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.10.35885/1684-7318-2026-1-122-128sevin-729Research ArticleКРАТКИЕ СООБЩЕНИЯSHORT COMMUNICATIONSПервая находка Graptoleberis smirnovi Sinev, Gavrilko, 2020 (Cladocera, Anomopoda, Chydoridae) в пойменном ильмене Волго-Ахтубинской поймыFirst finding of Graptoleberis smirnovi Sinev, Gavrilko, 2020 (Cladocera, Anomopoda, Chydoridae) in the ilmen (shallow floodplain lake) of the Volga-Akhtuba floodplainhttps://orcid.org/0000-0002-3389-9900ФедяеваЛ. А.FedyayevaL. A.

Людмила Андреевна Федяева

Лаборатория экологии водных беспозвоночных

152742; пос. Борок, д. 109; Ярославская обл.; Некоузский р-н; Борок

Liudmila A. Fedyaeva

Laboratory of Ecology of Aquatic Invertebrates

152742; Yaroslavl oblast; Nekouzsky district; 109 Borok

fedyayevala@mail.ruhttps://orcid.org/0000-0002-6972-0351ФедяевР. А.FedyayevR. A.

Роман Александрович Федяев

397418; Воронежская обл.; Новохопёрский р-н; Варварино

Roman A. Fedyayev

397418; Voronezh oblast; Novokhopersky district; Varvarino

segoletok83@mail.ruИнститут биологии внутренних вод им. И. Д. Папанина РАНРоссияI. D. Papanin Institute for Biology of Inland Waters of the Russian Academy of SciencesRussian FederationХоперский государственный заповедникРоссияKhoper State Nature ReserveRussian Federation20261604202601122128Copyright © Федяева Л.А., Федяев Р.А., 20262026Федяева Л.А., Федяев Р.А.Fedyayeva L.A., Fedyayev R.A.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/729

   Впервые найден редкий вид ветвистоусого рачка Graptoleberis smirnovi Sinev, Gavrilko, 2020 в Волго-Ахтубинской пойме. Вид встречался летом в литоральной части пойменного ильменя Большой, характеризующегося сильной степенью зарастания водными макрофитами (70 %), высокой прозрачностью (1.5 м) и высокой температурой воды (28 ºС). Численность и биомасса Graptoleberis smirnovi были, соответственно, 0.5 тыс. экз./м3 и 4.5 мг/м3, что составило – 0.7 и 1.1 % от общей численности и биомассы сообщества. Размер самок варьировал от 0.42 до 0.55 мм.

   For the first time, an individual of an extremely rare species of the cladoceran Graptoleberis smirnovi Sinev, Gavrilko, 2020 was found in the Volga–Akhtuba floodplain. The species was found in the summer in the littoral part of the Bolshoy floodplain lake, which is characterized by a high degree of overgrowth with aquatic macrophytes (70 %), high transparency (1.5 m), and water temperature (28 ºC). The abundance and biomass of Graptoleberis smirnovi were 0.5 thousand ind./m3 and 4.5 mg/m3, respectively, which accounted for 0.7 % and 1.1 % of the total abundance and biomass of the community. The size of females ranged from 420 to 550 μm.

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