Identification and toxicity of the resting cysts of Protogonyaulax found in Ofunato bay [Japan]

agentes nocivos ambiente bentico aquatic environment asia asie benthic environment coasts costa environment environnement facteur nuisible identification injurious factors invertebrados invertebrates japan japon mastigophora medio ambiente methode methods milieu aquatique milieu benthique physiographic features protozoa protozoaire substance toxique toxic substances toxinas toxine toxins