EFFICIENCY OF SEMI-ANADROMOUS AND RIVER FISHES’ REPRODUCTION  IN DIFFERENT WATER MODES OF THE VOLGA RIVER

Natalya Chavychalova

doi:doi:10.37663/0131-6184-2020-2-67-73

VAK Russia 06.04.2000 VAK Russia 06.04.2001 VAK Russia 08.00.00

EFFICIENCY OF SEMI-ANADROMOUS AND RIVER FISHES’ REPRODUCTION IN DIFFERENT WATER MODES OF THE VOLGA RIVER

Published в Fisheries · Volume 2020, Issue 2, 2020 · Pages 67–73 · Rubrics: Inland reservoir

DOI 10.37663/0131-6184-2020-2-67-73

Received: 07.04.2020 Accepted: 13.04.2020 Published: 13.04.2020

Authors

Natalya Chavychalova ¹

1 The Volga-Caspian branch of the FSSI "VNIRO" ("CaspNIRKh») (Laboratory Reproduction of fishes, Head of laboratory)
Astrahan', Astrakhan, Russian Federation

ABSTRACT

The paper shows the efficiency of natural reproduction of semi-anadromous fish, including the main commercial species such as roach and bream, and river fish species depending on the volume, hydrological regime and duration of spring flood, and the temperature regime of the Volga river during fish spawning. A comparative assessment of the conditions and results of roach and bream reproduction in different water years and periods of Volga runoff regulation is given. The dependence between feeding duration of semi-anadromous and river fry and the efficiency of reproduction, the number of viable younglings and their biological indicators in different water years is shown.

KEYWORDS

flood spawning spawning ground reproduction roach bream feeding efficiency viability biomass

Information References

Authors:

1. The Volga-Caspian branch of the FSSI "VNIRO" ("CaspNIRKh») (Laboratory Reproduction of fishes, Head of laboratory)

Astrahan', Astrakhan, Russian Federation

Type:

Article

Pages:

from 67 to 73

Status:

Published

Subject area:

VAK Russia 06.04.2000
VAK Russia 06.04.2001
VAK Russia 08.00.00

Language:

Russian

Keywords:

flood, spawning, spawning ground, reproduction, roach, bream, feeding, efficiency, viability, biomass

References

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4. Instrukciya po sboru i pervichnoy obrabotke materialov vodnyh bioresursov Kaspiyskogo basseyna i sredy ih obitaniya. Astrahan': KaspNIRH, 2011. 233 s.

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6. Alehina R.P., Finaeva V.G. 2001. Ocenka effektivnosti razmnozheniya poluprohodnyh ryb v del'te Volgi // Ekologiya molodi i problemy vosproizvodstva Kaspiyskih ryb. Izd-vo VNIRO. S. 7-20.

7. N.I. Chavychalova, D.G. Taradina, O.M. Vasil'chenko, R.S. Muhanova Sostoyanie estestvennogo vosproizvodstva poluprohodnyh i rechnyh ryb v nizov'yah Volgi / Prirodnye ekosistemy Kaspiyskogo regiona: proshloe, nastoyaschee, buduschee // Mater Vserossiyskoy nauchnoy konferencii s mezhdunarodnym uchastiem, posvyaschennoy 100-letiyu Astrahanskogo gosudarstvennogo zapovednika. Astrahan'. - 2019.S. 121-123.

EFFICIENCY OF SEMI-ANADROMOUS AND RIVER FISHES’ REPRODUCTION IN DIFFERENT WATER MODES OF THE VOLGA RIVER

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