SPECIFIC FEATURES OF EMBRYONIC DEVELOPMENT OF POND SNAIL (LYMNAEA STAGNALIS L.) UNDER ANTHROPOGENIC INFLUENCE OF CHLORIDE COMPOUNDS IN WATER-Reference-Cited by-同舟云学术

SPECIFIC FEATURES OF EMBRYONIC DEVELOPMENT OF POND SNAIL (LYMNAEA STAGNALIS L.) UNDER ANTHROPOGENIC INFLUENCE OF CHLORIDE COMPOUNDS IN WATER

Published:2021-09-30 Issue:3 Volume:2021 Page:134-141
ISSN:2073-5529
Container-title:Vestnik of Astrakhan State Technical University. Series: Fishing industry
language:en
Short-container-title:

Author:

Gorbunov Aleksandr¹,Nikiforov-Nikishin Dmitry²,Gorbunov Oleg²

Affiliation:

1. K. G. Razumovsky Moscow State University of Technologies and Management (the First Cossack University)

2. K. G. Razumovsky Moscow State University of Technologies and Management (the First Cossack University)

Abstract

The article highlights the research of embryonic development of hydrobionts under the influence of anthropogenic factors of water solutions – chlorobenzene and tetrachloroethylene. To detect the toxicity of chloride pollutants in a freshwater reservoir, representatives of benthic mollusks (big pond snail Lymnaea stagnalis L.) were used as a model organism. According to the results of research, it was found that at a concentration of 0.01 mg/l of chlorobenzene solution individual anomalies of embryonic development of the pond fish are observed, but at higher concentrations its development is delayed by 5-6 stages in comparison with the control. As an integral parameter of pond fish development, we can take indicators of the biological toxicity criterion: Hatchling and its survival over a 10-day period after leaving the egg shells. Changes in the physiological parameters of pond fish embryos begin with a chlorobenzene concentration of 0.01 mg/l; the maximum permissible concentration for tetrachloroethylene for the considered biological indicators should be considered 0.05 mg/l. It is noted that in big pond snail (Lymnaea stagnalis L.) the hatch of juveniles from egg shells is the most sensitive indicator when determining the toxicity of an aqueous solution; and less sensitive indicators are the number of eggs laid and the survival of juveniles in the first 10 days after hatching. The test object used is a large pond, which has shown a high sensitivity to contamination of the water environment with chlorinated ecotoxicants and can be recommended for a comprehensive quality assessment when biotesting freshwater waters

Publisher

Astrakhan State Technical University

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