AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Obesogammarus crassus | |
Date of the first record (?) | 1999 References (not structured): Konopacka A., Jażdżewski K. 2002. Obesogammarus crassus (G.O. Sars, 1894) - one more Ponto-Caspian gammarid species in Polish waters. Fragmenta Faunistica 45, 19-26. |
Recipient region (?) | Country: Poland LME: 23. Baltic Sea |
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Source region (?) | LME: 23. Baltic Sea Comments: The species most likely came from Cooronian Lagoon |
Pathway / Vector (?) | Level of certainty: Possible Pathway: Natural spread from neighboring countries Pathway: Vessels Vector: Ballast water |
Habitat type (?) | Estuary Lagoon Ports References (not structured): Konopacka A., Jażdżewski K., 2002. Obesogammarus crassus (G.O. Sars, 1894) – one more Ponto-Caspian gammarid species in Polish waters. Fragmenta Faunistica 45, 19-26. |
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Wave exposure (?) | Semi exposed Sheltered References (not structured): Konopacka A., Jażdżewski K.,2002. Obesogammarus crassus (G.O. Sars, 1894) – one more Ponto-Caspian gammarid species in Polish waters. Fragmenta Faunistica 45, 19-26. |
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Salinity range (?) | Venice system: 1. Limnetic [<0.5psu] 2. β-Oligohaline [0.5-3psu] 3. α-Oligohaline [3-5psu] 4. β-Mesohaline [5-10psu] References (not structured): Konopacka A., Jażdżewski K.,2002. Obesogammarus crassus (G.O. Sars, 1894) – one more Ponto-Caspian gammarid species in Polish waters. Fragmenta Faunistica 45, 19-26. Dobrzycka-Krahel A., Rzemykowska H., 2010. First records of Ponto-Caspian gammarids in the Gulf of Gdańsk (southern Baltic Sea). Oceanologia 52 (4), 727-735. |
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Temperature range (?) | Not entered |
Zonation / Substratum (?) | Benthic: Littoral (Benthic) Substratum: Hard (cobbles to bedrock) Soft (mud to pebbles) References: Dobrzycka-Krahel A, Kendzierska H, Szaniawska A (2013) Ponto-Caspian gammarids – a new species in the Gulf of Gdańsk (Southern Baltic Sea). J Ecol. Health 17 (3), 110-114. References (not structured): Konopacka A., Jażdżewski K., 2002. Obesogammarus crassus (G.O. Sars, 1894) – one more Ponto-Caspian gammarid species in Polish waters. Fragmenta Faunistica 45, 19-26. |
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Reproductive duration (?) | Not entered | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Common (Moderate level of certainty) References: Dobrzycka-Krahel A, Kendzierska H, Szaniawska A (2013) Ponto-Caspian gammarids – a new species in the Gulf of Gdańsk (Southern Baltic Sea). J Ecol. Health 17 (3), 110-114. |
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Species status (?) | Non-indigenous species |
Ports | Port: Szczecin Date of the first record: 2018 Salinity range (psu): 0.55 - 0.57 Population status: Not entered References: HELCOM & OSPAR (2013) Joint Harmonised Procedure for the Contracting Parties of OSPAR and HELCOM on the granting of exemptions under International Convention for the Control and Management of Ships’ Ballast Water and Sediments, Regulation A-4. Available from: http://jointbwmexemptions.org/ballast_water_RA Comments: In 2018 this species was recorded during port survey according to JHP Helcom/Ospar, but it could occur in port much earlier |
Created by | Sergej Olenin |
Last update by | Monika Normant, 2020-04-18 |