Karpowicz Maciej, Kalinowska Krystyna
1Institute of Biology, Department of Hydrobiology, University of Białystok, Ciołkowskiego 1J, 15-245 Białystok, Poland.
Department of Lake Fisheries, Inland Fisheries Institute in Olsztyn, Rajska 2, 11-500 Giżycko, Poland.
Biologia (Bratisl). 2018;73(12):1197-1204. doi: 10.2478/s11756-018-0138-y. Epub 2018 Oct 26.
The aim of this study was to determine factors affecting the vertical distribution of in mesotrophic lakes (Wigry, Hańcza, Szurpiły; north-eastern Poland) during the summer stagnation. was found in all of the studied lakes, with the highest abundance (8 ind. L) in Lake Wigry. In Lake Szurpiły, has never been recorded before. The results of this study revealed that was most numerous in thermocline zones, suggesting that this species could temporarily tolerate warmer water and lower oxygen concentrations due to better food resources. During the study, it was found that a large part of the population had epibiont ciliates, in contrast to other species of zooplankton that did not have any epibionts. The improvement in the water quality of many deep lakes could lead to an increase in the abundance of . However, epibiont ciliates may be a threat for this species and may play a substantial role in determining the production, distribution, and community dynamics of .
本研究的目的是确定在夏季停滞期影响中营养湖泊(波兰东北部的维格里湖、哈恩恰湖、苏尔皮利湖)中[某物种]垂直分布的因素。在所有研究湖泊中均发现了[该物种],维格里湖中的丰度最高(8个个体/升)。在苏尔皮利湖中,此前从未记录到[该物种]。本研究结果表明,[该物种]在温跃层区域数量最多,这表明由于更好的食物资源,该物种能够暂时耐受水温升高和氧气浓度降低的环境。在研究过程中发现,与其他没有任何体表共生生物的浮游动物物种相比,[该物种]种群的很大一部分具有体表共生纤毛虫。许多深水湖泊水质的改善可能导致[该物种]丰度增加。然而,体表共生纤毛虫可能对该物种构成威胁,并且可能在决定[该物种]的产量、分布和群落动态方面发挥重要作用。