Scientific nameGymnodinium catenatum
SYSTEM
Marine
 
COMMON NAMES
English: naked dinoflagellate, estuarine dinoflagellate, chain-forming dinoflagellate
 
DESCRIPTION
Gymnodinium catenatum is a toxic, bloom forming species of microalgae. It is usually seen in long, swimming chains of tiny cells, with up to 32 cells in a chain (occasionally 64). It is also seen as solitary cells with a green-brown colour. The size of these cells ranges from 38 - 53 um long and 33 - 45 um wide. The cells are circular to squarish in shape, with many rounded organelles within them. Cysts of G. catenatum are brown, spherical and range in size from 45 - 50 um in diameter.
 
KNOWN INTRODUCED RANGE
ASEAN: Philippines, Singapore
WORLD: Argentina, Baha De La Paz, China, Cuba, Iberian Coastal, Japan, Korea, Republic Of, Mexico, Pacific-Eastern Central, Portugal, Spain, Venezuela, Australia, Brazil, Costa Rica, Hong Kong, Italy, Korea Democratic People’s Republic Of, Mediterranean and Black Sea, New Zealand, Uruguay
 
PATHWAY
Transport – Ship/boat Ballast Water
Aquaculture and Fisheries
 
REASON FOR INTRODUCTION
Ballast water can transport this organism long distances to new environments. Cysts of G. catenatum can be accidentally translocated through aquaculture and fisheries activities, such as in oyster cages or on mussel ropes.
 
IMPACTS
Toxins (saxitoxins and gonyautoxins) produced by Gymnodinium catenatum can cause Paralytic Shellfish Poisoning (PSP). Mussels, oysters and scallops from areas affected by G. catenatum blooms have been highly contaminated with paralytic shellfish toxins, resulting in human poisonings (NIMPIS, 2002c).
 
Source: Global Invasive Species Database (GISD) 2015. Species profile Gymnodinium catenatum. Available from: http://www.iucngisd.org/gisd/species.php?sc=645 [Accessed 09 September 2019]
FilenameGymnodinium catenatum.pdf
Filesize94.91 kB
Filetypepdf (Mime Type: application/pdf)
Last updated on 09/13/2019 00:26