Protoperidinium brevipes (Paulsen) Balech 1974

Krakhmalnyi, Aleksandr F., Krakhmalnyi, Maxim A., Terenko, Galyna V. & Goncharenko, Igor V., 2023, Dominant Species Of The Genus Protoperidinium Bergh (Peridiniales: Protoperidiniaceae) In The Black Sea, Zootaxa 5339 (5), pp. 427-448 : 430-431

Protoperidinium brevipes (Paulsen) Balech 1974 . Rev. Mus. Argent. Cienc. Nat. “ B. Rivadavia ”, Hydrobiologia 4 (1): 60. ( Figs. 3–4, 7 ) .

References: Lebour 1925: 131, Pl. XXVII, Fig. 2 a–d ; Schiller 1937: 200, Fig. 196 a–m; Kiselew 1950: 186, Fig. 310 a– g; Wood 1968: 98, Fig. 287 (as Peridinium brevipes ); Konovalova & Selina 2010: 146, Table XIII, 6 a–b, XIX 1–2; Krakhmalny 2011: 191, Table 76, Figs. 5, 9–15 ;

Basionym: Peridinium brevipes Paulsen 1908 . Nord. Plankton 18: 108, Fig. 151.

Synonyms: Peridinium varicans Paulsen 1911 , P. incurvum Lindemann 1924 .

Description: Cells rounded or pentagonal, with a conical epitheca and an apical pore. The epithecal plate pattern comprises seven precingular plates (7ʹʹ), four apical plates (4ʹ), three anterior intercalary plates (3a), 1ʹ plate – “meta”, 2a – “quadra”. The cingulum median, slightly ascending, deep, bordered. The sulcus broadens towards the antapex. The hypotheca with two short antapical spines. Thecal plates littered with microtubercles and pores. Dimensions: 31.7–58.0 μm long and 27.6–52.8 μm wide.

Distribution: Coastal cold-water species ( Steidinger & Tangen 1997). Data on the distribution of P. brevipes are given from the GBIF.org (2022) ( Fig. 79 ).

Figures

FIGURES 1–10. Protoperidinium of the Black Sea. 1–2—P. achromaticum; 3–4, 7—P. brevipes; 5, 10—P. quadrioblongum; 6, 8–9—P. excentricum. Designations: 1ʹ—first apical plate, 2a—second intercalary plate. 4, 6–9—epifluorescence; 5, 10— transmitted light. Scale bars: 10 µm.

FIGURES 77–85. Global distribution maps of some Protoperidinium species. 77—Protoperidinium achromaticum; 78—P. bipes; 79—P. brevipes; 80—P. brochii; 81—P. claudicans; 82—P. conicum; 83—P. crassipes; 84—P. depressum; 85—P. divergens.