Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter October 18, 2018

A new species of Orientatractis (Nematoda: Atractidae) from the tortoise Indotestudo elongata (Blyth) in China

  • Baochen Liu , Zuozhen Li and Luping Zhang EMAIL logo
From the journal Acta Parasitologica


A new species of nematode, Orientatractis longicaudata n. sp. is described from the intestine of Indotestudo elongata (Blyth) (Testudinidae) from Zoo of Tianjin, Tianjin, China. The new species can be easily distinguished from its congers by having longer tail, by the length of gubernaculum and left spicule, and by the numbers of caudal papillae. This is first species of Orientatractis Petter, 1966 reported in China. A key to the species of Orientatractis is provided.


The authors wish to thank Dr. David González Solís (Parasitología del Necton, ECOSUR-Unidad Chetumal, Mexico) and Dr. Cláudia Portes Santos (Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Brazil) for providing important literatures. The thanks are also due to Professor Zhaozhi Qiu (College of Life Sciences, Nankai University) for collecting the specimens.


Buckley J.J.C. 1969. On a remarkable oxyurid nematode, Orientatractis leiperi n. sp., (Atractidae) from a South American tortoise, Podocnemis vogli. Journal of Helminthology, 43, 281–286. 10.1017/S0022149X0000482XSearch in Google Scholar

Bursey C.R., Goldberg S.R., Kraus F. 2014. New species of Orientatractis (Nematoda: Atractidae), new species of Rondonia (Nematoda: Atractidae) and other helminths in Austrochaperina basipalmata (Anura: Microhylidae) from Papua New Guinea. Acta Parasitologica, 59, 115–121. 10.2478/s11686-014- 0217-3Search in Google Scholar

Cavalcante P.H.O., Silva M.T., Santos E.G.N., Chagas-Moutinho V.A., Santos C.P. 2017. Orientatractis moraveci n. sp. and Rondonia rondoni Travassos, 1920 (Nematoda: Atractidae), parasites of Pimelodus blochii (Osteichthyes, Pimelodidae) from the Acre and Xapuri Rivers, Western Amazon, Brazil. Parasitology, 144, 226–236. 10.1017/S003118201600 1736Search in Google Scholar

Gibbons L.M., Platt T.R. 2006. Rhinoclemmysnema n. g. and three new species of nematodes of the family Atractidae (Cosmocercoidea), with notes on the helminth fauna of Rhinoclemmys pulcherrima (Testudines: Bataguridae) in Costa Rica. Journal of Helninthology, 80, 333–340. 10.1017/JHL2006360Search in Google Scholar

Gibbons L.M., Khalil L.F., Marinkelle C.J. 1997. Paraorientatractis semiannulata n. g., n. sp. (Cosmocercoidea: Atractidae) from the large intestine of the side-necked turtle, Podocnemis unifi lis Troschel, 1848 (Testudines: Pelomedusidae) in Brazil. Memórias do Instituto Oswaldo Cruz, 92, 359–364. DOI: 10.1590/S0074-0276199700030001110.1590/S0074-02761997000300011Search in Google Scholar

González-Solís D., Mariaux J. 2017. Orientatractis brycini sp. nov. (Nematoda: Atractidae) from characiform freshwater fishes in Gabon, Africa. Revue suisse de Zoologie, 124, 1–8. 10.5281/zenodo.322659Search in Google Scholar

González-Solís D., Moravec F. 2004. Two new nematode species, Orientatrctis campechensis n. sp. and Orientatractis chiapasensis n. sp. (Nematoda: Atractidae) from cichlid fishes in southern Mexico and Nicaragua. Journal of Parasitology, 90, 1443–1449. 10.1645/GE-3366Search in Google Scholar PubMed

Liu B.C., Zhang S.Q., Zhang L.P. 2011. Falcaustra sinensis sp. nov. (Nematoda, Kathlaniidae) from Indotestudo elongata in China. Acta Parasitologica, 56, 208–212. DOI: in Google Scholar

Moravec F., Kamchoo K., Pachanawan A. 2015. New nematode species, Orientatractis mekongensis n. sp. (Atractidae) and Neosynodontisia suratthaniensis n. g., n. sp. (Pharyngodonidae) from freshwater fishes in Thailand. Systematic Parasitology, 92, 197–209. DOI 10.1007/s11230-015-9598-410.1007/s11230-015-9598-4Search in Google Scholar PubMed

Petter, A.J. 1966. Équílibre des espèces dans les populations de nématodes parasites du colon des tortues terrestres.Mémoires du Muséum national d:Histoire naturelle, Series A., Zoologie, 39, 1–252.(In Franch)Search in Google Scholar

Zhang S.Q., Zhang L.P. 2011. A new species of Meteterakis Karve, 1930 (Nematoda: Heterakoidea) from Indotestudo elongata (Blyth) in China with a key to the species of Meteterakis. Zootaxa, 2869, 63–6810.11646/zootaxa.2869.1.4Search in Google Scholar

Received: 2018-08-10
Revised: 2018-08-21
Accepted: 2018-08-23
Published Online: 2018-10-18
Published in Print: 2018-12-19

© 2018 W. Stefański Institute of Parasitology, PAS

Downloaded on 10.12.2023 from
Scroll to top button