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Биология сига-лудоги юго-западной части Онежского озера

Биология сига-лудоги юго-западной части Онежского озера

Abstract

Research results of 572 samples of the whitefish-ludoga of the southwestern part of Onega Lake (Sheltozero Brusno) are presented. It was revealed that the whitefish-ludoga of this part of Lake Onega is an ecological form of the ordinary whitefish and belongs to a group of “malotychinkovyh” whitefish. The sex ratio of the studied species was close to 1:1. Dimensionally weight indexes of the whitefish-ludoga species ranged from 29,5 to 55,0 cm and from 284,2 to 1798,5 g. The absolute weight increased by age from 127,9 to 183,7 g. The maximum intensity of the body weight accumulation was noted at the age of 3 +...6 + ( 23,5-24,4 %) years, and the highest rate of the species’ linear growth was noted at the age of 4 +.6 + (8,0-9,7 %) years. At the age of 3 +.6+ years old the body weight of the studied species accumulated more intensively than the linear growth. The whitefish-ludoga can be used for cultivation in cage farms and in artificially created recirculation systems.

Представлены результаты исследования 572 экземпляров сига-лудоги юго-западной части Онежского озера (р-н Шелтозеро Брусно). Выявлено, что сиг-лудога этой части Онежского озера является экологической формой сига обыкновенного и относится к группе малотычинковых сигов. Соотношение полов близко к 1 : 1. Размерно-весовые показатели сига-лудоги были в пределах от 29,5 до 55,0 см и от 284,2 до 1798,5 г. Абсолютный прирост массы тела с возрастом увеличивался от 127,9 до 183,7 г. Максимальная интенсивность накопления массы тела отмечена в возрасте 3+...6+ (23,5-24,4%), наибольшая скорость линейного роста в 4+.6+ (8,0-9, 7%). В возрасте 3+.6+ масса тела накапливается интенсивнее по сравнению с линейным ростом. Сиг-лудога может быть использован для выращивания в садковых хозяйствах и в искусственно создаваемых системах замкнутого водоснабжения.

Keywords

ВОЗРАСТНОЙ СОСТАВ,ПОЛОВОЙ СОСТАВ,МЕРИСТИЧЕСКИЕ ПРИЗНАКИ,MERISTIC CHARACTERS,ПЛАСТИЧЕСКИЕ ПРИЗНАКИ,PLASTIC SIGNS,ЛИНЕЙНЫЕ РАЗМЕРЫ,LINEAR DIMENSIONS,МАССА ТЕЛА,WEIGHT,ТЕМП РОСТА,GROWTH RATE,СКОРОСТЬ РОСТА,ONEGA LAKE,WHITEFISH-LUDOGA,AGE STRUCTURE,SEX RATIO

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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