| Issue № 2 |
Methods of ecological investigations |
pdf-version |
Some features of using heart rate monitoring of freshwater bivalve mollusсs with a fiber-optical method for ecotoxicological research
| Sharov Andrey | Ph.D., Saint-Petersburg Scientific Research Center of Ecological Safety, Russian Academy of Sciences, St. Petersburg, 197110, Korpusnaya 18, sharov_an@mail.ru |
| Kholodkevich Sergey | Dr.Sci.Tech, Institute of Earth Sciences, Saint-Petersburg State University, Universitetskaya nab., 7-9, Russia, 199034, St.Petersburg, kholodkevich@mail.ru |
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Keywords: freshwater bivalves heart rate mollusсs state Anodonta anatina Unio pictorum Dreissena polymorpha |
Summary: Original fiber-optic noninvasive method for registration and analysis of cardiac rhythm in macrobenthal invertebrates with shells was elaborated in the 1990s. This method is based on infrared light remote registration of the heartbeat change. The aim of this study is to adapt this methodological approach for freshwater bivalves. We estimated heart rate in the three species of freshwater bivalves (Unio pictorum, Anodonta anatine and Dreissena polymorpha) collected from the Neva River estuary. The Spearman rank correlations found significant (p < 0.05) relationships between the heart rate of bivalves, water temperature and shell size. The heart rate of Anodonta correlates positively (R = 0.92, p = 0.00) with water temperature and negatively (R = – 0.90, p = 0.00) with the shell size. The rise of NaCl salt content in water up to 3 g/l was accompanied by the increase of heart rate in bivalves, and concentrations more than 5 g/l resulted in decrease of that. After the addition of 3-8 g/l of NaCl reliable data of heart rate changes were not found at water temperature less than 7 ºC. © Petrozavodsk State University |
Received on: 12 February 2015 Published on: 09 June 2015 | |
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