Ecosystem Transformation (), 172-180

The effect of osmotic shock on fouling bryozoans at the Balakovo Nuclear Power Plant in the experiment

Mukhin I.A. , Voronin M.Yu., Vinogradov A.Yu., Ryazanov S.V.

Bryozoan fouling is a problem for the functioning of the technical water supply systems of the Balakovo Nuclear Power Plant. The effect of osmotic shock on bryozoan mortality was assessed in two consecutive experiments. Fredericella sultana and Paludicella articulata colonized metal plates installed into the observation water-filled chambers connected to the industrial water supply. The use of an osmotic solution may be a less hazardous alternative to biocides used to combat bryozoan fouling. The plates were set into the chambers 20 days before the first experiment and 32 days before the second one. Exposure to a NaCl solution (3 g/L) for 5 minutes had no negative effect on the bryozoans. Exposure to a higher concentration of NaCl (7 g/L) for 15 minutes significantly reduced the number of living colonies compared to the control. The osmotic shock may help clearing water equipment from fouling bryozoans.

I. A. Mukhin
Russian State Hydrometeorological University
Voronezhskaya St. 79, St. Petersburg, 192007 Russia

periphyton35@gmail.com

M. Yu. Voronin
Saratov National Research State University named after N.G. Chernyshevsky
Astrakhanskaya St. 83, Saratov ,410012 Russia


A. Yu. Vinogradov
LLC "NPO Gidrotekhproekt"
Oktyabrskaya St. 55a-7, Valdai, Novgorod Oblast, 175400 Russia


S. V. Ryazanov
Balakovo Nuclear Power Plant, JSC "Rosenergoatom Concern"
Balakovo, Saratov Oblast, 413801 Russia

Dietz, T., Wilcox, S., Byrne, R., Lynn, J., Silverman, H., 1996. Osmotic and ionic regulation of north american Zebra Mussels (Dreissena polymorpha). Integrative and Comparative Biology 36 (3), 364–372. https://doi.org/10.1093/icb/36.3.364
Gontar’, V.I., 2016. Mshanki [Bryozoa]. In: Alekseev, V.R., Tsalolikhin, S.Ya. (eds.), Opredelitel’ zooplanktona i zoobentosa presnykh vod Evropeiskoi Rossii. Tom 2. Zoobentos [Guide to zooplankton and zoobenthos of fresh waters of European Russia. Vol. 2. Zoobenthos]. KMK Scientific Press Ltd, Moscow – St. Petersburg, Russia, 153–163. (In Russian).
Gosling, E., 2003. Bivalve molluscs: biology, ecology and culture. Fishing New Books, Blackwell Publishing, Berlin, Germany, 456 р. https://doi.org/10.1002/9780470995532
Jørgensen, F., Stephens, P., Knøchel, S., 1995. The effect of osmotic shock and subsequent adaptation on the thermotolerance and cell morphology of Listeria monocytogenes. Journal of Applied Bacteriology 79 (3), 274–281. https://doi.org/10.1111/j.1365-2672.1995.tb03137.x
zKhlebovich, V.V., 1974. Kriticheskaya solenost' biologicheskih processov [Critical solenometry of biological processes]. Nauka, Leningrad, USSR, 235 p. (In Russian).
Khlebovich, V.V., 2013. Kriticheskaya solenost' – gomeostaz – ustojchivoe razvitie [Critical salinity – homeostasis – sustainable development]. Trudy Zoologicheskogo instituta RAN [Proceedings of the Zoological Institute of the Russian Academy of Sciences] 317 (S3), 3–6. (In Russian).
Kochneva, A.A., Smirnov, L.P., Efremov, D.A., Sukhovskaya, I.V., 2023. Vliyaniye osmoticheskogo stressa na kontsentratsiyu belka i aktivnost' antioksidantnykh fermentov v organizme devyatiigloy kolyushki Pungitius pungitius (Gasterosteidae) basseyna Belogo morya [The effect of osmotic stress on protein concentration and antioxidant enzyme activity in the body of nine-spined stickleback Pungitius pungitius (Gasterosteidae) of the White Sea basin]. Trudy Zoologicheskogo instituta RAN [Proceedings of the Zoological Institute of the Russian Academy of Sciences] 327 (1), 98–108. (In Russian). https://doi.org/10.31610/trudyzin/2023.327.1.98
Mukhin, I.A., Voronin, M.Yu., Ryazanov, S.V., 2023. Mshankovyye obrastaniya v sisteme tekhnicheskogo vodosnabzheniya BALAES [Bryozoan fouling in the technical water supply system of the BalNPP]. Tezisy dokladov VI Mezhdunarodnoy (XIX Regional'noy) nauchnoy konferentsii “Tekhnogennyye sistemy i ekologicheskiy risk” [Abstracts of the VI International (XIX Regional) scientific conference “Abstracts of the VI International (XIX Regional) scientific conference”], Obninsk, 20–21.04.2023. Obninsk, Russia, 253–254. (In Russian).
Ram, J.L., Shukla, V., King, K.N., 2004. Zebra mussels at the freshwater/sea interface: Ionic and osmotic challenges to oocyte integrity. Invertebrate Reproduction & Development 45 (1), 83–89. https://doi.org/10.2307/1542149
Smurov, A.O., Podlipaeva, Yu.I., Skarlato, S.O., Goodkov, A.V., 2010. Sviaz' mezhdu stepen'iu soleustoichivosti infuzorii i konstitutivnym urovnem soderzhaniia Hsp70 v kletkakh [Correlations between salinity-persistence of ciliates species and their constitutive heat shock protein 70 kDa contents]. Tsitologiya [Cytology] 52 (12), 1041–1044. (In Russian).