Anigsteinia clarissima, (ANIGSTEIN, 1912) ISQUITH, 1968

Yan, Ying, Fan, Yangbo, Chen, Xiangrui, Li, Lifang, Warren, Alan, Al-Farraj, Saleh A. & Song, Weibo, 2016, Taxonomy and phylogeny of three heterotrich ciliates (Protozoa, Ciliophora), with description of a new Blepharisma species, Zoological Journal of the Linnean Society 177 (2), pp. 320-334 : 321-323

publication ID

https://doi.org/ 10.1111/zoj.12369

DOI

https://doi.org/10.5281/zenodo.10543806

persistent identifier

https://treatment.plazi.org/id/DA7BBB25-1F2B-A135-FC80-03094F92F892

treatment provided by

Marcus

scientific name

Anigsteinia clarissima
status

 

ANIGSTEINIA CLARISSIMA ( ANIGSTEIN, 1912) ISQUITH, 1968 View in CoL ( FIGS 1A–D View Figure 1 , 2–3 View Figure 2 View Figure 3 , 5A–F, H–N, Q; TABLES View Figure 5 1, 2)

Anigsteinia clarissima View in CoL was originally described by Anigstein (1912) as Blepharisma clarissimum View in CoL . Numerous subsequent papers dealt with this species but none provided a clear definition ( Kahl, 1928, 1932; Yagiu, 1943; Fenchel, 1969; Isquith & Repak, 1974; Dragesco & Dragesco-Kernéis, 1986). Thus, an improved diagnosis based on previous reports and on new data is supplied here.

Improved diagnosis Body length about 160–560 μm in vivo, length to width ratio 7–10:1; buccal cavity about half body length; 63–101 adoral membranelles; 18– 32 somatic kineties; macronucleus moniliform with 14– 50 nodules; conspicuous lacunar contractile vacuole system; marine habitat.

Description based on Qingdao population Body 230– 300 × 35–50 μm in vivo: slender and slightly contractile with tapered posterior end ( Figs 1A View Figure 1 , 2A–D View Figure 2 ); bilaterally flattened, width to thickness ratio about 3:1. Pellicle flexible, with numerous colourless, spherical cortical granules (0.8–1 μm in diameter) arranged in three or four longitudinal rows between the kineties ( Fig. 2H View Figure 2 ). Peristome long and narrow, commencing slightly below anterior end of body and extending to mid-body region ( Fig. 2A–E View Figure 2 ). About 60–100 adoral membranelles. Paroral membrane conspicuous ( Figs 1B View Figure 1 , 2F View Figure 2 , 3B, C, H View Figure 3 ). Cytoplasm greyish and opaque, packed with globular granules and food vacuoles that are frequently abundant ( Fig. 2D, G View Figure 2 ). Macronucleus moniliform with 14 to 26 interconnected nodules, each nodule ellipsoidal and about 7–10 μm in diameter; micronuclei not detected ( Figs 1C View Figure 1 , 2G View Figure 2 , 3A, H View Figure 3 ). Conspicuous lacunar contractile vacuole (CV) system, CV terminally located ( Figs 1A View Figure 1 , 2B View Figure 2 ). Locomotion by gliding over substratum, i.e. sand grains, organic debris, bottom of Petri dish.

Eighteen to 26 somatic kineties, including six to 11 (right) shortened postoral rows ( Figs 1C, D View Figure 1 , 3A, E–G View Figure 3 ). Cilia about 12 μm long in vivo. Each adoral membranelle consists of one short and two long rows of basal bodies. Paroral membrane divided into three parts ( Fig. 1B View Figure 1 ): anterior and posterior parts consist of dikinetids with only left basal body of each pair ciliated; middle part consists of several trikinetid fragments with all three basal bodies in each trikinetid ciliated.

Kingdom

Chromista

Phylum

Ciliophora

Class

Heterotrichea

Order

Heterotrichida

Family

Blepharismidae

Genus

Anigsteinia

Loc

Anigsteinia clarissima

Yan, Ying, Fan, Yangbo, Chen, Xiangrui, Li, Lifang, Warren, Alan, Al-Farraj, Saleh A. & Song, Weibo 2016
2016
Loc

Anigsteinia clarissima

Isquith 1968
1968
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