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AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Alexandrium minutum [WoRMS] | |
Authority | Halim, 1960 | |
Family | Ostreopsidaceae | |
Order | Gonyaulacales | |
Class | Dinophyceae | |
Phylum | Myzozoa | |
Synonym (?) | Alexandrium angustitabulatum (Taylor FJR in Balech, 1995) Alexandrium ibericum (Balech, 1985) Alexandrium lusitanicum (Balech, 1985) Pyrodinum minutum (Halim) Taylor, 1976) |
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Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: SW Pacific, Atlantic |
Life form / Life stage (?) |
Comments: A. minutum is a photosynthetic dinoflagellate that, like many species in its genus, is responsible for outbreaks of Paralytic Shellfish Poisoning (PSP). |
Sociability / Life stage (?) |
References (not structured): Balech E (1989) Redescription of Alexandrium minutum Halim (Dinophyceae) type species of the genus Alexandrium. Phycologia, Volume 28(2) Hwang DF, Tsai YH, Liao HJ, Matsuoka K, Noguchi T, Jeng S S (1999) Toxins of the dinoflagellate Alexandrium minutum Halim from the coastal waters and aquaculture ponds in southern Taiwan. Fish. Sci. Volume 65: 171-172 Comments: A. minutum is a photosynthetic species with an elliptical nucleus. Cells of A. minutum are small, nearly spherical to ellipsoidal, somewhat dorsoventrally flattened and occasionally longer than wide. Cells are single with a characteristic ventral pore on the first apical plate. Thecal plates thin. Thecal surface ornamentation can vary from light to heavy reticulation (mostly confined to the hypotheca) with small scattered pores. Intercalary bands are present. Large range in size in this species: between 15-30µm in length and 13-24µm in trans diameter width |
Reproductive frequency (?) | Not entered |
Reproductive type (?) | Sexual References: Bolch CJ, Blackburn SI, Cannon JA, Hallegraeff GM, 1991. The resting cyst of the red-tide dinoflagellate Alexandrium minutum (Dinophyceae). Phycologia, 30(2):215-219. Comments: A. minutum has a typical, sexual dinoflagellate life cycle with a resting cyst capable of persisting in sediments for many years |
Developmental trait (?) | Resting stages References: Bolch CJ, Blackburn SI, Cannon JA, Hallegraeff GM, 1991. The resting cyst of the red-tide dinoflagellate Alexandrium minutum (Dinophyceae). Phycologia, 30(2):215-219. |
Characteristic feeding method / Life stage (?) |
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Mobility / Life stage (?) |
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Salinity tolerance range (?) | Not entered |
Habitat modifying ability potential (?) | Not entered |
Toxicity / Life stage (?) |
Comments: This phytoplankton species can also form extremely dense blooms that have the capacity to kill finfish, in addition to their PSP toxin production. As this species forms a tough resting cyst, it is easily transport by ballast water and in translocated shellfish, and it has been reported from most continents and every ocean. Control appears to be impossible. |
Bioaccumulation association (?) | Not entered |
Known human health impact? | Not entered |
Known economic impact? | Not entered |
Known measurable environmental impact? | Not entered |
Included in the Target Species list? | Not entered |
Association with vessel vectors (?) | Not entered |
Molecular information | Not entered |
Last update by | Aleksas Narščius, 2019-02-05 |