Planorbarius corneus ( Linnaeus, 1758 )

Marković, Vanja, Gojšina, Vukašin, Novaković, Boris, Božanić, Milenka, Stojanović, Katarina, Karan-Žnidaršič, Tamara & Živić, Ivana, 2021, The freshwater molluscs of Serbia: Annotated checklist with remarks on distribution and protection status, Zootaxa 5003 (1), pp. 1-64 : 28

52. Planorbarius corneus ( Linnaeus, 1758)

Findings in Serbia.

Planorbarius corneus : Hesse (1929); Jaeckel et al. (1958); Frank et al. (1990); Jovanović (1990, 1995 a, 1998); Arambašić (1994); Reh et al. (1997); Karaman (2001, 2001 a); Karaman & Živić (2001); Živić et al. (2005, 2006); Karaman & Karaman (2007); Savić et al. (2016); Stojanović (2017); Živić (2020); Gojšina (2021 pers. comm.).

Common name. Great ramshorn.

Morphology. Large snails up to 35 mm diameter. Shell is flattened and thick, weakly striated. It consists of 4.5–5 fast increasing whorls. For more details see Glöer (2019: 265, fig. 331).

Distribution and ecology. Holarctic species up to 750 m. a.s.l. (in Serbia up to 600 m. a.s.l.). Lives in standing and slow-flowing waters with a muddy substrate, and plenty of vegetation ( Welter-Schultes 2012). Quite common in Serbia this species has been found in Kraljevac Lake, Obedska bara and Carska bara Wetlands, Danube, Tamiš, Sava, Nišava, Visočica, Toplica Rivers, and few other rivers from the southern part of Serbia.

Other remarks. Due to self-fertilization it has a quite high spreading potential, sometimes only one snail can form stable populations in new habitats ( Welter-Schultes 2012). On the IUCN Red List it has been assessed as LC ( Albrecht et al. 2010).