Sriwati Rina, Ozawa Sota, Morffe Jans, Hasegawa Koichi
Acta Parasitol. 2016 Dec 1;61(4):720-728. doi: 10.1515/ap-2016-0101.
Nematodes, belonging to the family Thelastomatidae, are parasites of saprophytic terrestrial arthropods, mainly cockroaches. American cockroach Periplaneta americana (Linnaeus, 1758) has high environmental adaptability, and has been spread worldwide by human activity. There are several reports of thelastomatid parasitic nematodes of P americana in the world. Here, the thelastomatid nematode Hammerschmidtiella diesingi (Hammerschmidt, 1838) (Oxyuridomorpha: Thelastomatidae), isolated from P americana is recorded for the first time in Japan. Through morphometrics, DIC and SEM observations, we confirmed that specimens of the present study agree with previous records of H. diesingi. DNA sequencing of the partial D2/D3 LSU expansion segment of the 28S ribosomal RNA gene revealed that H. diesingi from Japan matches with H. diesingi from other countries. Our contributions are very useful and fundamental for further analysis of the cockroach and parasite relations.
属于瘤圆线虫科的线虫是腐生性陆生节肢动物的寄生虫，主要寄生于蟑螂。美洲大蠊（Periplaneta americana，Linnaeus，1758）具有很强的环境适应性，已通过人类活动传播到世界各地。世界上有几篇关于美洲大蠊被瘤圆线虫寄生的报道。在此，首次记录了从美洲大蠊中分离出的瘤圆线虫迪氏哈默线虫（Hammerschmidtiella diesingi，Hammerschmidt，1838）（尖尾总科：瘤圆线虫科）在日本的情况。通过形态测量、微分干涉差显微镜（DIC）和扫描电子显微镜（SEM）观察，我们确认本研究的标本与迪氏哈默线虫的先前记录相符。对28S核糖体RNA基因的部分D2/D3 LSU扩增片段进行DNA测序，结果显示来自日本的迪氏哈默线虫与其他国家的迪氏哈默线虫相匹配。我们的研究成果对于进一步分析蟑螂与寄生虫的关系非常有用且具有基础性意义。
