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Issue 91
GENERAL BIOLOGY
UDK: 597.556.331.1
BIOLOGICAL CHARACTERISTICS OF THE PIKEPERCH POPULATION SANDER LUCIOPERCA (LINNAEUS, 1758) OF THE DAGHESTAN COAST OF THE CASPIAN SEA
BARKHALOV Ruslan Magomedovich,
ALIEVA Aminat Kamilovna,
NASIBULINA Botagoz Murasovna,
KUROCHKINA Tatyana Fedorovna,
BARABANOV Vitaly V.
The article presents characteristics of the main biological indicators of the common pikeperch during its feeding on the sea pastures of the Northern and Middle Caspian. Among the semi-migratory and lake-river fish, the pikeperch is of particular fishery importance as the largest and the most valuable representative of the Percidae family in commercial and food terms. It is shown that the basis of the spawning herd of the common pikeperch are males and females aged three to four years old with body length of 30-40 cm and three to five years old - 40-50 cm respectively. Histological examination of the gonads showed that the ovaries of the pikeperch are in the IV stage of maturity within five months from the end of October to the end of March. Mass spawning of the common pikeperch is recorded in April at water temperature of 10-14°C in the spawning grounds. High values of body condition coefficient are noted in female pikeperch in the autumn period which indicate favorable feeding conditions in the studied area.
Pages: 6 - 13
Date: 22.12.2024