Improving the biotechnology of growing Silurus Glanis L., Clarias Gariepinus, Pangasius Hypophthalmus catfish (Siluroidea) in the waters of energy facilities

Marina Kalaida,Farhad Ismagilov,Evgeny Piganov,Andrey Kalaida,Svetlana Borisova,V.A Golenishchev-Kutuzov

doi:10.1051/e3sconf/202128801045

Marina Kalaida, Farhad Ismagilov + Show 4 more

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https://doi.org/10.1051/e3sconf/202128801045

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The modern biotechnologies of reproduction and cultivation of European catfish, African clary catfish and pangasius are considered. The development of biotechnology led to the development of a technology for its reproduction by the method of hormonal injection with preservation of life of the females and the euthanasia of the males for the collection of pure sperm. Further development of biotechnology is associated with the expansion of species diversity and the inclusion of African clary catfish and pangasius into aquaculture in warm waters.

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In the Middle Volga region, the historically main direction of work was pasture aquaculture on the basis of the largest reservoir in Europe - the Kuibyshev reservoir.Before the regulation of the Volga River, P.A
The only indigenous representative of the catfish (Siluroidea), the European catfish (Silurus glanis L.), is one of the valuable representatives of the ichthyofauna in the Middle Volga region, which has never been significantly represented in catches (Fig. 1)
Since European catfish in all regions are found in single specimens [1, 3, 4], the information of fishermen is of interest [9]

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Introduction

Before the regulation of the Volga River, P.A. Dryagin [1] does not indicate the common catfish (Silurus glanis L.) in the summary of commercial fish, but N.I. Kozhin [2] refers it not as an economically valuable fish species, but as a predatory fish "definitely subject to destruction". Kozhin [2] refers it not as an economically valuable fish species, but as a predatory fish "definitely subject to destruction" In accordance with such ideas about catfish as a rare object - a predator, when developing a working hypothesis for an integrated scheme for using the Volga in 1931 in the project for the construction of a hydroelectric power plant, catfish was not considered as a promising object for fishery and was included in the group of miscellaneous. After the formation of the Kuibyshev reservoir, the catfish catch did not exceed 20 tons, accounting for 0.2-0.6% in catches (Fig. 1)

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