
Esophagus
Female
Fish Diseases - parasitology
Fresh Water
Freshwater
Freshwater fishes
Fundamental and applied biological sciences. Psychology
Goodea atripinnis
Invertebrates
Lakes
Male
Mexico
Microscopy, Electron, Scanning
Nemathelminthia. Plathelmintha
Nematoda - anatomy & histology
Nematoda - classification
Nematoda - ultrastructure
Nematode Infections - parasitology
Nematode Infections - veterinary
Nematodes
New species
Papillae
Parasitology
Rhabdochona lichtenfelsi
Systematics-Phylogenetics
Systematics. Geographical distribution
Zoology
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Description
Summary:A new species of Rhabdochona from 2 species of freshwater fishes, Alloophorus robustus and Goodea atripinnis, is described from 2 lakes of the Mesa Central of Mexico. Rhabdochona lichtenfelsi n. sp. belongs to a group of species possessing inconspicuous bifurcated deirids and a prostom armed with 10 large teeth. It is distinguished from them because the left spicule is shorter, the tip is bifurcate, and both spicules lack a reflected dorsal barb. The new species most closely resembles Rhabdochona catostomi and Rhabdochona milleri but differs from them because the former possesses a left spicule tip with ventral barb, right spicule with reflected distal barb, and 5 pairs of postanal papillae, whereas R. milleri has 14 prostomal teeth, eggs rounded, and left spicule with slightly outlined bifurcation and right with a dorsal barb. Previous records of R. milleri in Mexico must be referred to R. lichtenfelsi.
ISSN:0022-3395
1937-2345
DOI:10.2307/3284600