Unionidaepl (202K)
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Unionidae w Polsce:Gatunki w Polsce

Species
Sinanodonta woodiana

Historical and present distribution
Invasive alien species. It was brought to Poland most likely from Hungary in the mid 1980s, with the fry of Asian herbivorous fish. It has inhabited the system of heated lakes and canals built at Konin power station. In 2002 new site was found in Wielkopolska voivodeship. In 2004 the presence of S. woodiana was noted in a cooling water discharge canal of the "Dolna Odra" power station in Nowy Czarnów. The species distribution still expands in Poland. Recently, it was noted in Śląsk and in new sites in Wielkopolska (Spyra et. al. 2012), in the upper course of Vistula river (Najberek et. al. 2010 (fish ponds), Zając unpubl. (old river bed) and in Podkarpacie region (Wojton et al. 2012, Zając unpubl.). It is worth of noticing that some of those localities are in natural waters, which are not warmed, which is contrary to common expectations, that this species reproduce only in temperature 10-35oC.

Conservation Status
Unprotected in Poland. Invasive alien species

General biology and life history traits
Growth:in warmed waters – 125-160mm, max. 200.
Lifespan:9 years (max recorded), 70% of population in Konin between 2-5 years
Age of maturity : 2 years. Shell length ca 3-4 cm.
Reproductive cycle : parasitic period in Konin lakes lasts 4-9 days
Larvae release W klimacie umiarkowanym larwy w planktonie stwierdzane są zwykle od maja do początku września, ale w wodach podgrzanych - dłużej, od marca-kwietnia (Stańczykowska, Lewandowski 2012)
Known hosts: In a natural site where Sw was found, Hypophthalamichthys molitrix (Valenciennes, 1844) is regularly introduced. In other antropogenic sites all species regarded as hosts were recorded.
Major threats: unknown in Poland
Conservation and management measures being applied or to be applied in the near future: Although not protected, it is also not eliminated. In warm waters it can reach significant quantities (Konin) thus it can be a important competitor for native species.

References
Kraszewski A. 2007. The continuing expansion of Sinanodonta woodiana (Lea, 1834) (Bivalvia: Unionidae) in Poland and Europe, Folia Malacologica 15: 65-69.
Ożgo M., Bogucki Z., Janulis E. 2010. Sinanodonta woodiana in a natural water body in the buffer zone of the Słowiński National Park, In: Pokryszko B. (ed.) The 26th Polish Malacological Seminar, Folia Malacologica 18:123-145.
Wojton A., Kasprzyk I., Kościółek P., Pilch K., 2012. The occurence of the protected Swan mussel Anodonta cygnea (Linnaeus, 1758) and the invasive alien Chinese mussel Sinanodonta woodiana (lea, 1834) in the fish ponds in the Wisłok river basin (SE Poland), Folia Malacologica 20: 135-138.
Zajac T., Bielanski W., Ciszewski D., Florek J., Gołąb MJ, Guzik M., Koczur A., Korzeniak J., Lipińska A., Myszka R., Najberek K., Pociecha A., Potoczek M., Walusiak E., Wilk-Woźniak E., Szczęsny B., Zając K. 2013. The analysis of favorite conservation status of old river beds system “Wiśliska” – Natura 2000 site PLH 120084, Chrońmy Przyrodę Ojczystą v. 69 (2), in press.