Metanophrys sinensis Song & Wilbert, 2000
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publication ID |
https://doi.org/ 10.5852/ejt.2016.191 |
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DOI |
https://doi.org/10.5281/zenodo.3852224 |
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persistent identifier |
https://treatment.plazi.org/id/03812658-FFF5-6E65-FD9E-2A63FCA5F8A9 |
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treatment provided by |
Valdenar |
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scientific name |
Metanophrys sinensis Song & Wilbert, 2000 |
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Metanophrys sinensis Song & Wilbert, 2000
Figs 4E View Fig , 6 View Fig ; Table 2
This species was described by Song & Wilbert (2000) in detail based on their Qingdao population. In the current work, it is reported for the first time from South China Sea. An improved diagnosis is provided herein based on all these data; the improved parts are highlighted in bold.
Improved diagnosis
Slender to elongated oval body shape; in vivo about 25–50 × 10–20 µm with pointed anterior end; buccal field about 30%–50% of body length; mostly ten somatic kineties, of which somatic kinety 1 consists of c. 35 basal pairs; M1 composed of two rows, each with 7–10 kinetosomes, longer than M2; two-rowed M2; contractile vacuole pore located near posterior end of kinety 2; extrusomes present; marine habitat.
Description of Zhanjiang population
Body 25–30 × 10–15 µm in vivo, usually elongate-oval in outline, with anterior end distinctly pointed and posterior rounded ( Fig. 6 View Fig A–B). Body asymmetrical in outline when viewed ventrally, with anterior end slightly curved sideways ( Fig. 6 View Fig A–B). Ventral side almost straight, while dorsal side convex. Buccal field 2/5 to ½ of body length, with cytostome located anterior to equatorial plane of body ( Fig. 6C View Fig ). Cilia densely packed, about 7–8 µm long. Caudal cilium about 15 µm in length ( Fig. 6B View Fig ). Pellicle thin and slightly notched, with extrusomes about 2–3 µm long and dense beneath cortex ( Fig. 6D View Fig ). Endoplasm colourless to greyish, containing several food vacuoles and bar- or dumbbell-like crystals, which are usually 3 µm long and located in anterior and posterior regions of body ( Fig. 6 View Fig A–B, G). One large round to oval macronucleus approximately centrally located, with many small, irregularly shaped nucleoli on surface. Contractile vacuole about 5 µm in diameter and caudally positioned near ventral side ( Fig. 6B View Fig ). Movement with no special features, including swimming moderately fast, sometimes continuously swimming in water without pause.
Ten somatic kineties arranged longitudinally, and dikinetids about ¾ of length of each in anterior part ( Fig. 6J View Fig ). Buccal apparatus consists of three Parauronema -like membranelles ( Fig. 6 View Fig E–F). M1 slightly below apex and composed of two rows of kinetids with 7–10 basal bodies each, and longer than M2. M2 two-rowed, containing about five basal bodies in each row. M3 located close to M2, normally with three short, obliquely arranged rows of basal bodies. Scutica Y-shaped, with several pairs of kinetosomes ( Fig. 6I View Fig ). Silverline system in quadrangular mesh-pattern ( Fig. 6H View Fig ). Contractile vacuole pore located near posterior end of kinety 2.
Ecological features
Salinity 21‰, pH 7.3 and water temperature 26 °C.
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