Alien freshwater polychaetesHypania invalida(Grube 1860) andLaonome calidaCapa 2007 in the Upper Odra River (Baltic Sea catchment area)

Abstract

-Two polychaete species, Hypania invalida and Laonome calida, were found in the Upper Odra River in 2016. Both species were recorded close to a natural river bank down to 1 m depths. They inhabited sandy-gravelly and sandy-muddy sediments.

Distribution of the invasive polychaete Hypania invalida (Grube, 1860) against the background of the benthic fauna in the upper Oder River catchment (Poland)

“…Our research has revealed the upstream dispersion of H. invalida along the Oder River and to the initial section of the Gliwice Canal. Previous research identified its presence at 108 km in the Oder (Pabis et al, 2017). Two years later, we detected this polychaete at 95.3 km, confirming its potential to move upstream.…”

“…To date in Poland, H. invalida has only been recorded in the Oder River. It has been found in the estuary area (Wozniczka et al, 2011) and the upper reaches of the river (Pabis et al, 2017). Taking the above findings into account, the aims of our research were: (1) to map the distribution of H. invalida in the upper Oder and associated aquatic environments, (2) to assess the contribution of H. invalida to the benthic fauna, (3) to identify environmental factors linked to the occurrence of H. invalida, (4) to provide genetic markers that can be used to identify H. invalida and monitor its dispersal.…”

“…The Danube River catchment has played a crucial role in the dispersion of H. invalida (Pavel et al, 2021), allowing its colonization in numerous river systems across Western and Central Europe. The species has settled in the Rhine, the Main (Schmidt et al, 1998;Tittizer et al, 2000), the Elbe, the Havel, the Moselle (Tittizer et al, 2000;Eggers and Anlauf, 2008;Straka et al, 2015;Müller et al, 2018), the Meuse (Vanden Bossche et al, 2001;Vanden Bossche, 2002), the Seine, the Marne, the Rhone (Devin et al, 2006;Bij de Vaate et al, 2007;Besacier-Monbertrand et al, 2014), the Sava (Zorić et al, 2011;Vučković et al, 2021), the Drava (Vučković et al, 2021), the Tisa (Ferencz, 1969;Szító, 1996;Zorić et al, 2011), and the Oder rivers (Wozniczka et al, 2011;Pabis et al, 2017). It has also been found in various canals linking river systems (Tittizer et al, 2000;Müller et al, 2006).…”

Further dispersion of the invasive alien species Corbicula fluminea (O. F. Müller, 1774) in the Oder River

“…Its estuary is considered to be one of the most exposed environments for the introduction of alien species in the Baltic Sea catchment. As the main harbour, it plays an important role in both marine and inland shipping and is regarded as a significant gateway for the dispersal of nonindigenous species (Gruszka, 1999;Bij de Vaate et al, 2002;Galil et al, 2008;Gruszka and Woźniczka, 2008;Leuven et al, 2009;Gruszka et al, 2013;Pabis et al, 2017). The number of alien macroinvertebrate species in the Oder River is still growing.…”

Impact of secondary salinisation on the structure and diversity of oligochaete communities

“…It is worth adding that the increasing salinity of aquatic environments contributes to the spread of non-native annelid species. For example, Halabowski et al (2019) observed the presence of the Asian oligochaete species Monopylephorus limosus (Hatai, 1898) in the Bolina River (the Upper Silesian Coal Basin, Poland), which is highly contaminated with saline water associated with underground mining, and Pabis et al (2017) reported the occurrence of the alien polychaete species Laonome calida Capa, 2007 (now considered to be a new species L. xeprovala Bick & Bastrop (Bick et al, 2018)), and Hypania invalida (Grube, 1860) in the brackish waters of the Odra River.…”