Protoperidinium ovum (J. Schiller) Balech 1974

Bhowal, A, Purushothaman, J & Siddique, A, 2023, Taxonomic studies of marine dinoflagellates and distribution in the coastal waters of Kakinada, Andhra Pradesh, India, Indian Journal of Geo Marine Sciences 52 (8), pp. 390-401 : 397

4. Protoperidinium ovum (J. Schiller) Balech 1974

Diagnostic characters: Thecate dinoflagellate with ovoid shaped body. Apical horn short but prominent, separated from ovoid cell. Presence of two short antapical horns, which run parallel to each other and are slightly curved. Presence of a hypothecal pore. Presence of prominent left sulcal list ( Fig. 2d ).

Distribution: Bay of Bengal 12, Andaman Sea 11, North Arabian Sea 22, Mediterranean waters 26, Black Sea 27, Mexican waters, Pacific Ocean 33, Brazil waters 29, Canary Islands 34, Australian waters 31.

This species was recorded from the station APK1 (surface waters), APK2, APK3 (subsurface depths), and APK4 (surface and subsurface depths) for the first time in Kakinada waters, and in the state of Andhra Pradesh.

Figures

Fig. 2 — Micrographs (Light microscope and SEM images) of species recorded from Kakinada coastal waters: (a) Protoperidinium depressum (Bailey) Balech 1974; (b) Protoperidinium brochii (Kofoid & Swezy) Balech, 1974; (c) Protoperidinium leonis (Pavillard) Balech 1974; (d) Protoperidinium ovum (J. Schiller) Balech 1974; (e) Protoperidinium pallidum (Ostenfeld) Balech 1973; (f) Spiraulax kofoidii H. W Graham, 1942; (g) Dinophysis caudata Saville-Kent 1881; (h) Dinophysis caudata Saville-Kent 1881; (i) Ornithocercus magnificus Stein 1883; (j) Phalacroma doryphorum Stein 1883; (k) Tripos inflatus (Kofoid) F. Gómez, 2013; (l) Tripos trichoceros (Ehrenberg) F. Gómez, 2013; (m) Tripos candelabrum (Ehrenberg) F. Gómez, 2013; (n) Tripos vultur (Cleve) F. Gómez 2013; (o) Tripos vultur (Cleve) F. Gómez 2013 magnified view; and (p) Triadinium polyedricum (Pouchet) Dodge, 1981