BIOLOGY OF THE SIBERIAN GRAYLING THYMALLUS ARCTICUS IN THE BASIN OF THE RIVER TOM’
Journal: BULLETIN OF KEMEROVO STATE UNIVERSITY. SERIES: BIOLOGICAL, ENGINEERING AND EARTH SCIENCES
Volume 2 № 1
, 2018
Rubrics: BIOLOGY
Authors:
1.
Novosibirsk Branch of the Federal State Budget Scientific Institution «Gosrybtsentr»
Type:
Article
Pages:
from 27
to 31
Status:
Published
Received:
24.06.2018
Accepted:
24.06.2018
Published:
24.06.2018
Language:
Russian
Keywords:
population, age, spawning, fecundity, nutrition, fishing
Abstract (English):
In 2016, the author monitored the population of Siberian grayling in the Tom’ river and its large tributaries within the Kemerovo region. The aim of the research was to determine the biological parameters of the Siberian grayling population. Observations were conducted from April to October in the Novokuznetsk area. Fishing was carried out by multicellular shutters networks and spinning. The graylings’ length and body weight were measured. The age of the fish was assessed by its scales. The author determined the period of spawning run into mountain rivers and calculated the absolute and individual fecundity of the grayling females. Absolute fertility was determined by the countable-weight method. Individual relative fertility was calculated according to the mass of gonads, the size of the sample and the number of caviars. The article presents data on the development of caviars and the growth of larvae, as well as nutrition and filling of the gastrointestinal tract. The article also includes some oobserved data on amateur grayling fishing.
In 2016, the author monitored the population of Siberian grayling in the Tom’ river and its large tributaries within the Kemerovo region. The aim of the research was to determine the biological parameters of the Siberian grayling population. Observations were conducted from April to October in the Novokuznetsk area. Fishing was carried out by multicellular shutters networks and spinning. The graylings’ length and body weight were measured. The age of the fish was assessed by its scales. The author determined the period of spawning run into mountain rivers and calculated the absolute and individual fecundity of the grayling females. Absolute fertility was determined by the countable-weight method. Individual relative fertility was calculated according to the mass of gonads, the size of the sample and the number of caviars. The article presents data on the development of caviars and the growth of larvae, as well as nutrition and filling of the gastrointestinal tract. The article also includes some oobserved data on amateur grayling fishing.
Keywords:
population, age, spawning, fecundity, nutrition, fishing
population, age, spawning, fecundity, nutrition, fishing
