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Physiological and Biochemical Parameters of Fingerlings of Native Carassius auratus gibelio (Bloch, 1792) and Invasive Perccottus glenii (Dybowski, 1877) Species of Fish in the Floodplain Lake Krugloye (Saratov Reservoir)

  • ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS
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Abstract

Using the example of Lake Krugloye (Mordovinskaya floodplain in the Saratov Reservoir), the changes in the physiological and biochemical parameters in two abundant fish species inhabiting the same biotopes have been comparatively analyzed. The fish under study are the aboriginal crucian carp (Carassius auratus gibelio) (Bloch, 1792) and the invasive Amur sleeper (Perccottus glenii) (Dybowski, 1877). The study reveals differences between the species in the patterns of the dynamics of body weight and contents of protein, fat, water, and caloric contents upon an increase in body length during various months of the active feeding period. Potential reasons for the differences and their consequences are discussed.

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ACKNOWLEDGMENTS

The present study was carried out as part of State Task no. AAAA-A18-118012690123-4.

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Correspondence to E. V. Shemonaev.

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Conflict of interests. The authors declare that they have no conflict of interest.

Statement on the welfare of animals. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Translated by D. Pavlov

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Khalko, V.V., Shemonaev, E.V., Kirilenko, E.V. et al. Physiological and Biochemical Parameters of Fingerlings of Native Carassius auratus gibelio (Bloch, 1792) and Invasive Perccottus glenii (Dybowski, 1877) Species of Fish in the Floodplain Lake Krugloye (Saratov Reservoir). Inland Water Biol 12, 109–114 (2019). https://doi.org/10.1134/S1995082919010127

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