Anigsteinia clarissima, (ANIGSTEIN, 1912) ISQUITH, 1968
publication ID |
https://doi.org/ 10.1111/zoj.12369 |
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https://doi.org/10.5281/zenodo.10543806 |
persistent identifier |
https://treatment.plazi.org/id/DA7BBB25-1F2B-A135-FC80-03094F92F892 |
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Marcus |
scientific name |
Anigsteinia clarissima |
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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.
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Anigsteinia clarissima
Yan, Ying, Fan, Yangbo, Chen, Xiangrui, Li, Lifang, Warren, Alan, Al-Farraj, Saleh A. & Song, Weibo 2016 |
Anigsteinia clarissima
Isquith 1968 |