sevinПОВОЛЖСКИЙ ЭКОЛОГИЧЕСКИЙ ЖУРНАЛPovolzhskiy Journal of Ecology1684-73182541-8963Федеральное государственное бюджетное учреждение науки Институт проблем экологии и эволюции им. А. Н. Северцова РАН; Товарищество научных изданий КМК.10.35885/1684-7318-2026-2-177-191sevin-753Research ArticleСтатьиПланктонные организмы в малом водоеме с хищным растением Utricularia vulgaris L. (Lentibulariaceae, Lamiales)Planktonic organisms in a small pond with a carnivorous plant Utricularia vulgaris L. (Lentibulariaceae, Lamiales)https://orcid.org/0000-0002-5006-4956КурбатоваС. А.KurbatovaS. A.

Курбатова Светлана Анатольевна

Лаборатория экспериментальной экологии Института биологии внутренних вод им. И. Д. Папанина РАН

152742 , Ярославская обл ., Некоузский р-н , пос. Борок

Svetlana A. Kurbatova

Laboratory of Experimental Ecology, Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences

Borok, Nekouzsky district, Yaroslavl oblast 152742

kurb@ibiw.ruhttps://orcid.org/0000-0002-7754-8416ЕршовИ. Ю.YersovI. Yu.

Ершов Игорь Юрьевич

152742 , Ярославская обл ., Некоузский р-н , пос. Борок

Igor Yu. Yershov

Borok, Nekouzsky district, Yaroslavl oblast 152742

yershov4@yandex.ruhttps://orcid.org/0000-0001-6250-3306МыльниковаЗ. М.MylnikovaZ. M.

Мыльникова Зоя Михайловна

152742 , Ярославская обл ., Некоузский р-н , пос. Борок

Zoya M. Mylnikova

Borok, Nekouzsky district, Yaroslavl oblast 152742

m.mylnikova@rambler.ruhttps://orcid.org/0000-0003-1121-0612БорисовскаяЕ. В.BorisovskayaE. V.

Борисовская Елена Витальевна

152742 , Ярославская обл ., Некоузский р-н , пос. Борок

Elena V. Borisovskaya

Borok, Nekouzsky district, Yaroslavl oblast 152742

bor3751012@mail.ruhttps://orcid.org/0000-0002-7653-539XБыковаС. Н.BykovaS. N.

Быкова Светлана Николаевна

152742 , Ярославская обл ., Некоузский р-н , пос. Борок

Svetlana N. Bykova

Borok, Nekouzsky district, Yaroslavl oblast 152742

svetlanabikova@gmail.comИнститут биологии внутренних вод им. И. Д. Папанина РАНРоссияPapanin Institute for Biology of Inland Waters of the Russian Academy of SciencesRussian Federation20260908202602177191Copyright © Курбатова С.А., Ершов И.Ю., Мыльникова З.М., Борисовская Е.В., Быкова С.Н., 20262026Курбатова С.А., Ершов И.Ю., Мыльникова З.М., Борисовская Е.В., Быкова С.Н.Kurbatova S.A., Yersov I.Y., Mylnikova Z.M., Borisovskaya E.V., Bykova S.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://sevin.elpub.ru/jour/article/view/753

Данные о количественных показателях и видовом составе планктонных ракообразных, коловраток и инфузорий, а также обилии микроорганизмов: бактерий, гетеротрофных нанофлагеллят, раковинных амеб и пигментах фитопланктона получены в ходе трехмесячного исследования малого водоема, где хищное растение Utricularia vulgaris L. было доминирующим видом в фитоценозе. Полученные концентрации хлорофилла а и численность бактерий свидетельствовали об эвтрофном статусе водоема. Copepoda (Cyclopoida и Calanoida) составляли наибольшую долю численности и биомассы зоопланктона. Cladocera были представлены двумя мелкоразмерными видами Bosmina longirostris (O. F. Müller) и Chydorus sphaericus (O. F. Müller). Наибольшее обилие коловраток, инфузорий и раковинных амеб регистрировали в начале лета. В исследованных ловушках Utricularia содержалось 2 4 организма. Всего среди жертв отмечено 26 видов и других таксонов. Личинки Chironomidae и Copepoda становились наиболее частой добычей. В течение сезона увеличивалось количество C. sphaericus среди жертв при одновременно низкой численности вида в планктоне. Хищное питание U. vulgaris осуществлялось на протяжении всего периода активной вегетации, несмотря на свидетельства высокого трофического статуса среды, и предполагаемой достаточности биогенных веществ для автотрофного питания.

Data on the abundance, biomass, and species composition of planktonic crustaceans, rotifers, and ciliates, as well as the abundance of microorganisms such as bacteria, heterotrophic nanoflagellates, testate amoebae, and phytoplankton pigments were obtained during a three-month study of a small water reservoir where a predatory plant Utricularia vulgaris L. was the dominant species in the phytocenosis. The concentrations of chlorophyll a and the number of bacteria indicated the eutrophic status of the pond. Copepoda (Cyclopoida and Calanoida) accounted for the majority of zooplankton abundance and biomass. Cladocera were represented by two small-sized species Bosmina longirostris (O. F. Müller) and Chydorus sphaericus (O. F. Müller). The highest abundance of rotifers, ciliates, and testate amoebae was observed in early summer. The Utricularia traps studied contained 2–4 organisms. A total of 26 different species and other taxa were identified among the victims. Larvae of Chironomidae, as well as copepodites and adult copepods, were the most common prey items. The number of C. sphaericus in the traps increased during the season. At the same time, the number of C. sphaericus in the plankton population was low. Throughout the entire period of active vegetation, predatory feeding of Utricularia vulgaris was observed, despite some evidence of a high trophic status of the environment and the assumed availability of nutrients for autotrophic nutrition.

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