danДоклады Национальной академии наук БеларусиDoklady of the National Academy of Sciences of Belarus1561-83232524-2431The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8323-2024-68-1-55-60dan-1175Research ArticleБИОЛОГИЯBIOLOGYОценка миграционных процессов в популяциях ветвистоусых ракообразных (Cladocera)Evolution of migration processes in Cladocera populationshttps://orcid.org/0000-0001-8612-6955РазлуцкийВ. И.RazlutskijV. I.

Разлуцкий Владимир Ильич – канд. биол. наук, вед. науч. сотрудник, доцент.

Ул. Академическая, 27, 220072, Минск

Razlutskij Vladimir I. – Ph. D. (Biology), Leader Researcher, Associate Professor.

27, Akademicheskaya Str., 220072, Minsk

vladimirrazl@gmail.comНаучно-практический центр Национальной академии наук Беларуси по биоресурсамScientific and Practical Center of the National Academy of Sciences of Belarus for Bioresources2024040320246815560Copyright © Разлуцкий В.И., 20242024Разлуцкий В.И.Razlutskij V.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.belnauka.by/jour/article/view/1175

Изменение численности популяции (r) в локальном местообитании определяется соотношением между рождаемостью и смертностью, а также миграционными процессами. В естественных популяциях, включая Cladocera, r определяется как разность логарифмов ее величин, наблюдающихся в конце и начале интервала времени. При таком способе оценки миграционные процессы уже включены в конечную величину численности. Врожденная скорость изменения численности (rmax) может быть определена по данным о возрастной смертности и плодовитости методом таблиц жизни. Между rmax, временем начала репродукции (Drepr) и средней плодовитостью самок за период репродукции (mean_mx ) обнаружена тесная связь (R2 = 0,867). Величина Drepr установлена для большинства Cladocera, аналог mean_mx легко определяется в их естественных популяциях, что позволяет оценить возможную скорость изменения численности (rcalc). Разница между r и rcalc может быть использована для оценки миграционных процессов. Если эта разница положительная, значит из популяции идет эмиграция особей, если отрицательная – приток иммигрантов.

An intrinsic rate of population increase (r) in a local habitat is determined by the birth-to-death ratio and by migration processes. In natural populations, including Cladocera, r is estimated as the logarithm difference of population densities at the end and at the beginning of time interval. Under this method of evaluation, migration processes are already included in the final population density. A realized intrinsic rate of population increase (rmax) can be determined from the data on age-related mortality and fecundity by the life table method. The high regression relation (R2 = 0.867) was found between rmax, the first time of reproduction (Drepr) and mean fecundity during the reproduction period (mean_mx). Drepr is known for most of Cladocera, the mean_mx analog can be easily determined in their natural populations; these parameters can be used to evaluate a possible intrinsic rate of population increase (rcalc). The differences between r and rcalc can be used to evaluate migration processes. If these differences are positive, then individuals are emigrating from the population, if they are negative, then there occurs the influx of immigrants.

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The authors declare that there are no conflicts of interest present.