Thermoadaptation Characteristics of European River Lamprey Lampetra fluviatilis Smolts
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Thermoadaptation characteristics of smolts of European river lamprey Lampetra fluviatilis are studied in experimental conditions for the first time. The final preferred temperature in the smolts preliminary acclimated to water temperature of 9 is 15.3°С. The value of sublethal temperature determined by the method of critical thermal maximum at a 9°С/h temperature increase rate is 29.0°С, while that of the upper lethal temperature is 30.8°С. The values of the final selected and upper lethal temperatures in river lamprey smolts are close to those in salmonids and coregonids.
Keywords:European river lamprey Lampetra fluviatilis smolts preferred temperature final preferred temperature thermal tolerance upper lethal temperature critical thermal maximum
The study was carried out within the framework of state task no. АААА-А18-118012690102-9 with the support of the Russian Science Foundation (project no. 14-14-01171-P, filed studies and sampling of lamprey smolts), the program of the President of the Russian Federation “Leading Science Schools” NSh-7894.2016.4 “Ecological Aspects of Adaptations and Population Organization in Fish” (experimental studies), as well as at the partial support of the Presidium of the Russian Academy of Sciences, project 0122-2018-0001.
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