Koga M, Ishii Y, Huang W C, Xia B F
Department of Parasitology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Parasitol Res. 1987;74(1):69-72. doi: 10.1007/BF00534935.
Surface structures of the early third-stage larvae were examined by scanning electron microscopy. There were hemispherical head-bulbs at the apical ends. These bulbs could be clearly distinguished from the bodies. The head-bulbs (52 X 29 micron) had four transverse rows of sharp hooklets. The number of hooklets in each row was 37, 36, 38, and 43, posteriorly. The larvae posessed a pair of lateral lips in the head-bulb. Each of the lips had two labial papillae and an amphid between the papillae. Small unidentate cuticular spines were present along the entire length of larvae on their transverse striations. The number of these cuticular striations was 175-217. A pair of cervical papillae and an excretory pore were present on the anterior part of the body. Another pair of papillae was detected laterally on the posterior one-third of the body. The shape of the posterior body papillae resembled that of cervical papillae. The cuticular spines were absent around the anus.
通过扫描电子显微镜检查了早期第三阶段幼虫的表面结构。顶端有半球形的头部球状物。这些球状物可以与身体清晰区分。头部球状物（52×29微米）有四排横向的尖锐小钩。每排小钩的数量从后向前依次为37、36、38和43个。幼虫在头部球状物中有一对侧唇。每个唇有两个唇乳头，在乳头之间有一个化感器。在幼虫的横向条纹上，沿着幼虫的整个长度都有小的单齿角质刺。这些角质条纹的数量为175 - 217条。在身体前部有一对颈乳头和一个排泄孔。在身体后三分之一的侧面又检测到另一对乳头。身体后部乳头的形状与颈乳头相似。肛门周围没有角质刺。
