Kharchenko Vitaliy, Kuzmina Tetyana, Trawford Andrew, Getachew Mulugeta, Feseha Gebreab
Schmalhausen Institute of Zoology NAS of Ukraine, vul. B. Khmelnitskogo, 15, Kyiv, 01601, Ukraine.
Syst Parasitol. 2009 Jan;72(1):1-13. doi: 10.1007/s11230-008-9152-8. Epub 2008 Dec 2.
Fourth-stage larvae of four species of the Cyathostominae Nicoll, 1927 parasitic in donkeys Equus asinus L. from Ethiopia were identified mainly using moulting specimens. They are Cylicocyclus asini Matthee, Krecek & Gibbons, 2001, C. auriculatus (Looss, 1900) Chaves, 1930, Cyathostomum tetracanthum (Mehlis, 1831) Molin, 1861 (sensu Looss, 1900) and Cylindropharynx brevicauda Leiper, 1911. The larva of Cylicocyclus asini is similar to those of C. nassatus (Looss, 1900) Chaves, 1930 and C. leptostomum Kotlán, 1920, but differs from the former by the shape of the dorsal tooth in the oesophageal funnel, which is notably smaller than in C. asini but similar to that of C. leptostomum. However, the larva of C. asini differs from that of C. leptostomum in the size of the buccal capsule, which is notably larger than in C. leptostomum but similar to that of C. nassatus. The larva of C. auriculatus is very similar to that of C. insigne (Boulenger, 1917) Chaves, 1930. The larva of Cyathostomum tetracanthum is similar to those of Cylicostephanus bidentatus (Ihle, 1925) Lichtenfels, 1975, C. goldi (Boulenger, 1917) Lichtenfels, 1975 and Cyathostomum catinatum Looss, 1900. The larva of Cylindropharynx brevicauda is similar to that of Petrovinema skrjabini (Ershov, 1930) Ershov, 1943 but smaller in size. Including the four cyathostomine species identified in the present study, 36 species belonging to 13 genera have so far been described and identified of a total of 64 recognised and confirmed species of equine strongyles.
主要通过蜕化标本鉴定了寄生于埃塞俄比亚驴（Equus asinus L.）体内的4种杯环线虫亚科（Cyathostominae Nicoll，1927）的第四期幼虫。它们分别是2001年的马圆环线虫（Cylicocyclus asini Matthee、Krecek & Gibbons）、1930年的耳状圆环线虫（C. auriculatus (Looss, 1900) Chaves）、1861年的四棘杯环线虫（Cyathostomum tetracanthum (Mehlis, 1831) Molin，按照1900年Looss的分类法）以及1911年的短尾柱咽线虫（Cylindropharynx brevicauda Leiper）。马圆环线虫的幼虫与1930年的纳氏圆环线虫（C. nassatus (Looss, 1900) Chaves）和1920年的细口圆环线虫（C. leptostomum Kotlán）的幼虫相似，但在食管漏斗中的背齿形状上与前者不同，前者的背齿明显小于马圆环线虫的，但与细口圆环线虫的相似。然而，马圆环线虫的幼虫在口囊大小上与细口圆环线虫不同，前者的口囊明显大于细口圆环线虫的，但与纳氏圆环线虫的相似。耳状圆环线虫的幼虫与1930年的显著圆环线虫（C. insigne (Boulenger, 1917) Chaves）的幼虫非常相似。四棘杯环线虫的幼虫与1975年的双齿杯冠线虫（Cylicostephanus bidentatus (Ihle, 1925) Lichtenfels）、1975年的戈尔迪杯冠线虫（C. goldi (Boulenger, 1917) Lichtenfels）以及1900年的卡蒂纳杯环线虫（Cyathostomum catinatum Looss）的幼虫相似。短尾柱咽线虫的幼虫与1943年的斯氏柱咽线虫（Petrovinema skrjabini (Ershov, 1930) Ershov）的幼虫相似，但尺寸较小。包括本研究中鉴定出的4种杯环线虫在内，到目前为止，在总共64种已确认的马属圆线虫中，已描述并鉴定出属于13个属的36个物种。
