Gyrodinium Kofoid & Swezy

[ref. ID; 1618]
Annulus descending left spiral; sulcus extending from end to end; nucleus central; pusules; surface smooth or striated; chromatophores rarely present; cytoplasm colored; holozoic; salt or fresh water. (ref. ID; 1618)


Gyrodinium biconicum Kofoid & Swezy (ref. ID; 1618)
Description; In salt water. (ref. ID; 1618)
Measurements; 68 um long. (ref. ID; 1618)
Gyrodinium fusiforme Kofoid & Swezy (ref. ID; 3544, 7121)
Description; Free-living. GenBank accession number AB120002. (ref. ID; 7121)
Geographic origin; Otaru-Bay, Hokkaido, Japan. (ref. ID; 7121)
Gyrodinium glacilis Hada, 1970 (ref. ID; 3544 original paper)
Description; The small body is fusiform, tapering at the apical and antapical ends. The distance between two terminals of the girdle on the ventral face is one-third of the body. The sulcus does not reach the both ends. Many chromatophores are ovoid and medium-sized. The nucleus is comparatively small and usually in the anterior half of the body. (ref. ID; 3544)
Comments; The new form is easily distinguishable from the fusiform species, G. briannia Kofoid & Swezy, G. fusiforme Kofoid & Swezy and G. spirale Entz, in smaller size and in having chromatophores. (ref. ID; 3544)
Measurements; Length 22-33 um; breadth 12-13 um. (ref. ID; 3544)
Gyrodinium glacilis var. microgranum Hada, 1970 (ref. ID; 3544 original paper)
Description; This form is closely allied to the typical form in size and general contour, but different in having numerous minute chromatophores. Therefore, the Hada decides that the latter is a variety of the G. glacilis, var. microgranum. (ref. ID; 3544)
Measurements; Length 25-42; breadth 12-15 um. (ref. ID; 3544)
Gyrodinium helveticum (Penard) Takano & Horiguchi (ref. ID; 7121)
Description; Free-living. GenBank accession number FJ024299. (ref. ID; 7121)
Geographic origin; Lake Baikal, Russia. (ref. ID; 7121)
Gyrodinium hyalinum Schilling (ref. ID; 1618) or (Schilling) Kofoid & Swezy (ref. ID; 3517)
Description; In fresh water. (ref. ID; 1618)
Measurements; About 24 um long. (ref. ID; 1618)
Gyrodinium instriatum Freudenthal & Lee (ref. ID; 7121)
Description; Free-living. GenBank accession number AY721981. (ref. ID; 7121)
Geographic origin; New River estuary, North Carolina, USA. (ref. ID; 7121)
Gyrodinium lachrymum (Meunier) (ref. ID; 3544)
Description; The body is inverted fusiform with a somewhat curved prolonged apical end and a rounded or broadly conical antapical end. The sulcus is typically narrow, and the distance between the starting and finishing points of the girdle is usually as long as a quarter of the total length of the body. Having many longitudinal striae, the surface of the body is more or less rigid, and the surface layer is composed of a protoplasmic zone containing numerous minute trichocysts arranged side by side. Chromatophores are typically several and rounded. The nucleus is large and ellipsoidal near the central region. The protoplasm is so granulated that pulsing vacuoles are invisible in fixed specimens. (ref. ID; 3544)
Measurements; Length 60-135; breadth 28-50 um. In the present study large specimens were frequently examined as compared with those recorded in the papers by Meunier (1907) and Balech & El-Sayed (1965). It seems to be due to satisfactory fixation of plankton samples. (ref. ID; 3544)
Gyrodinium rubrum (Kofoid & Swezy) Takano & Horiguchi (ref. ID; 7121)
Description; Free-living. GenBank accession number AB120003. (ref. ID; 7121)
Geographic origin; Otaru-Bay, Hokkaido, Japan. (ref. ID; 7121)
Gyrodinium spirale (Bergh) Kofoid & Swezy, 1921 (ref. ID; 4151) reported year? (ref. ID; 7121)
Description; Free-living. GenBank accession number AB120001. (ref. ID; 7121)
Geographic origin; Otaru-Bay, Hokkaido, Japan. (ref. ID; 7121)