Dujardinascaris mormyropsis n. sp. (Nematoda: Anisakidae) from the osteoglossiform fish Mormyrops anguilloides (Linnaeus) (Mormyridae) in Central Africa

0429438 - BC 2015 RIV NL eng J - Journal Article
Moravec, František - Jirků, Miloslav
Dujardinascaris mormyropsis n. sp. (Nematoda: Anisakidae) from the osteoglossiform fish Mormyrops anguilloides (Linnaeus) (Mormyridae) in Central Africa.
Systematic Parasitology. Roč. 88, č. 1 (2014), s. 55-62. ISSN 0165-5752. E-ISSN 1573-5192
R&D Projects: GA ČR GBP505/12/G112; GA ČR GAP506/10/2330
Institutional support: RVO:60077344
Keywords : fish parasites * Anisakidae * Central Africa
Subject RIV: EG - Zoology
Impact factor: 1.336, year: 2014

A new nematode species, Dujardinascaris mormyropsis n. sp. (Anisakidae), is described from specimens found in the stomach and intestine of the cornish jack Mormyrops anguilloides (Linnaeus) (Osteoglossiformes; Mormyridae) in the Sangha River (Congo River basin) in Dzanga-Sangha Protected Areas, Central African Republic. Based on light and scanning electron microscopical examination, the new species differs from the only other congeneric species parasitising fishes in Africa, D. malapteruri (Baylis, 1923), mainly in the presence of dentigerous ridges on lips, absence of lateral caudal alae in the cloacal region, in the anteriorly curved, non-bifid distal tip of the gubernaculum and larger eggs (60-90 x 52-78 vs 45 x 30 mu m); males of D. mormyropsis are characterised by the presence of a ventral precloacal cuticular ornamentation not observed in other Dujardinascaris spp. Dujardinascaris mormyropsis and D. malapteruri also differ in the order of their fish hosts (Osteoglossiformes vs Siluriformes). Specimens previously reported as Dujardinascaris graberi Troncy, 1969, a junior synonym of D. malapteruri, from Mormyrops engystoma Boulenger in Chad belong to the new species D. mormyropsis.
Permanent Link: http://hdl.handle.net/11104/0234547