The First Record of the Microturbellarian Macrostomum longituba Papi 1953 (Platyhelminthes, Rhabditophora) in Russian Freshwater Fauna S. V. BerdnikR. P. Tokinova OriginalPaper 28 December 2021 Pages: 1157 - 1159
Age Dynamics of Helminth Fauna of the Herring Gull (Larus argentatus) in Kola Bay, Barents Sea V. V. KuklinM. M. Kuklina OriginalPaper 28 December 2021 Pages: 1160 - 1169
Daptonema paramonovi sp. n. (Nematoda, Monhysterida) from a Mangrove Habitat in Vietnam Phan ke LongNguyen Dinh TuV. G. Gagarin OriginalPaper 28 December 2021 Pages: 1170 - 1175
Biotopic Allocation of Morpho-Ecological Groups of Earthworms (Oligochaeta, Lumbricidae) to the Main Forest Types in the Bol’shaya Laba River Basin (Northwestern Caucasus) A. P. GeraskinaN. E. Shevchenko OriginalPaper 28 December 2021 Pages: 1176 - 1188
New Data on the Reproductive System of Syrnolopsis minuta Bourguignat 1885 (Gastropoda, Cerithioidea) from Lake Tanganyika, Africa T. Ya. Sitnikova OriginalPaper 28 December 2021 Pages: 1189 - 1192
Underestimation of the Effect of Biologiocal Invasions in Phylogeographic Reconstructions as Seen in Daphnia magna (Crustacea, Cladocera) D. P. KarabanovE. I. BekkerA. A. Kotov OriginalPaper 28 December 2021 Pages: 1193 - 1201
Long-Term and Seasonal Dynamics of the Population of Cercopagis pengoi (Ostroumov 1891) (Cladocera, Onychopoda) in the Eastern Part of the Gulf of Finland, Baltic Sea L. F. Litvinchuk OriginalPaper 28 December 2021 Pages: 1202 - 1209
Revision of the Genus Mesocyclops Sars 1914 (Copepoda, Cyclopidae) of the World Fauna V. R. Alekseev OriginalPaper 28 December 2021 Pages: 1210 - 1230
Records of the Siberian–Beringian Genus Nordodiaptomus (Copepoda, Calanoida) from the European Part of Russia E. B. Fefilova OriginalPaper 28 December 2021 Pages: 1231 - 1235
Life Cycle and Taxonomic Status of Senecella siberica Vyshkvartzeva 1994 (Copepoda, Calanoida) in Large Norilsk Lakes, Pyasina River Basin, Central Siberia O. P. Dubovskaya OriginalPaper 28 December 2021 Pages: 1236 - 1239
The Invasion Level of the Hermit Crab, Diogenes pugilator Roux 1828 (Decapoda, Anomura, Diogenidae), by the Rhizocephala Crustacean, Septosaccus cuenoti Duboscq 1912 (Rhizocephala, Peltogastridae) in the Black Sea off the Coast of Crimea A. V. KoulishL. V. Yushko OriginalPaper 28 December 2021 Pages: 1240 - 1249
Calceoli: Antennal Sensory Organs of Amphipods (Crustacea, Amphipoda, Gammaridea) from Lake Baikal I. V. Mekhanikova OriginalPaper 28 December 2021 Pages: 1250 - 1262
A Comparative Analysis of the Growth and Lifespan of Ophiacantha bidentata Retzius 1805 (Echinodermata, Ophiuroidea) in the High Latitudes of the Russian Arctic E. A. Stratanenko OriginalPaper 28 December 2021 Pages: 1263 - 1271
Features of Structural Changes in the Plankton Community of an Alpine Lake with Increasing Fish Density in Summer and Autumn A. V. KrylovA. O. HayrapetyanB. K. Gabrielyan OriginalPaper 28 December 2021 Pages: 1272 - 1283
Effect of Fish on the Transfer Efficiency of Carbon, PUFA, and Nutrients from Phytoplankton to Zooplankton under Eutrophic Conditions I. Yu. FeniovaE. G. SakharovaM. Karpowicz OriginalPaper 28 December 2021 Pages: 1284 - 1297
Morphology of the Olfactory Organ in the Climbing Perch (Anabas testudineus, Anabantidae, Perciformes) A. O. KasumyanN. I. PashchenkoL. T. K. Oanh OriginalPaper 28 December 2021 Pages: 1298 - 1313
Reproductive Biology of the Rock Lizard (Darevskia saxicola, Reptilia, Lacertidae) A. A. Kidov OriginalPaper 28 December 2021 Pages: 1314 - 1318
First Record of the Lizard Genus Podarcis Wagler 1830 (Reptilia, Lacertidae) in the Caucasus T. M. IskenderovI. V. DoroninA. M. Kulieva OriginalPaper 28 December 2021 Pages: 1319 - 1322
Influence of Testosterone on Different Aspects of Bird Behavior and Physiology M. Y. GoretskaiaI. R. Beme OriginalPaper 28 December 2021 Pages: 1323 - 1331
Effects of Environmental Conditions on Spring Arrival, the Timing of Nesting, and the Reproductive Effort of Ross’s Gull (Phodostethia rosea) in the Delta of Lena River, Yakutia S. V. VolkovV. I. Pozdnyakov OriginalPaper 28 December 2021 Pages: 1332 - 1341
Cranes (Gruiformes, Gruidae) of the Northern Pontic Area in the Late Holocene A. N. TsvelykhS. Y. Tajkova OriginalPaper 28 December 2021 Pages: 1342 - 1346
Biology and Ecology of the Redpoll (Acanthis flammea sensu lato, Passeriformes, Fringillidae) on Yamal Peninsula and in the Near-Ob Forested Tundra V. N. RyzhanovskiyV. K. Ryabitsev OriginalPaper 28 December 2021 Pages: 1347 - 1357
Intraspecific Variability of the Shape of the Lower Third Premolar in Ochotona hyperborea (Pallas 1811) A. E. GusevM. P. Tiunov OriginalPaper 28 December 2021 Pages: 1358 - 1366
Host Aspect of Territorial Expansion of the Plague Microbe Yersinia pestis from the Populations of the Tarbagan Marmot (Marmota sibirica) V. V. Suntsov OriginalPaper 28 December 2021 Pages: 1367 - 1379
Geographical Variability of the Craniological Characters in Eversmann’s Hamsters and the Taxonomic Structure of the Genus Allocricetulus (Cricetidae) A. V. GureevaV. S. LebedevA. V. Surov OriginalPaper 28 December 2021 Pages: 1380 - 1388
Ecology of the Siberian Lemming (Lemmus sibiricus) and the Distribution History of the Collared Lemming (Dicrostonyx torquatus) (Rodentia, Cricetidae) on the New Siberian Islands V. M. Safronov OriginalPaper 28 December 2021 Pages: 1389 - 1393
Marking Activities of the Moose (Alces alces) in Central Yakutia A. V. Argunov OriginalPaper 28 December 2021 Pages: 1394 - 1400
Restoration of the Amur Tiger (Panthera tigris altaica) Population in the Northwest of Its Distribution Area V. V. RozhnovS. V. NaidenkoV. A. Kastrikin OriginalPaper 28 December 2021 Pages: 1401 - 1423
Nutrition of the Red Fox (Vulpes vulpes) in Bol’shekhekhtsirskii Nature Reserve and Its Environs (Southern Part of the Amur River Region) K. N. Tkachenko OriginalPaper 28 December 2021 Pages: 1424 - 1433
Species-Specific Structure of the Frontal Part of the Skull in the Sable (Martes zibellina) and the European Pine Marten (Martes martes) V. G. Monakhov OriginalPaper 28 December 2021 Pages: 1434 - 1441