Reproduction of Siberian shrimp Еxopalaemon modestus (Heller) from the Kapchagai reservoir (Republic of Kazakhstan) in aquaculture
https://doi.org/10.29235/1029-8940-2025-70-2-161-168
Abstract
The reproductive indicators of the Siberian shrimp Exopalaemon modestus (Heller) from the Kapchagay reservoir (Republic of Kazakhstan) were studied: the dynamics of embryonic development, the size and volume of eggs. Equations were calculated showing that the duration of embryogenesis depends on temperature (coefficient of determination R2 = 0.879) and to a small extent on the length of the female (R2 = 0.311). On average, the duration of embryonic development is 26.9 ± 7.0 days at an average temperature of 20.6 ± 4.2 °C and an average body length of females of 39.4 ± 2.2 mm. The average length and width of eggs at the initial stage of incubation (eggs without eyes) are 1.16 ± 0.10 and 0.85 ± 0.07 mm, respectively, and the volume is 0.45 ± 0.10 mm3. In the final stage of embryogenesis, the size indicators increase. The length and width of eyed eggs increase by approximately 1.2 times, with an average of 1.37 ± 0.09 and 0.98 ± 0.10 mm, respectively, and the volume increases to 0.70 ± 0.17 mm3.
About the Authors
V. F. KuleshBelarus
Viktor F. Kulesh – D. Sc. (Biol.), Professor
27, Sovetskaya Str., 220030, Minsk
Yu. G. Hihiniak
Belarus
Yury G. Hihiniak – Ph. D. (Biol.), Leading Researcher
27, Akademicheskaya Str., 220072, Minsk
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