Morsy Kareem, Bashtar Abdel-Rahman, Fol Mona, Yehia Salma
Zoology Department, Faculty of Science, Cairo University, Cairo, Egypt,
Parasitol Res. 2014 Dec;113(12):4579-85. doi: 10.1007/s00436-014-4148-6. Epub 2014 Oct 3.
Haemonchus longistipes is a gastrointestinal abomasal nematode which is one of the most prevalent and pathogenic parasites infesting the stomach of ruminants. On the basis of light and ultrastructural data, the objective of the present study was to introduce a first identification of the cameline haemonchosis caused by H. longistipes. Abomasa of 42 Egyptian camels Camelus dromedarius (Artiodactyla: Camelidae) were collected monthly from September 2013 to April 2014 from the main slaughter house of Cairo, Egypt. Adult male and female nematode worms were recovered from 26 (62%) specimens of the examined abomasa. The parasites were of yellow color; the body was filiform (slender) tapered towards the anterior end in male and towards both ends in female. Buccal capsules absent, the buccal cavity was small with a conspicuous dorsal lancet extended from dorsal wall. The cervical papillae were prominent and spine-like. The body length of the female worm was 16.6-20.5 (18.5 ± 0.3) mm. The anterior end to the cervical papillae was 3.19-4.30 (4.12 ± 0.5) mm. The vulva of the female had a linguiform process or flap, the tail is without a spine, and the anal pore at the posterior end of the body had a simple dorsal rim. The body of male was 10.4-14.7 (13.9 ± 2.0) mm in length. The male bursa had elongated lobes supported by long, slender rays. The small dorsal lobe was asymmetrical with Y-shaped dorsal rays. The spicules were long with a length of 0.52-0.54 (0.53 ± 0.05) mm, each provided with a small barb and pore near its extremity. Synlophe was bilaterally and dorsoventrally symmetrical; it extended from cephalic expansion over anterior 50% of prebursal or prevulvar body and consisted of a maximum of 42 ridges. The described species herein was compared with the three morphologically similar species Haemonchus mitchelli, Haemonchus okapiae, and H. longistipes with their synlophes consist of 42 ridges distributed over the anterior half of the body. These species can be separated by unique structural characteristics of their synlophes, spicules, and copulatory bursa. The most morphologically similar species to the recovered worm was H. longistipes. Also, some of the parameters with regard to morphology and morphometry of this parasite were described for the first time.
长柄血矛线虫是一种寄生于反刍动物胃内的胃肠道线虫，是最常见且致病性最强的寄生虫之一。基于光学和超微结构数据，本研究旨在首次鉴定由长柄血矛线虫引起的骆驼血矛线虫病。从2013年9月至2014年4月，每月从埃及开罗的主要屠宰场收集42头埃及单峰驼（偶蹄目：骆驼科）的皱胃。从26个（62%）被检查的皱胃样本中发现了成年雌雄线虫。这些寄生虫呈黄色；虫体呈丝状（细长），雄性前端逐渐变细，雌性两端逐渐变细。无口囊，口腔较小，有一个明显的从背壁伸出的背矛。颈乳突突出，呈刺状。雌虫体长16.6 - 20.5（18.5±0.3）mm。从前端到颈乳突的长度为3.19 - 4.30（4.12±0.5）mm。雌虫的阴门有一个舌状突起或瓣，尾部无刺，虫体后端的肛门孔有一个简单的背缘。雄虫体长10.4 - 14.7（13.9±2.0）mm。雄虫的交合伞有细长的叶，由长而细的辐肋支撑。小的背叶不对称，有Y形背辐肋。交合刺长，长度为0.52 - 0.54（0.53±0.05）mm，每根在其末端附近有一个小倒刺和小孔。体表饰带在两侧和背腹面均对称；它从头部膨大延伸至交合伞前或阴门前体部的前50%，最多由42条嵴组成。本文描述的物种与形态相似的三种物种米氏血矛线虫、奥氏血矛线虫和长柄血矛线虫进行了比较，它们的体表饰带均由分布在虫体前半部分的42条嵴组成。这些物种可通过其体表饰带、交合刺和交合伞的独特结构特征来区分。与所发现的虫体形态最相似的物种是长柄血矛线虫。此外，还首次描述了该寄生虫在形态学和形态测量学方面的一些参数。
