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Acta Parasitologica

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Volume 57, Issue 4 (Dec 2012)

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Mawsonascaris parva sp. nov. (Nematoda: Ascaridida) from the Arabian whipray Himantura randalli Last, Manjaji-Matsumoto et Moore (Rajiformes: Dasyatidae) off the coast of Iraq

Atheer Ali / Lu-Ping Zhang / Nadirah Al-Salim / Liang Li
Published Online: 2012-11-06 | DOI: https://doi.org/10.2478/s11686-012-0047-0

Abstract

Mawsonascaris parva sp. nov. collected from the Arabian whipray Himantura randalli Last, Manjaji-Matsumoto et Moore (Rajiformes: Dasyatidae) off the coast of Iraq is described and illustrated using light and scanning electron microscopy. The new species differs from its congeners by its small body size (8.11–18.2 mm long), the absence of an intestinal caecum, the slightly unequal spicules (left and right spicule 1.08–2.50 mm and 0.98–2.01 mm long, respectively, representing 12.1–13.7% and 10.1–12.1% of body length), the number and arrangement of male caudal papillae (13–14 pairs in total, arranged as: 7–8 pairs of precloacal, 1 pair of double paracloacal and 5 pairs of postcloacal) and the presence of a single, median precloacal papilla. Thus, a total of six species of Mawsonascaris are now known and this is the first species of this genus recorded from species of Himantura.

Keywords: Ascaridida; marine fish; Mawsonascaris; taxonomy; new species; Arabian Gulf

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About the article

Published Online: 2012-11-06

Published in Print: 2012-12-01


Citation Information: Acta Parasitologica, ISSN (Online) 1896-1851, ISSN (Print) 1230-2821, DOI: https://doi.org/10.2478/s11686-012-0047-0.

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© 2012 W. Stefański Institute of Parasitology, PAS. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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