Growth Rates of Roach (Rutilus rutilus (L)) in a Cooling Water Reservoir under Different Thermal Conditions
✍ Scribed by G. Balkuvienė; B. Pernaravičiūté
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 192 KB
- Volume
- 79
- Category
- Article
- ISSN
- 1434-2944
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✦ Synopsis
Thermal emuent from the nuclear power plant o n Lake DriikSiai in Lituania has had a major impact on fish population and other aquatic biota ofthis lake. In 1984, Lake DrGkSiai was transformed into a cooling water reservoir of the Ignalina Nuclear Power Plant (INPP). The greatest impact of elevated water temperatures was on the fish species composition. Roach (Rurilus rutilus) adapted itself best to water temperatures averaging in summer month 3OoC, and it grew faster, while other species became much less common. The mollusc Dreissena polymorpha Pall. became an important source of food for roach. When the long-term temperature exceeded 3OoC, the rate of growth of roach slowed down.