AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Pachycordyle michaeli | |
Date of the first record (?) | 1964 References (not structured): Wolff WJ (2005) Non-indigenous marine and estuarine species in The Netherlands. Zool Meded Leiden 79:1–116 (and references therein). Comments: listed as Thieliana navis |
Recipient region (?) | Country: Netherlands LME: 22. North Sea References (not structured): Wolff WJ (2005) Non-indigenous marine and estuarine species in The Netherlands. Zool Meded Leiden 79:1–116 (and references therein). Comments: Gat van Ouwerkerk near the Oosterschelde estuary. Status in The Netherlands: Exotic non-indigenous species (criteria 1, 3, 11), permanently established. Vector: Unknown. Area of origin: Faasse & Vervoort (2001) suggest that this might be a Ponto-Caspian species, although so far it has been found only in South Africa, the Baltic, England, and The Netherlands. However, Cordylophora inkermanica Marfenin, 1983, from the Black Sea may be the same species. Introduction into Atlantic Europe: The first observation is from the mouth of the Nordsee-Ostsee Kanal in the Kieler Förde in Germany in 1960 (Thiel, 1962). Introduction into The Netherlands: Faasse & Vervoort (2001) show that this species was observed for the first time in the non-tidal Gat van Ouwerkerk near the Oosterschelde estuary in 1964. Present occurrence in The Netherlands: The species has not been found again in the Gat van Ouwerkerk. In 2000 and 2001, however, it was observed in the Goesse Meer and in 2001 (and perhaps in 1999) in the Westkapelse Kreek. In contrast to Cordylophora and Garveia, which can be classified as freshwater-oligohaline and mesohaline species, respectively, Thieliana seems to be a polyhaline species (Faasse & Vervoort, 2001). |
|
Source region (?) | Not entered |
Pathway / Vector (?) | Level of certainty: Highly likely Pathway: Natural spread from neighboring countries Vector: (Highly likely) Water currents References (not structured): Gittenberger A, Rensing M, Wesdorp KH. 2017. Non-indigenous marine species in the Netherlands. Report Nr. GiMaRIS 2017_13. The Department of Nature & Biodiversity of the Ministry of Agriculture, Nature and Food Quality & the Office for Risk Assessment and Research of the Netherlands Food and Consumer Product Safety Authority. 39 pp. Comments: Old formated values: Pathway - unknown; Vector - unintentional |
Habitat type (?) | Not entered | |
Wave exposure (?) | Not entered | |
Salinity range (?) | Venice system: 6. Polymixohaline [18-30psu] References (not structured): Wolff WJ (2005) Non-indigenous marine and estuarine species in The Netherlands. Zool Meded Leiden 79:1–116 (and references therein). |
|
Temperature range (?) | Not entered |
Zonation / Substratum (?) | Not entered | |
Reproductive duration (?) | Not entered | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Established (Low level of certainty) References (not structured): Wolff, W.J. (2005): Non-indigenous marine and estuarine species in the Netherlands. Zoolog. Meded. 79: 1-116 and references therein |
|
Species status (?) | Non-indigenous species References (not structured): Faasse and Vervoort 2001 Wolff WJ (2005) Non-indigenous marine and estuarine species in The Netherlands. Zool Meded Leiden 79:1–116 (and references therein). Comments: ´= Thieliana navis |
Created by | Stephan Gollasch |
Last update by | Stephan Gollasch, 2020-05-06 |