A new ascaridid nematode, Mammalakis zambiensis n. sp. (Heterakoidea: Kiwinematidae), from the mole rat Fukomys anselli (Burda, Zima, Scharff, Macholán & Kawalika) (Rodentia: Bathyergidae) in Zambia

Abstract

Mammalakis zambiensis n. sp. is described from the large intestine and caecum of Fukomys anselli (Burda, Zima, Scharff, Macholán & Kawalika), a bathyergid rodent endemic to Zambia. Morphological data for comparison with its three congeners, M. macrospiculum (Ortlepp, 1939), M. spalacis (Marcu, 1930) and M. spalaxi (Kozlov & Jangolenko, 1962) are provided. Based on studies of the type-material, observations of hitherto undescribed morphological characters of M. macrospiculum, a parasite of Bathyergus suillus (Schreber) (Hystricomorpha: Bathyergidae) in South Africa, are presented. To date, the generic diagnosis of Mammalakis Inglis, 1991 is based largely on characters of its type-species, M. macrospiculum. In having three rounded lips, not set-off from the body, a stout oesophagus with a flask-shaped posterior bulb, lateral alae that broaden on the level of the precloacal sucker and cloaca, and mature eggs with a smooth shell, M. zambienis n. sp. corresponds to the characters of the genus. However, the presence of lips with anterior flanges that were observed in M. zambiensis n. sp., and also for the first time in M. macrospiculum, are in contrast with the current diagnosis of Mammalakis. Further studies will be needed to determine if an amendment of the generic diagnosis is indicated.

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Acknowledgements

The authors are indebted to Professor N. C. Bennett, University of Pretoria, for providing the study material.

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Correspondence to Kerstin Junker.

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The authors declare that they have no conflict of interest.

Ethical approval

The project passed review by the Ethics Panel of the University of Pretoria (Ref. No. EC001-09). Mole rats were captured under authorisation of the Department of Veterinary and Nature Conservation in the Lusaka Province of Zambia (see Sichilima et al., 2011). Animals were humanely treated, following the guidelines of the American Society of Mammalogists (Gannon & Sikes, 2007).

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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as 14F23706-94BC-4651-A431-25624551DAD4. This article was published as an Online First article on the online publication date shown on this page. The article should be cited by using the doi number. This is the Version of Record.

This article is part of the Topical Collection Nematoda.

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Junker, K., Lutermann, H. & Mutafchiev, Y. A new ascaridid nematode, Mammalakis zambiensis n. sp. (Heterakoidea: Kiwinematidae), from the mole rat Fukomys anselli (Burda, Zima, Scharff, Macholán & Kawalika) (Rodentia: Bathyergidae) in Zambia. Syst Parasitol 94, 557–566 (2017). https://doi.org/10.1007/s11230-017-9721-9

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Keywords

  • Total Body Length
  • Excretory Pore
  • Anterior Extremity
  • Maximum Body Width
  • Oesophageal Bulb