Tidepool Dinoflagellates


 At low tide, many tidepools can be seen in the intertidal rocky shores. It is not uncommon to see discoloured water in such pools especially in summer. Some of the blooms are caused by prasinophytes, such as Tetraselmis, but most of them are formed by dinoflagellates. Only limited number of species of dinoflagellates seem to form blooms in such environments. In Japan, we have found five species of dinoflagellates which can form blooms in the tide pools.


Rocky shore of Miura Peninsula, Kanagawa Pref., Japan. Environmental conditions of each pool is different depending on its height.


A brown-coloured bloom formed by a dinoflagellate.

 Only five species have been found to form blooms in tide pools in Japan:Scrippsiella hexapraecingula, S. gregaria, Gymnodinium pyrenoidosum, Alexandrium hiranoi, Dinothrix paradoxa

Peridiniales
Calciodinellaceae
Scrippsiella
Scrippsiella hexapraecingula
Horiguchi et Chihara



Scrippsiella gregaria (Lombard et Capon) Loeblich, Schmidt et Scherley



Gonyaulacales
Goniodomaceae
Alexandrium
Alexandrium hiranoi
Kita et Fukuyo



 
Gymnodiniales
Gymnodiniaceae
Gymnodinium
Gymnodinium pyrenoidosum
Horiguchi et Chihara


Dinotricales
Dinocloniaceae
Dinothirx
Dinothrix paradoxa
Pascher


return to Dinoflagellate Homepage