Freshwater Hydroid

The freshwater hydroid Cordylophora caspia occurs in both fresh and brackish water. The hydroid naturally occurs around the Caspian and Black Sea. By attaching itself to ship hulls and/or floating material (e.g. plant debris) this polyp has spread to the brackish waters of Western Europe through rivers and channels. The first European report was along the Swedish coast in 1814. This coelenterate was observed in Belgium for the first time in 1905, in Nieuwpoort.

De brakwaterpoliep Cordylophora caspia is een organisme van het zoete én het brakke water. Het oorspronkelijke areaal van de brakwaterpoliep ligt rond de Kaspische Zee en de Zwarte Zee. Door zich vast te hechten aan scheepsrompen en/of aan drijvend materiaal (vb. plantenresten) heeft deze poliep via rivieren en kanalen de brakke wateren van West-Europa bereikt. De eerste Europese waarneming gebeurde langs de Zweedse kust in 1814. Dit neteldier werd voor de eerste keer waargenomen in België in 1905, in Nieuwpoort.

colonial

Prince Edward Island (from the northern tip of Miscou Island, N.B. to Cape Breton Island south of Cheticamp, including the Northumberland Strait and Georges Bay to the Canso Strait causeway), southern Gaspe waters (Baie des Chaleurs, Gaspe Bay to American, Orphan and Bradelle banks; eastern boundary: Eastern Bradelle Valley), Middle North shore (from Sept- Iles to Cape Whittle, including the Mingan Islands), Western slope of Newfoundland , including the southern part of the Strait of Belle Isle but excluding the upper 50 m in the area southwest of Newfoundland

infralittoral of the Gulf and estuary

Temperature 16°C, 11.5 PSU (brackish).