Evgeny Nikolaevich LOBACHEV's research while affiliated with National Institute of Biological Resources and other places

Publications (10)

Article
Full-text available
Aim. Analysis of the distribution and status of ctenophores В eroe ovata and Mnemiopsis leidyi , and assessment of the parameters of their interaction in the Middle Caspian Sea. Material and Methods. The material was obtained in the western and eastern parts of the Middle Caspian Sea in September–October 2022. Large ctenophores were collected using...
Article
Full-text available
Aim . Analysis of changes in quantitative and structural indicators of phytoplankton in the western and central part of the middle Caspian Sea over the past decades, including according to remote sensing data. Material and Methods . The data was obtained in 2004–2008 and 2019–2022 at different seasons of the year at 40 stations in the central and w...
Article
Aim. Analysis of new data on populations of invasive ctenopfores Вeroe ovata and Mnemiopsis leidyi in the Caspian Sea and assessment of adaptation of B. ovata to new habitat conditions.Material and methods. The data was obtained in the Dagestan sector of the Middle Caspian Sea in September‐November 2021. Ctenophores and zooplankton were collected b...
Article
Conducted has been the study on the influence of abnormally high temperatures in the summer of 2021 on nutrition, nutritional interactions and anatomical and histological organization of the anterior and middle intestine of carp in the conditions of the Daghestan coast of the Caspian Sea. It is shown that under the influence of high temperatures in...
Article
The article presents data on the fishery significance of the Kizlyar and Agrakhan bays. Based on the results of the conducted researches, an assessment of the current state of the bays and recommendations on the need for ongoing and capital reclamation works to preserve the natural spawning grounds of passing and semi-passing fish species are given...
Article
For more than a century of active commercial exploitation and environmental changes in the Caspian Sea, the structure of the population of marine fish species has undergone significant qualitative and quantitative changes. In this group of fish until 1960, the main role in the fishery was played by sea herring, which provided up to 50–70% of the to...
Article
The article has, for the first time in 20 years, presented the data on weight growth of the rainbow trout, grown in cag-es, in the territory of the Republic of Daghestan. The experiment has been conducted on the 5000 fries of the rainbow trout with an average weight of 41 gr. throughout the spring period. Tested was the original feed of the simplif...
Article
The article is devoted to the study of biological characteristics of the north Caspian roach of the Daghestan coast of the Caspian Sea. Discussed are size and weight, fatness, passing the stage of gonad maturity, the absolute individual fecundity and feeding habits. The degree of occurrence of organisms in the food lumps with identification of domi...