Conditions for the Formation of the Artemia Crustacean Population and Their Production Indicators in Different Types of Hyperhaline Lakes of the Altai Territory

Vesnina, L. V.

doi:10.31677/2072-6724-2020-30-4-87-100

Innov. prodovol. bezop.

2021

DOI: 10.31677/2072-6724-2020-30-4-87-100

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Conditions for the Formation of the Artemia Crustacean Population and Their Production Indicators in Different Types of Hyperhaline Lakes of the Altai Territory

L. V. Vesnina

Abstract: Long-term data (2002–2019) on the conditions of the formation of Artemia populations in different types of hyperhaline lakes of the Altai Territory are analyzed. The boundaries of individual fecundity and average fecundity were calculated, the influence of abiotic factors on the quality content of ovisak was shown. The peculiarities of their changes at different levels of water salinity during the growing season have been investigated. The average number of litters (clutches) for Altai populations was calculat… Show more

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Cited by 3 publications

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Seasonal and interannual dynamics of Artemia crustacean population from hypersaline Lake Kuchukskoye (Western Siberia)

et al. 2022

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The paper presents the findings of studying the influence of main natural environmental factors on interannual (2017–2018, 2020–2021) and seasonal (from April to October) dynamics of Artemia population from large hypersaline lake Kuchukskoye located in the Kulunda steppe (Altai Krai, Russia). We studied the relationship of 7 key indicators of the population structure (abundance, biomass and age structure) with hydrophysical and hydrochemical indixes (temperature, transparency, pH and total salinity). In different years, hydrophysical and hydrochemical regime of lake Kuchukskoye may vary significantly thus affecting brine shrimp population indicators. The revealed changes in the structure of zooplankton are mainly due to the inhibitory effect of increased salinity on the Artemia population and other taxa.

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Seasonal and interannual dynamics of Artemia crustacean population from hypersaline Lake Kuchukskoye (Western Siberia)

et al. 2022

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The influence of abiotic factors on the productivity indicators of A. var. Principalis in aquaculture

et al. 2023

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The work is devoted to the study of the influence of abiotic factors, primarily the salinity level on the productivity of artemia in aquaculture in situ. The problem is relevant, since in the last decade there has been an increase in global aquaculture production by 35%, which has led to an increase in the need for artemia cysts and the nauplia obtained from them. Due to the shortage on the world market of artemia cysts extracted in natural ecosystems and their high cost, there is a need to improve the methods of cultivating artemia in a closed cycle in an artificial ecosystem – in aquaculture. To develop effective methods of cultivating artemia in situ, it is important to know the production and morphological indicators of different types of artemia and its races in an artificially created environment. It is known that there is a wide ecological valence of the reproductive function of artemia in relation to varying environmental factors. One of the most important factors determining the reproductive potential of artemia is the salinity of the environment. The level of salinity of water has a great influence on the productivity of artemia crustaceans, both in the natural environment and in aquaculture. The aim of our study was to assess the reproductive potential of artemia and optimize the salinity of the environment to increase the reproductive potential in conditions of artificial breeding in situ. The results of the study showed that with an increase in the concentration of salt in the solution for the cultivation of the available artemia race – A. var. Principalis, – the proportion of synchronously fruiting females increased. When studying the absolute fertility of artemia, it was shown that an increase in the salinity level of the habitat at the reproductive age of females makes it possible to increase their absolute fertility when growing in a closed cycle in aquaculture.

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The Role of Brackish-Water Fauna and the State of the Bioresource of the Ecosystem of the Hypergaline Lake Kulundinskoye in the Phase of Transgression (Altai Krai)

et al. 2023

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The results of ecological monitoring of the hypergaline lake Kulundinskoye of the Altai Territory in the period 2021-2022 are presented. The research was carried out in the form of a comprehensive study of abiotic factors of the reservoir (climatic features of the lake, temperature regime, salinity of water), biological factors (species composition of brackish-water zooplankton, its abundance), production and structural indicators of the gill-legged crustacean Artemia Leach, 1819. Desalination of water during the transgressive period of water content caused successional speciation processes. There was a change of the gill-legged crustacean as a dominant and monovid to a complex of brackish-water fauna. The artemia population developed under the influence of unfavorable salinity of water with a fluctuation in the lake from 1.9 (April) to 99.0 mg/dm3. The influence of the transgressive phase of water content on the biota and the extraction (catch) of a biological resource - artemia (at the stage of cysts), as well as the importance of the formation of their commercial accumulations of abiotic environmental factors, is shown. Studies have shown that the prevailing combination of factors during the transgression period – tense climatic conditions, low salinity of water (less than 100 mg/dm3), low number of artemia crustaceans, was the absence of commercial accumulations of biological resources.

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Conditions for the Formation of the Artemia Crustacean Population and Their Production Indicators in Different Types of Hyperhaline Lakes of the Altai Territory

Cited by 3 publications

References 2 publications

Seasonal and interannual dynamics of Artemia crustacean population from hypersaline Lake Kuchukskoye (Western Siberia)

Seasonal and interannual dynamics of Artemia crustacean population from hypersaline Lake Kuchukskoye (Western Siberia)

The influence of abiotic factors on the productivity indicators of A. var. Principalis in aquaculture

The Role of Brackish-Water Fauna and the State of the Bioresource of the Ecosystem of the Hypergaline Lake Kulundinskoye in the Phase of Transgression (Altai Krai)

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