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/lp/allen-press/a-new-species-of-neoascarophis-nematoda-cystidicolidae-parasitic-in-beq6F4Kebq
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- Publisher
- Allen Press
- Copyright
- Copyright © American Society of Parasitologists
- Subject
- Regular Article
- ISSN
- 0022-3395
- eISSN
- 1937-2345
- DOI
- 10.1645/para-/GE-2947.1
- Publisher site
- See Article on Publisher Site
Abstract
ABSTRACT: Nematodes of the cystidicolid Neoascarophis Machida, 1976 are all parasites of macrourid fishes, comprising at present 5 species. Several other unidentified species have also been reported in several fish species from the northern and southern Atlantic Ocean, including 1 from Macrourus carinatus (Günther) (Macrouridae) in the southwest Atlantic Ocean. During a parasitological survey carried out on samples of M. carinatus from Patagonian waters, nematodes referable to Neascarophis were found in ulcers in the gastric mucosa. These nematodes represented a new species that closely resembles N. macrouri by the posterior position of the vulva and the dilated posterior extremity in females. However the new species differs from N. macrouri mainly by its larger size, a larger muscular esophagus, and by a widely globose posterior extremity in females. SEM study of cephalic structures also showed morphological differences between both species, especially in the morphology of the submedian labia and lateral pseudolabia. In view on these differences a new species is proposed.
Journal
Journal of Parasitology – Allen Press
Published: Nov 22, 2011