AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Potamothrix moldaviensis [WoRMS] | |
Authority | (Vejdovský & Mrázek, 1903) | |
Family | Naididae | |
Order | Haplotaxida | |
Class | Clitellata | |
Phylum | Annelida | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: Ponto-Caspian region. |
Life form / Life stage (?) |
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Sociability / Life stage (?) |
References (not structured): Milbrink, G., Timm, T. 2001. Distribution and dispersal capacity of the Ponto-Caspian tubificid oligochaete Potamothrix moldaviensis Vejdovský et Mrázek, 1903 in the Baltic Sea Region. Hydrobiologia, 463, pp. 93-102. |
Reproductive frequency (?) | Not entered |
Reproductive type (?) | Asexual Sexual References: Timm, T. 2013. The genus Potamothrix (Annelida, Oligochaeta, Tubificidae): a literature review. Estonian Journal of Ecology, 62(2), 121. Comments: P. moldaviensis can reproduce asexually through a process called fragmentation. otamothrix moldaviensis is a hermaphroditic species, meaning that each individual possesses both male and female reproductive organs. After fertilization, the worm produces a cocoon, within which the fertilized eggs are deposited. The cocoon is then released into the sediment, where the eggs develop into juvenile worms. |
Developmental trait (?) | Lecithotrophy References: Kipp, R.M., J. Larson, A. Fusaro, and T. Makled, 2024, Potamothrix moldaviensis Vejdovsky and Mrazek, 1902: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, and NOAA Great Lakes Aquatic Nonindigenous Species Information System, Ann Arbor, MI, https://nas.er.usgs.gov/queries/GreatLakes/FactSheet.aspx?Species_ID=2705, Revision Date: 9/12/2019, Access Date: 8/22/2024 Comments: P. moldaviensis reproduces by making pear-shaped cocoons covered in sediment particles that adhere to hard substrates. One study found that at 10ºC Potamothrix moldaviensis spends around 46 days in cocoons, 300 days as an immature individual after it hatches, and 150 days in the mature stage. At 15ºC the length of time spent in the cocoon decreases to 30 days. |
Characteristic feeding method / Life stage (?) |
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Mobility / Life stage (?) |
References (not structured): Poznańska, M., Werner, D., Jabłońska-Barna, I., Kakareko, T., Ung Duong, K., Dzierżyńska-Białończyk, A., Kobak, J. 2017. The survival and behavioural responses of a near-shore chironomid and oligochaete to declining water levels and sandy substratum drying. Hydrobiologia, 788, pp. 231-244. |
Salinity tolerance range (?) | Venice system: 1. Limnetic [<0.5psu] References: Kipp, R.M., J. Larson, A. Fusaro, and T. Makled, 2024, Potamothrix moldaviensis Vejdovsky and Mrazek, 1902: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, and NOAA Great Lakes Aquatic Nonindigenous Species Information System, Ann Arbor, MI, https://nas.er.usgs.gov/queries/GreatLakes/FactSheet.aspx?Species_ID=2705, Revision Date: 9/12/2019, Access Date: 8/22/2024 Comments: P. moldaviensis is a freshwater oligochaete that can tolerate brief increases in salinity only. |
Habitat modifying ability potential (?) | Unknown Comments: Not available. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Known Comments: Harmless. |
Known economic impact? | Not known Comments: Not available. |
Known measurable environmental impact? | Not known Comments: Not available. |
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 [Accessed 1 July 2024]. |
Association with vessel vectors (?) | Ballast waters References: Milbrink, G., Timm, T. 2001. Distribution and dispersal capacity of the Ponto-Caspian tubificid oligochaete Potamothrix moldaviensis Vejdovský et Mrázek, 1903 in the Baltic Sea Region. Hydrobiologia, 463, pp. 93-102. |
Created by | Aleksas Narščius, 2014-11-03 |
Last update by | Sandra Gečaitė, 2024-08-22 |