School of Animal and Veterinary Sciences, Graham Centre for Agricultural Innovations, Charles Sturt University, Wagga Wagga, Australia.
Fisheries Research, Department of Primary Industries and Resources, Northern Territory Government, Darwin, Australia.
Parasitol Res. 2020 Jun;119(6):1729-1742. doi: 10.1007/s00436-020-06672-w. Epub 2020 Apr 20.
Being listed in the IUCN Red List of Threatened Species, knowledge on the biology, health and diseases of the scalloped hammerhead, Sphyrna lewini (Griffith & Smith) is limited; this is especially true for its parasites. In this paper, a new species, Pulchrascaris australis, is morphologically described followed by genetic characterisation based on the sequence of the ITS region. The new species can be easily differentiated from its congeners based on the morphology of the mouthpart, spicules, plectanes, eggs and vulva. Phylogenetic analyses clearly distinguish specimens in the present study from other parasitic nematodes found in the Australasian waters and elsewhere. The sequencing data also suggest that Terranova larval type I found previously in various fish from New Caledonian and Australian (Queensland) waters also belong to Pulchrascaris australis n. sp.
被列入 IUCN 红色名录的濒危物种，关于糙齿槌鲨 Sphyrna lewini（格里菲斯和史密斯）的生物学、健康和疾病的知识有限；特别是关于它的寄生虫。本文描述了一种新的物种，即澳大利亚美丽小袋虫 Pulchrascaris australis，随后基于 ITS 区序列进行了遗传特征描述。新物种可以根据口器、刺、螺旋器、卵和阴道的形态很容易与同属种区分开来。系统发育分析清楚地将本研究中的标本与在澳大利亚水域和其他地方发现的其他寄生线虫区分开来。测序数据还表明，先前在新喀里多尼亚和澳大利亚（昆士兰州）水域的各种鱼类中发现的 Terranova 幼虫 I 型也属于澳大利亚美丽小袋虫 Pulchrascaris australis n. sp。
