AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Karenia mikimotoi | |
Date of the first record (?) | 1976 References (not structured): Ottway B, Parker M, McGrath D and Crowley M (1979) Observations on a bloom of Gyrodinium aureolum Hulbert on the south coast of Ireland, summer 1976, associated with mortalities of littoral and sub-littoral organisms. Irish Fisheries Investigations Series B No 18, 9pp. Comments: The species originally known as Gyrodinium aureolum now is recognised as Karenia mikimotoi and a bloom event was first noticed in 1976. |
Recipient region (?) | Country: Ireland LME: 24. Celtic-Biscay Shelf LME sub-region: Celtic seas References (not structured): Ottway B, Parker M, McGrath D and Crowley M (1979) Observations on a bloom of Gyrodinium aureolum Hulbert on the south coast of Ireland, summer 1976, associated with mortalities of littoral and sub-littoral organisms. Irish Fisheries Investigations Series B No 18, 9pp Comments: The south-east coast of Ireland was involved in a bloom event that resulted in the mortality or a large number of benthic invertebrates. |
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Source region (?) | LME: 24. Celtic-Biscay Shelf --> LME sub-region: Celtic seas --> LME sub-region: English Channel References (not structured): Boalch GT (1979) The dinoflagellate bloom on the coast of south-west England, August-September 1978. Journal of the Marine Biological Association of the United Kingdom 59: 515-517. Comments: At much the same time an event was recorded on the south-west coast of Britain and natural spread would seem to be the most likely reason for its appearance in Irish waters. |
Pathway / Vector (?) | Level of certainty: Possible Pathway: Natural spread from neighboring countries Vector: Water currents Comments: The species was known from the eastern Irish Sea as a result of a bloom in 1971. Events gradually moved westward with events taking place on the south-west coast of Ireland in the following years. Blooms were reported from the Plymouth area in 1978. |
Habitat type (?) | Marine Protected Area (MPA) Offshore Open coast Port vicinity Sheltered coastal area Strait/Sound References (not structured): Raine R, Joyce B, Patching JW (1993) Upwelling around the southwest Irish coast: near surface dynamics and blooms of the dinoflagellate Gymnodinium aureolum (Hulbert). ICES CM 1993/L:17. Comments: While the occurrence is offshore blooms become entrained into sheltered bays, estuaries and ports. |
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Wave exposure (?) | Exposed Semi exposed Sheltered References (not structured): Raine R, Joyce B, Patching JW (1993) Upwelling around the southwest Irish coast: near surface dynamics and blooms of the dinoflagellate Gymnodinium aureolum (Hulbert). ICES CM 1993/L:17. Comments: Occurred in summer offshore and inshore |
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Salinity range (?) | Venice system: 7. Euhaline [30-40psu] References (not structured): Ottway B, Parker M, McGrath D and Crowley M (1979) Observations on a bloom of Gyrodinium aureolum Hulbert on the south coast of Ireland, summer 1976, associated with mortalities of littoral and sub-littoral organisms. Irish Fisheries Investigations Series B No 18, 9pp. Comments: offshore species occurring on coastal fronts and becoming entrained inshore. |
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Temperature range (?) | Not entered |
Zonation / Substratum (?) | Unknown References (not structured): Raine R, O’Boyle S, O’Higgins T, White M, Patching J, Cahill B and McMahon T (2001) A satellite and field portrait of a Karenia mikimotoi (Hulbert) bloom off the south coast of Ireland , August 1998. Hydrobiologia 465: 187-193. McMahon T, Raine R and Silke J (1998) Oceanographic control of harmful phytoplankton blooms around southwestern Ireland. In: Blanco RB, Fernández J and Wyatt T (1998) Harmful Algae, Xunta de Galicia and Intergovernmental Oceanographic Commission of UNESCO,128-130. Comments: Not fully known while the species is pelagic during blooms the resting stages have not been recognised to-date |
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Reproductive duration (?) | Not entered | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Outbreak (Moderate level of certainty) References (not structured): Pybus C (1980) Observations on a Gyrodinium aureolum (Dinophyta) bloom off the south coast of Ireland. Journal of the Marine Biological Association of the United Kingdom 60: 661-674. Raine R, O’Boyle S, O’Higgins T, White M, Patching J, Cahill B and McMahon T (2001) A satellite and field portrait of a Karenia mikimotoi (Hulbert) bloom off the south coast of Ireland , August 1998. Hydrobiologia 465: 187-193. McMahon T, Raine R and Silke J (1998) Oceanographic control of harmful phytoplankton blooms around southwestern Ireland. In: Blanco RB, Fernández J and Wyatt T (1998) Harmful Algae, Xunta de Galicia and Intergovernmental Oceanographic Commission of UNESCO,128-130. Raine R, Joyce B, Patching JW (1993) Upwelling around the southwest Irish coast: near surface dynamics and blooms of the dinoflagellate Gymnodinium aureolum (Hulbert). ICES CM 1993/L:17, 9pp. Parker M, Dunne T, McArdle J (1982) Exceptional blooms in Irish waters. ICES CM 1982/ L:44. 10pp. Jenkinson IR, Connors PP (1980) The occurrence of the red tide causing organism Gyrodinium aureolum Hulbert (Dinophyceae), around the south and west of Ireland in August and September 1979. Journal of Sherkin Island 1(1): 127-146. Comments: This is a high impacting species periodically resulting in outbreaks resulting in mortalities of invertebrates and fish in culture. |
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Species status (?) | Non-indigenous species References (not structured): Guiry MD, Guiry GM (2013) AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 14 October 2013. Tangen K (1977) Blooms of Gyrodinium aureolum (Dinophyceae) in Norwegian European waters, accompanied by mortality in marine organisms. Sarsia 63(2): 123-133. Comments: It is generally recognised that this species originates from the north-west Pacific. It was first described from Japan in 1935 and subsequently appeared on the east coast of North America in 1957 and the was noted in Norway in 1966. It appeared in Ireland's south-east coast in 1976 causing notable blooms and gradually moved westward with an extensive impacting bloom in 2005 along the entire west coast of Ireland. |
Created by | Dan Minchin |
Last update by | Dan Minchin, 2013-11-11 |