Sharma R S K, Rigby M C, Sumita S, Sani R A, Vidyadaran M K, Jasni S, Dailey M D
Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
Syst Parasitol. 2002 Sep;53(1):19-28. doi: 10.1023/a:1019997922052.
We redescribe the camallanid nematode Serpinema octorugatum (Baylis, 1933) from the box turtle Cuora amboinensis (Daudin) collected in Malaysia. In this redescription, we amend the original description by noting that there are only four cephalic papillae and that there are five pairs of post-anal papillae, and propose that the name of this species be corrected from S. octorugatus to S. octorugatum. Additionally, we removed the tissues overlying the buccal capsule and have used SEM studies to show that the peribuccal shields extend laterally from the buccal capsule, forming a surface possibly used in muscle attachment. Furthermore, we show that the supposedly non-cuticularised cylinder connecting the buccal capsule to the oesophagus in the Camallanidae is part of the buccal capsule and is, therefore, likely to be cuticularised. We also examine morphological measurements of taxonomic interest for correlations with total body length and find that many characters traditionally used for inter- and intra-specific comparisons are correlated with total body length in adult female worms. This suggests that comparisons between samples of adult female worms that do not account for the potential effect of total body length may be misleading. However, we show that some features of taxonomic interest are not correlated with total body length.
我们重新描述了从马来西亚采集的马来闭壳龟（Cuora amboinensis ，Daudin）体内的丝蛇线虫属（Serpinema）线虫——八褶丝蛇线虫（Serpinema octorugatum ，Baylis，1933）。在此次重新描述中，我们对原始描述进行了修正，指出该线虫只有四个头乳突，且有五对肛后乳突，并提议将该物种的名称从 S. octorugatus 更正为 S. octorugatum。此外，我们去除了覆盖在口囊上的组织，并通过扫描电子显微镜研究表明，口周盾从口囊横向延伸，形成了一个可能用于肌肉附着的表面。此外，我们还表明，在丝蛇线虫科中，连接口囊和食管的所谓非角质化圆柱体是口囊的一部分，因此很可能是角质化的。我们还检查了具有分类学意义的形态测量数据与虫体全长的相关性，发现许多传统上用于种间和种内比较的特征与成年雌虫的全长相关。这表明，在不考虑全长潜在影响的情况下，对成年雌虫样本进行比较可能会产生误导。然而，我们表明，一些具有分类学意义的特征与全长无关。
