Preferred Temperature and Thermal Resistance of the Lake Minnow Rhynchocypris Percnurus (Pallas, 1814)

The thermoadaptive characteristics of the lake minnow Rhynchocypris percnurus (Pallas, 1814) have been obtained for the first time in experimental conditions. The final preferred temperature in adult fish previously acclimated to a water temperature of 15°С is ~23°С. The sublethal temperature, as de...

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Bibliographic Details
Published in:Inland water biology 2020-04, Vol.13 (2), p.273-278
Main Authors: Smirnov, A. K., Golovanov, V. K., Golovanova, I. L., Artaev, O. N.
Format: Article
Language:English
Subjects:
Biodiversity
Biomedical and Life Sciences
Fingerlings
Fish
Freshwater & Marine Ecology
Freshwater fishes
Geoecology/Natural Processes
Heating rate
Ichthyology
Lakes
Life Sciences
Temperature preferences
Thermal resistance
Water heating
Water temperature
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Summary:The thermoadaptive characteristics of the lake minnow Rhynchocypris percnurus (Pallas, 1814) have been obtained for the first time in experimental conditions. The final preferred temperature in adult fish previously acclimated to a water temperature of 15°С is ~23°С. The sublethal temperature, as determined by a critical thermal maximum at a water heating rate of 8°C/h, in fingerlings and adult fish is 31.6–31.9°C and the upper lethal temperature is 33.5–33.8°C. Established thermoadaptation characteristics of the lake minnow are higher than those compared to the common minnow P. phoxinus (L.), which may be due to the difference in the ecology of these species.
ISSN:1995-0829
1995-0837
DOI:10.1134/S199508292002011X