AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Asparagopsis armata | |
Date of the first record (?) | 1939 References (not structured): DeValera M (1942) A red algae new to Ireland: Asparagopsis armata Harv. on the west coast. Irish Naturalists’ Journal 8: 30-34. DeValera M (1957) A note on the distribution of Asparagopsis armata and Falkenbergia rufolanosa in Ireland as compared with Spain. Coll. Bot. 5: 377-380. Comments: Found on the shores of Mweenish Bay in the south of Connemara in July 1941. Accounts of its appearance before this date of 1939 refer to its tetrasporophytic Falkenbergia phase. |
Recipient region (?) | Country: Ireland LME: 24. Celtic-Biscay Shelf LME sub-region: Celtic seas References (not structured): DeValera M (1942) A red algae new to Ireland: Asparagopsis armata Harv. on the west coast. Irish Naturalists’ Journal 8: 30-34. Morton, O. (2003). The marine macroalgae of County Donegal, Ireland. Bulletin of the Irish Biogeographical Society 27: 3-165. Comments: The Falkenberia phase was found in Galway Bay. The first attention to the species was from the west coast of Ireland in Mweenish Bay at the entrance to Galway Bay. The species is now (2013) found on all but the eastern Irish coasts. The tertrasporophyte stage only being found on the Connemara coast. |
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Source region (?) | Unknown References (not structured): Harvey, C.C., & Drew, K.M. 1949. Occurrence of Falkenbergia on the English coast. Nature, 164: 542-543. Comments: Originated in Australasia but whether this was directly introduced to Ireland from this region is unknown. The species is also present in Britain but not known there until 1949 from Lundy Island in the Bristol Channel. |
Pathway / Vector (?) | Level of certainty: Possible Pathway: Vessels Vector: Ship’s hull References (not structured): DeValera M (1942) A red algae new to Ireland: Asparagopsis armata Harv. on the west coast. Irish Naturalists’ Journal 8: 30-34. Comments: DeValera supposes that the species arrived as hull fouling on liners arriving from Cherbourg that moored within Galway Bay in the years before the Second World War, a time when this service was provided. |
Habitat type (?) | Aquaculture sites Sheltered coastal area References (not structured): Kraan S and Barrington KA (2005) Commercial farming of Asparagopsis armata (Bonnemaisoniaceae, Rhodophyta) in Ireland, maintainance of an introduced species? Journal of Applied Phycology 17: 103-110. |
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Wave exposure (?) | Semi exposed Sheltered References (not structured): De Valéra, M., Pybus, C., Casley, B. & Webster, A. (1979). Littoral and benthic investigations on the west coast of Ireland X. Marine algae of the northern shores of the Burren, Co. Clare. Proceedings of the Royal Irish Academy 79B: 259-269. Comments: Encountered diving and on the shore on bedrock in Mannin Bay subject to moderate exposure(DM pers. ob.) |
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Salinity range (?) | Venice system: 7. Euhaline [30-40psu] Comments: Only noted in coastal areas with low turbidity and high salinity (DM pers. ob.) |
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Temperature range (?) | Min: 5 Max: 25 References (not structured): Ní Chualáin, F., Maggs, C.A., Saunders, G. W. & Guiry, M.D. (2004). The invasive genus Asparagopsis (Bonnemaisoniaceae, Rhodophyta): molecular systematics, morphology and ecophysiology of Falkenbergia isolates. Journal of Phycology, 40: 1112-1126. Comments: The Falkenbergia stage is known to survive in Ireland over the range 5-25C and growth takes place over the range of 9 to 23C. |
Zonation / Substratum (?) | Benthic: Littoral (Benthic) Sublittoral within photic zone Substratum: Artificial (manmade) Biogenic (living or nonliving) Hard (cobbles to bedrock) References (not structured): Kraan S and Barrington KA (2005) Commercial farming of Asparagopsis armata (Bonnemaisoniaceae, Rhodophyta) in Ireland, maintainance of an introduced species? Journal of Applied Phycology 17: 103-110. De Valéra, M., Pybus, C., Casley, B. & Webster, A. (1979). Littoral and benthic investigations on the west coast of Ireland X. Marine algae of the northern shores of the Burren, Co. Clare. Proceedings of the Royal Irish Academy 79B: 259-269. Comments: Often found growing epiphytically on other algae. |
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Reproductive duration (?) | Medium References (not structured): Ní Chualáin, F., Maggs, C.A., Saunders, G. W. & Guiry, M.D. (2004). The invasive genus Asparagopsis (Bonnemaisoniaceae, Rhodophyta): molecular systematics, morphology and ecophysiology of Falkenbergia isolates. Journal of Phycology, 40: 1112-1126. Comments: In Ireland the tetrasporangial formation took place over 17 to 19C | |
Reproductive seasonality (?) | Unknown References (not structured): Guiry, M.D. & Dawes, C.J. (1992). Daylength, temperature and nutrient control of tetrasporogenesis in Asparagopsis armata (Rhodophyta). Journal of Experimental Marine Biology and Ecology 158: 197-219. Comments: Daylength is important in relation to the production of tetrasporangia. The critical daylength duration is 8 to 9 hours. |
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Migration pattern (?) | Not relevant |
Population status (?) | Abundant (Moderate level of certainty) References (not structured): Kraan S and Barrington KA (2005) Commercial farming of Asparagopsis armata (Bonnemaisoniaceae, Rhodophyta) in Ireland, maintainance of an introduced species? Journal of Applied Phycology 17: 103-110 DeValera M (1942) A red algae new to Ireland: Asparagopsis armata Harv. on the west coast. Irish Naturalists’ Journal 8: 30-34. Brennan AT (1945) Notes on the distribution of certain marine algae on the west coast of Ireland. Irish Naturalists' Journal 8(7): 252-254. Comments: The species is well established on the west coast of Ireland and sufficiently abundant to be cultivated. Locally can be the dominant species. By 1945 it had spread to other localities in Connemara and had become abundant at Mweenish where it was first found by De Valera. It was found to be abundant during the spring and summer. Such is its abundance that the species is now in cultivation in the Galway region and is the only region where the gametophyte stage has been recorded to-date in Irish waters. This stage is generally confined to 'lagoon' type environments. |
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Species status (?) | Non-indigenous species References (not structured): Ní Chualáin, F., Maggs, C.A., Saunders, G. W. & Guiry, M.D. (2004). The invasive genus Asparagopsis (Bonnemaisoniaceae, Rhodophyta): molecular systematics, morphology and ecophysiology of Falkenbergia isolates. Journal of Phycology, 40: 1112-1126. Farnham, W. F. 1994. Introduction of marine benthic algae into Atlantic European waters. In Boudouresque, C. F., Briand, F. & Nolan, C. [Eds.] Introduced Species in European Coastal Waters. European Commission, Luxembourg, pp. 32–6. Comments: This species is endemic to Australia and New Zealand and was introduced to the Atlantic and Mediterranean in the 1920s. |
Created by | Dan Minchin |
Last update by | Dan Minchin, 2013-10-22 |