Ábrahám Levente (szerk.): Válogatott tanulmányok X. - Natura Somogyiensis 25. (Kaposvár, 2014)
Cozma N. J. - Juhász P. - Müller Z. - Olajos P. - Kiss B.: The true bug (Heteroptera: Nepomorpha, Gerromorpha) fauna of some soda pans and sodic water bodies of Great Hungarian Plain
Natura Somogyiensis 25 41-50 Kaposvár, 2014 The true bug (Heteroptera: Nepomorpha, Gerromorpha) fauna of some soda pans and sodic water bodies of Great Hungarian Plain 'Nastasia J. Cozma, 2Péter Juhász, 2Zoltán Müller, 3Péter Olajos & 2Béla Kiss 1 Department of Ecology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary, email: cozma.nastasia@gmail.com 2BioAqua Pro Ltd., Soó Rezső utca 21, H-4032 Debrecen, Hungary, email: Kiss.Bela@bioaquapro.hu 3Hortobágy National Park, Sumen utca 1, H-4023 Debrecen, Hungary, email: olaj@hnp.hu Cozma N. J., Juhász P., Müller Z., Olajos P. & Kiss B: The true bug (Heteroptera: Nepomorpha, Gerromorpha) fauna of some soda pans and sodic water bodies of Great Hungarian Plain. Abstract: Between 1997 and 2010, altogether 26 aquatic and semiaquatic bug species were collected at 29 localities in Hungary. The collected species belonged to 9 families (Nepidae: 2 species, Corixidae:ll, Naucoridae: 1, Notonectidae: 2, Pleidae: 1, Mesoveliidae: 1, Hydrometridae: 1, Veliidae: 1 and Gerridae: 6). This paper presents 233 records of occurrences. The most wide-spread 6 species in the natural or semi-natural soda pans were Sigara lateralis, Paracorixa concinna, Cymatia rogenhoferi, Sigara striata, Corixa affinis and Gerris odontogaster. Keywords: water bugs, faunistical investigation, alkaline water, saline water, Hungary Introduction The number of sodic aquatic habitats decreased drastically mainly due to climatic changes and former human disturbance, primarily drainage, flood control, and irrigation (Boros and Bíró 1999). The registration of the "ex lege" protected soda pans and sodic waters was carried out between 1998 and 2005, with the mapping of sodic water bodies covering 2342 ha, without the Lake Fertő and Lake Velencei (Boros et al. 2006). In Hungary, 317 existing soda pans and sodic waters have been registered until 2002 (20 365 hectar) (Magyar Közlöny 2009) but the number of natural and semi-natural soda pans is less than hundred in the Carpathian Basin (Horváth et al. 2013). Considering different geological, botanical, zoological aspects of these habitats, they are unique in our country. The biota is dominated by ubiquist species which have an extended tolerance towards salinity and pH (euryhydrion), with some other species which are either specialised for sodic water (natronophil) or are alkaline-tolerant (alkalinophil) (Horváth et al. 2014). The composition of the aquatic macroscopic invertebrate fauna was investigated by many researchers. The zoobenthos was studied by Andrikovics (2001), Andrikovics and Murányi (2003), Ferencz (1965, 1967, 1970, 1973) and Megyeri (1979). Leeches of the soda lakes were investigated by Győrffy (1931) and Stiller (1942), while
