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International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Imprimer: 1521-9429
ISSN En ligne: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v19.i4.30
pages 327-336

Protoperidinium sphaericum (G. Murr. et Whitting) Balech (The History of Study, Morphology and Synonymy)

A. F. Krakhmalnyi
Institute for Evolutionary Ecology, NAS of Ukraine, 37 Acad. Lebedeva Str., Kiev 03143, Ukraine
Behrouz Zarei Darki
Tarbiat Modares University


This paper reveals the morphological study of Protoperidinium sphaericum, a rare species of marine dinoflagellates (Dinoflagellata, Dinophyta) found in the plankton of the Persian Gulf near the island of Ormuz (territorial waters of Iran). The study proved the morphological identity of P. spaericum, P. hamatum Balech 1979, found earlier in the Persian Gulf, and P. sphaeroides (Dangeard) Balech 1974 known only from the Mediterranean Sea. After analyzing the literature and original data, and in accordance with the principle of priority, P. hamatum and P. sphaeroides are considered synonymous with P. sphaericum. The range of P. sphaericum includes Mediterranean, Adriatic and Caribbean Seas, Mexican, Persian and Oman Gulfs, Southwest Atlantic, and the coastal waters of west Africa and Japan.