Influence of hydrological and hydrochemical regimes on species diversity and biological parameters of goby fish of the western part of the Northern Caspian
https://doi.org/10.37663/0131-6184-2022-3-46-51
Abstract
Studies were carried out on the influence of the hydrological and hydrochemical regime on the species diversity and biological parameters of goby fish in the western part of the North Caspian in 2016-2018. It is shown that the species composition in these years was represented by 9 species, with a predominance of sand goby and bighead goby and with the increase in sea salinity, stenohaline fish began to appear: gray whip goby and Khvalyn goby, the number of the latter in catches increased in 2018 compared to 2017 by 16.8 times. The number and biomass of gobies in 2018 increased by 4 times compared to previous years and amounted to 2384 million copies, 16.807 thousand. t., respectively, as well as the improvement of their biological parameters, indicate the favorable state of the population, and hence the food supply for anadromous fish, in particular, sturgeon, semi-anadromous species, marine migratory herring.
About the Authors
S. A. Gutsulyak
Astrakhan State University (ASU)
Russian Federation
Russian Federation
Senior Researcher at the Scientific and Educational Center "Sturgeon Breeding"
T. V. Pomogaeva
All-Russian Research Institute of Fisheries and Oceanography (VNIRO) ("KaspNIRKh")
Russian Federation
Russian Federation
Specialist of the Marine Fish Laboratory of the Volga–Caspian branch of the All-Russian Research Institute of Fisheries and Oceanography (VNIRO) ("KaspNIRKh")
References
1. Stepanova T.G. The significance of bullfishes in the ecosystem of the Caspian Sea / T.G. Stepanova, A.F. Sokolsky // Evolution of ecosystems under the influence of settlers and artificial mortality of fauna: Materials of the International Conference – Rostov-on–Don, 2003. - Pp. 132-133.
2. Molodtsova A.I. The state of sturgeon feeding in the Caspian Sea in 2003 / A.I. Molodtsova, A.A. Polyaninova, A.I. Kashentseva, A.K. Kamelov // Fisheries research in the Caspian Sea: Research results for 2003 – Astrakhan: KaspNIRKh, 2004. – Pp.215–225.
3. Stepanova T.G. Formation of biodiversity and abundance of goby fish in the Northern Caspian / T. G. Stepanova // Fisheries research in the Caspian: Research results for 2003. Collection of scientific tr. – Astrakhan, 2004. – Pp. 268-273.
4. Sudakov G.A. Instructions for the collection and primary processing of materials of aquatic bioresources of the Caspian basin and their habitat / G.A. Sudakov. – Astrakhan: KaspNIRKh, 2011. – 193 p.
5. Pravdin I.F. Guide to the study of fish / I.F. Pravdin. – M.: Food. prom-st, 1966. – 376 p.
6. RD 52.24.496-2005. Temperature, transparency and smell of the surface waters of the land. Measurement methodology, 2005. – 11 p.
7. RD 52.10.243-92. Guidelines for the analysis of marine waters. - St. Petersburg. Hydrometeorological Publishing House, 1993. – p. 263.
8. "Bulletin of the Caspian Sea level" http://www.caspcom.com/
9. Lapitsky I.I. Directed formation of ichthyofauna and management of fish populations in the Tsimlyansk reservoir – Volgograd: Lower Volga Book Publishing House, 1970. – Pp. 171-175.
10. Abdurakhmanov G.M. The influence of environmental factors on the species composition, abundance and distribution of gobies in the western region of the Northern Caspian / G.M. Abdurakhmanov, S.A. Gutsulyak, N.I. Sokolskaya // South of Russia: ecology and development. – 2013. – No. 4. – Pp. 33-40.
11. Ilyin B.S. A new goby from the Caspian Sea Gobius nonultimus sp.n (Pisces, Gobiidae). – Dokl. USSR Academy OF Sciences, 1936. – 4. – №7. – Pp. 325-327.
12. Ragimov D.B. On the taxonomy of gobies of the genus Gobius of the Caspian Sea. in the book: Biological productivity of the Kura-Caspian fishing area. – Baku, 1967. – Pp. 252-277.
13. Pinchuk V.I. Taxonomy of gobies of the genera Gobius Linne (domestic species), Neogobius Iljin and Mesogobius Bleeker // Vopr. ichthyology. – 1977. – Vol. 17. – issue 4(105). – Pp. 587-596.
Review
For citations:
Gutsulyak S.A., Pomogaeva T.V. Influence of hydrological and hydrochemical regimes on species diversity and biological parameters of goby fish of the western part of the Northern Caspian. Fisheries. 2022;(3):46-51. (In Russ.) https://doi.org/10.37663/0131-6184-2022-3-46-51
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