Zoology Department, Faculty of Science, Cairo University, Cairo, Egypt,
Parasitol Res. 2013 Dec;112(12):4021-8. doi: 10.1007/s00436-013-3593-y. Epub 2013 Sep 6.
The present study described a new species of the genus Echinocephalus that was isolated from the intestine of the common carp Cyprinus carpio inhabiting Burullus Lake, Kafr el-Sheikh Governorate, Egypt. Thirty-two out of 70 examined specimens (45.71 %) were found to be naturally infected. The adult male worms were elongated and measured 0.79-0.85 mm (0.81 ± 0.02) in length and 0.21-0.32 mm (0.28 ± 0.002) in width, while females reached 0.89-0.98 mm (0.9 ± 0.02) long and 0.25-0.38 mm (0.28 ± 0.002) wide. The reported species are investigated microscopically, genetically, and compared with previous related ones. The present study recorded this new nematode parasite as Echinocephalus carpiae with accession no. KC493258, inhabiting new host and locality records in Egypt. It is especially characterized by short body length, cephalic bulb with few (six to eight) multiple rows of spines, clear annulated cuticle, and new genetic sequences, which identify the paraphyly of Gnathostomatinae.
本研究描述了从埃及 Kafr el-Sheikh 省 Burullus 湖栖息的鲤鱼肠道中分离出的棘头虫属的一个新种。在检查的 70 个标本中，有 32 个（45.71%）被发现自然感染。成年雄性蠕虫呈长形，长 0.79-0.85 毫米（0.81±0.02），宽 0.21-0.32 毫米（0.28±0.002），而雌性蠕虫长 0.89-0.98 毫米（0.9±0.02），宽 0.25-0.38 毫米（0.28±0.002）。报道的物种进行了显微镜检查、遗传分析，并与以前的相关物种进行了比较。本研究将这种新的线虫寄生虫记录为棘头虫属的鲤鱼棘头虫，其注册号为 KC493258，在埃及记录到了新的宿主和新的分布地点。它的特征尤其在于身体长度短、头部球有 6-8 排的刺、清晰的有环纹的角质层和新的遗传序列，这些特征表明 Gnathostomatinae 的并系发生。
