Folia Parasitologica, vol. 61 (2014), issue 1

Folia Parasitologica 61[1] 69-75 (2014) | DOI: 10.14411/fp.2014.004

Subulura halli (Ascaridida: Subuluridae) from the endangered great bustard Otis tarda Linnaeus (Aves: Gruiformes) in China

Li-Qiang Du1, Zhen Xu2, Shun-Cai Li1, Liang Li3
1 College of Life Science and Technology, Hebei Normal University of Science & Technology, Qinhuangdao, Hebei Province, China;
2 Medical College of Hebei University of Engineering, Handan, Hebei Province, China;
3 Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang, Hebei Province, China

Subulurid nematodes identified as Subulura halli Barreto, 1918 were collected from the endangered bird Otis tarda Linnaeus (Gruiformes: Otididae) in China. A detailed redescription of the hitherto poorly known species is presented using both light and, for the first time, scanning electron microscopy. Previously unreported and erroneous morphological features of taxonomic significance are revealed. This species can be readily distinguished from its congeners by the relatively long oesophagus (1.47-1.92 mm long, representing 10.6-16.9% of body length), the number and arrangement of male caudal papillae (11 pairs in total, arranged as five pairs of precloacal and six pairs of postcloacal papillae), the equal length of spicules (1.35-1.52 mm long, representing 10.7-13.7% of body length) and the presence of a small medioventral, precloacal papilla in the male.

Keywords: Nematoda, redescription, morphology, taxonomy, scanning electron microscopy, Otididae, endangered birds, Palaearctic Region

Received: May 20, 2013; Accepted: July 3, 2013; Prepublished online: January 10, 2014; Published: January 11, 2014


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