Ito Akira, Eckardt Winnie, Stoinski Tara S, Gillespie Thomas R, Tokiwa Toshihiro
Ookusa Animal Clinic, Ookusa 503, Matsue, Shimane 690-0032, Japan.
Dian Fossey Gorilla Fund International, Atlanta, USA; Departments of Environmental Sciences and Environmental Health, Emory University and Rollins School of Public Health, Atlanta, USA.
Eur J Protistol. 2018 Aug;65:42-56. doi: 10.1016/j.ejop.2018.05.002. Epub 2018 May 18.
Four new species, Troglodytella gracilis, T. virunga, T. dolium, and Gorilloflasca longior were described from the mountain gorillas in Rwanda. The three Troglodytella species share a retractable adoral ciliary zone, four non-retractable ciliary arches, two broad skeletal plates, a skeletal rod plate, numerous longitudinal cortical grooves, and four contractile vacuoles. The anterior ciliary arch is the longest of the four arches, extending transversely on the left body surface. T. gracilis and T. virunga are characterized by an elongated body, a tail flap, and a wedge-shaped macronucleus. T. virunga can be distinguished from T. gracilis by a trifurcate dorsal lobe, three right lobes, and two ventral spines. T. dolium has a barrel-shaped body and a rod-shaped or boomerang-shaped macronucleus. The buccal infraciliature of the three Troglodytella is composed of an adoral polybrachykinety, a perivestibular polybrachykinety, and paralabial kineties. G. longior has a long flask-shaped body, a vestibulum, a frontal lobe, a posterior cavity, an ellipsoidal or peanut-shaped macronucleus, a contractile vacuole, non-retractable adoral and vestibular ciliary zones in buccal area, a cavity ciliary zone, and two longitudinal dorsal ciliary zones. The infraciliature of G. longior is the same as that of G. africana.
从卢旺达的山地大猩猩身上发现了四个新物种，分别是细巧隐穴虫（Troglodytella gracilis）、维龙加隐穴虫（T. virunga）、桶形隐穴虫（T. dolium）和长形大猩猩吸虫（Gorilloflasca longior）。三种隐穴虫属物种具有可伸缩的口前纤毛带、四条不可伸缩的纤毛弓、两块宽阔的骨骼板、一块骨骼杆板、许多纵向皮层沟以及四个伸缩泡。前纤毛弓是四条弓中最长的，在虫体左侧表面横向延伸。细巧隐穴虫和维龙加隐穴虫的特征是身体细长、有尾瓣和楔形大核。维龙加隐穴虫可通过三叉形背叶、三个右叶和两个腹刺与细巧隐穴虫区分开来。桶形隐穴虫身体呈桶状，大核呈杆状或回飞棒状。三种隐穴虫属的口下纤毛结构由口前多列短动纤毛、前庭多列短动纤毛和唇旁动纤毛组成。长形大猩猩吸虫身体呈长瓶状，有前庭、额叶、后腔、椭圆形或花生形大核、一个伸缩泡、口区不可伸缩的口前和前庭纤毛带、腔纤毛带以及两条纵向背纤毛带。长形大猩猩吸虫的下纤毛结构与非洲大猩猩吸虫相同。
