Fig. 1 in Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)

Fig. 1. Light micrographs of Lugol's solution preserved individuals and line drawings of Prorocentrum dentatum (A–I), P. obtusidens (J– AC) and P. shikokuense (AB, AD–AH). (A–B) Prorocentrum dentatum by Stein (1883). (C–I) Individuals from the Pacific Ocean. See Table 1 for location. (J) Prorocentrum obtusidens re-drawn from Schiller (1928). (K–AB) Individuals from a single sample collected offshore Taranto, Ionian Sea. (Y–AB) Valves of the same individual. (AB) One cell of P. obtusidens and two cells of P. shikokuense. (AC) P. obtusidens collected offshore Bari, Adriatic Sea. (AD) Prorocentrum shikokuense redrawn from Hada (1975). (AB, AE–AH) Individuals from a single sample of the harbor of Brindisi, Italy. (AE–AG) Chain-forming individuals. (AH) Note the intraspecific morphological variability. The last individual corresponds to a megacytic cell. Scale bar = 10 µm.