AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Cordylophora caspia [WoRMS] | |
Authority | (Pallas, 1771) | |
Family | Cordylophoridae | |
Order | Anthoathecata | |
Class | Hydrozoa | |
Phylum | Cnidaria | |
Synonym (?) | Bimeria baltica (Stechow, 1927) Cordylophora albicola (Kirchenpauer in Busk, 1861) Cordylophora americana (Leidy, 1870) |
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Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: Ponto-caspian |
Life form / Life stage (?) |
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Sociability / Life stage (?) |
References (not structured): Arndt EA (1984) The ecological niche of Cordylophora caspia (Pallas, 1771). Limnologica 15: 469-477 Fulton C (1961) The development of Cordylophora. In: Lenholf HM & Loomis WF (eds) The biology of Hydra and some other coelenterates. University of Miami Press, Miami Florida, pp 287-295 Gili J-M, Hughes RG (1995) The ecology of marine benthic hydroids. Oceanography and Marine Biology: an Annual Review 33: 351-426 Comments: This colonial hydroid (up to 10 cm high) light brown in colour occurs in brackish waters, branching occasionally from alternate sides. Branches are ringed at the base and have terminal polyps with colourless, extensile tentacles that are 12-16 long. Polyps not surrounded by bell-shaped, transparent hydrotheca as in Laomedea-species. Cordylophora caspia is preyed upon by an nudibranch (Tenellia adspersa) (Mills and Sommer 1995). |
Reproductive frequency (?) | Not known |
Reproductive type (?) | Asexual Sexual References: Arndt EA (1984) The ecological niche of Cordylophora caspia (Pallas, 1771). Limnologica 15: 469-477 Fulton C (1961) The development of Cordylophora. In: Lenholf HM & Loomis WF (eds) The biology of Hydra and some other coelenterates. University of Miami Press, Miami Florida, pp 287-295 Gili J-M, Hughes RG (1995) The ecology of marine benthic hydroids. Oceanography and Marine Biology: an Annual Review 33: 351-426 Comments: During sexual reproduction, ova are retained in female gonophores. Male gonophores release sperm that fertilize the eggs in female gonophores. Female gonophores then release planula larvae to find suitable substrate; these larvae grow into new colonies of C. caspia (Seyer et al. 2017; Pucherelli et al. 2016). Hydroids may reproduce asexually by budding to from another colony. A common form of asexual reproduction in hydroids is the formation of vertical stolons, which then adhere to adjacent substratum, detach and form another colony. |
Developmental trait (?) | Unknown |
Characteristic feeding method / Life stage (?) |
References (not structured): Arndt EA (1984) The ecological niche of Cordylophora caspia (Pallas, 1771). Limnologica 15: 469-477 Fulton C (1961) The development of Cordylophora. In: Lenholf HM & Loomis WF (eds) The biology of Hydra and some other coelenterates. University of Miami Press, Miami Florida, pp 287-295 Gili J-M, Hughes RG (1995) The ecology of marine benthic hydroids. Oceanography and Marine Biology: an Annual Review 33: 351-426 Comments: Feeds on small planktonic organisms.Capturing prey using nematocysts. Diet includes small crustaceans, worms, insect larvae, watermites and other zooplankton and benthic invertebrates (Pucherelli et al., 2016). |
Mobility / Life stage (?) |
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Salinity tolerance range (?) | Exact range: 0.5 - 8.8 References: Olenin, S., & Daunys, D. (2004). Coastal typology based on benthic biotope and community data: the Lithuanian case study. Coastline Reports, 4, 65-84. References: Arndt EA (1965) Uber die Fauna des sekundaren Hartbodens der Martwa Wisla und ihres MUndungsgebietes (Danziger Bucht). - Wiss. Zeitschr. Univ. Rostock 14. Mat.-Naturwiss. Rei he 5/6: 645-653 Jarvekiulg A (1979) The bottom fauna of the eastern part of the Baltic Sea. Tallinn, Valgus: 382. (in Russian) Leppakoski E, Olenin S (2000) Non-native species and rates of spread: lessons from the brackish Baltic Sea. Biological Invasions, 2: 151-163 |
Habitat modifying ability potential (?) | Keystone species References: Arndt E.A. (1984). The ecological niche of Cordylophora caspia (Pallas, 1771). Limnologica 15: 469-477. Fulton C (1961) The development of Cordylophora. In: Lenholf HM & Loomis WF (eds) The biology of Hydra and some other coelenterates. University of Miami Press, Miami Florida, pp 287-295. Gili J-M, Hughes RG (1995) The ecology of marine benthic hydroids. Oceanography and Marine Biology: an Annual Review 33: 351-426. Pucherelli, S. F.; Keele, J.; Passamaneck, Y. J.; Beaver, J. R.; Renicker, T. R.(2016). Range expansion of the invasive hydroid, Cordylophora caspia (Pallas, 1771), in Colorado River reservoirs. BioInvasions Records 5(3): 133-137. Comments: Competes with native species for space and food. The large dense colonies of the hydroids essentially modify benthic habitats causing structural changes in pelagic and benthic communities. Benthic predator, capturing prey using nematocysts: their diet includes small crustaceans, worms, insect larvae, watermites and other zooplankton and benthic invertebrates (Pucherelli et al., 2016). Their diet puts them in competition with many species of larval, juvenile, and benthivorous fish (Seyer et al., 2017). They also compete with other benthic species for substrate; however, their filamentous structure may also provide substrate for chironomids, caddisflies and Dreissena spp. veligers (Folino-Rorem, 2015). |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Anthropogenic chemical compounds References: Ringelband, U., Karbe, L. 1996. Effects of vanadium on population growth and Na-K-ATPase activity of the brackish water hydroid Cordylophora caspia. Bulletin of environmental contamination and toxicology, 57(1), pp. 118-124 |
Known human health impact? | Not known |
Known economic impact? | Known References: Folino-Rorem, N. C., Indelicato, J. 2005. Controlling biofouling caused by the colonial hydroid Cordylophora caspia. Water Research, 39(12), pp. 2731-2737. Comments: Cordylophora colonizes intake culverts and chambers in Europe and the United States and was found clogging intake tunnels as well as filters and condenser tube sheets at the Collins Station. |
Known measurable environmental impact? | Known References: Folino-Rorem, N. C., Indelicato, J. 2005. Controlling biofouling caused by the colonial hydroid Cordylophora caspia. Water Research, 39(12), pp. 2731-2737. Comments: In freshwater systems, Cordylophora caspia colonizes rocks, plant stalks, and bivalve shells including zebra mussels. |
Included in the Target Species list? | No References: HELCOM, 2009. Alien Species and Ballast Water [PDF]. Available at: (https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf) |
Association with vessel vectors (?) | Biofouling References: Seyer T., Pedro M., Leitão F., Martins F., Teodósio MA. (2017). On the presence of the Ponto-Caspian hydrozoan Cordylophora caspia (Pallas, 1771) in an Iberian estuary: highlights on the introduction vectors and invasion routes. BioInvasions Records 6(4):331-337. |
Last update by | Sandra Gečaitė, 2024-07-09 |