AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Mnemiopsis leidyi | |
Date of the first record (?) | 2006 References (not structured): Hansson H.G., 2006. Ctenophores of the Baltic and adjacent Seas – the invader Mnemiopsis is here! Aquatic Invasions 1(4): 295–298 Gorokhova, E., Lehtiniemi M., Viitasalo-Frösen, S. and Haddock, S. H. D. 2009. Molecular evidence for the occurrence of ctenophore Mertensia ovum in the Northern Baltic Sea and implications for the status of Mnemiopsis leidyi invasion. Limnol. Oceanogr. 54 (6): 2025-2033 Comments: M. leydi was first believed to be widespread in the Baltic Sea but in 2008 molecular studies revelead that it was a native species (Mertensia ovum) in the central and northern part of the Baltic Sea. Hence M. leydi is only found in souther Baltic Sea and Kattegatt/Skagerrak. |
Recipient region (?) | Country: Sweden LME: 23. Baltic Sea |
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Source region (?) | Unknown References (not structured): Hansson 2006 Comments: Introduced by ballast water either from America or Black Sea region. Another possibility is by water currents from Germany/Denmark |
Pathway / Vector (?) | Level of certainty: Possible Pathway: Natural spread from neighboring countries Vector: Water currents Pathway: Vessels Vector: Ballast water References (not structured): Hansson 2006 Didžiulis, V. (2013): NOBANIS – Invasive Alien Species Fact Sheet – Mnemiopsis leidyi. – From: Online Database of the European Network on Invasive Alien Species – NOBANIS www.nobanis.org, Date of access 19/10x/2015 |
Habitat type (?) | Open coast Sheltered coastal area References (not structured): Hansson 2006 |
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Wave exposure (?) | Not entered | |
Salinity range (?) | Not entered | |
Temperature range (?) | Not entered |
Zonation / Substratum (?) | Pelagic: Littoral (Pelagic) Neritic |
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Reproductive duration (?) | Not entered | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Common (Moderate level of certainty) | |
Species status (?) | Non-indigenous species |
Created by | Sergej Olenin |
Last update by | Ann-Britt Florin, 2015-10-19 |