TY - JOUR AU - Zsuga, Katalin AU - Korponai, János TI - Dr. Forró László – Zsuga Katalin és Korponai János megemlékezése JF - HIDROLÓGIAI KÖZLÖNY J2 - HIDROL KOZL VL - 103 PY - 2023 IS - 4 SP - 81 EP - 81 PG - 1 SN - 0018-1323 UR - https://m2.mtmt.hu/api/publication/34431729 ID - 34431729 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Zsuga, Katalin TI - CSÁKÁNYOSPUSZTA TÉRSÉGÉNEK ZOOPLANKTON EGYÜTTESE JF - BIODATA HUNGARICA : A MAGYAR BIODIVERZITÁS-KUTATÓ TÁRSASÁG FOLYÓIRATA J2 - BIODATA HUNG VL - 1 PY - 2023 SP - 52 EP - 59 PG - 8 SN - 3004-0647 UR - https://m2.mtmt.hu/api/publication/34425183 ID - 34425183 AB - Abstract – We investigated the zooplankton community in the Csákányospuszta during the XVIIth Biodiversity Days on 2017, June 10th at 5 sampling places. At all these sites, small, shallow wet areas were found. Within the zooplankton community the Rotifera, Cladocera and Copepoda assemblages were investigated. The composition of the small crustacean group was poor with few species, with the juvenile forms (nauplii, copepodits) being characteristic. The rotifers provided the largest proportion of the zooplankton community regarding both abundance ratio and species richness. In the Rotifera assemblage more halobiont indicator species were found, next to which fresh- and saltwater, halophilic and marsh organisms occurred as well. This special, ambivalent species collection gives reason for a further examination and a detailed survey of this wet area, especially the ravine located in the alder grove. LA - Hungarian DB - MTMT ER - TY - DATA AU - Tóth, Flórián AU - Zsuga, Katalin AU - Kerepeczki, Éva AU - Kovács, Balázs AU - Magura, Tibor AU - Körmöczi, László AU - Lövei, Gábor TI - Discordant spatio-temporal dynamics of functional and phylogenetic diversity of rotiferan communities exposed to aquaculture effluent PY - 2023 DO - 10.5061/dryad.c2fqz61fn UR - https://m2.mtmt.hu/api/publication/34129312 ID - 34129312 LA - English DB - MTMT ER - TY - JOUR AU - Tóth, Flórián AU - Zsuga, Katalin AU - Kerepeczki, Éva AU - Berzi-Nagy, László AU - Körmöczi, László AU - Lövei, Gábor TI - A Kákafoki Holt-Körös kerekesféreg közösségének diverzitásváltozásai akvakultúrából származó elfolyóvíz hatására JF - HALÁSZATFEJLESZTÉS J2 - HALÁSZATFEJLESZTÉS VL - 38 PY - 2021 SP - 48 PG - 1 SN - 1219-4816 UR - https://m2.mtmt.hu/api/publication/32188140 ID - 32188140 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Zsuga, Katalin AU - Zarina, Inelova AU - Boros, Emil TI - Zooplankton Community Structure in Shallow Saline Steppe Inland Waters JF - WATER J2 - WATER-SUI VL - 13 PY - 2021 IS - 9 PG - 13 SN - 2073-4441 DO - 10.3390/w13091164 UR - https://m2.mtmt.hu/api/publication/31984406 ID - 31984406 AB - Abstract: Several shallow saline waters can be found in Central Asia in arid steppe climate, but our knowledge of their zooplankton community has been so far rather limited. The aim of our research was to provide data on the steppe zooplankton community in a large-scale regional study. Therefore, a baseline survey was carried out in 23 shallow inland waters of different salinity in Northern Kazakhstan. We measured the quantity and identified the taxonomic composition of zooplankton in the spring period and examined changes in community structure in correlation with salinity. Lesser salt concentration of the hyposaline–mesosaline waters was indicated by the presence of halophilic rotifer species: Brachionus asplanchnoides Br. dimidiatus, Br. plicatilis. Mesosaline and hypersaline waters were indicated by the presence of halobiont crustaceans: Moina salina, Arctodiaptomus salinus, Cletocamptus retrogressus. Very high concentration of salt was indicated by presence of Artemia alone which is the only group, that can tolerate and adapt to this extreme environment. In the hypersaline waterbodies at over 79 gL􀀀1 high TDS conditions a very simple tropical structure was found. Artemia playing monopolistic ecological function in the zooplankton community. We identified three characteristic groups of shallow inland saline waters based on their zooplankton composition. LA - English DB - MTMT ER - TY - JOUR AU - Datki, Zsolt László AU - Ács, Éva AU - Balázs, Evelin AU - Sovány, Tamás AU - Pannonhalminé Csóka, Ildikó AU - Zsuga, Katalin AU - Kálmán, János AU - Oláh, Zita TI - Exogenic production of bioactive filamentous biopolymer by monogonant rotifers JF - ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY J2 - ECOTOX ENVIRON SAFE VL - 208 PY - 2021 PG - 10 SN - 0147-6513 DO - 10.1016/j.ecoenv.2020.111666 UR - https://m2.mtmt.hu/api/publication/31776926 ID - 31776926 N1 - A publikáció a Nemzeti Közszolgálati Egyetem 2020. évi Tématerületi Kiválóság Program keretében, a Fenntartható biztonság és társadalmi környezet elnevezésű projekt támogatásával valósult meg, az Innovációs és Technológiai Minisztérium Nemzeti Kutatási, Fejlesztési és Innovációs Alapból nyújtott támogatásával, a Nemzeti Kutatási, Fejlesztési és Innovációs Hivatal által kibocsátott támogatói okirat alapján. AB - The chemical ecology of rotifers has been little studied. A yet unknown property is presented within some monogonant rotifers, namely the ability to produce an exogenic filamentous biopolymer, named ‘Rotimer’. This rotifer-specific viscoelastic fiber was observed in six different freshwater monogonants (Euchlanis dilatata, Lecane bulla, Lepadella patella, Itura aurita, Colurella adriatica and Trichocerca iernis) in exception of four species. Induction of Rotimer secretion can only be achieved by mechanically irritating rotifer ciliate with administering different types (yeast cell skeleton, denatured BSA, epoxy, Carmine or urea crystals and micro-cellulose) and sizes (approx. from 2.5 to 50 μm diameter) of inert particles, as inductors or visualization by adhering particles. The thickness of this Rotimer is 33 ± 3 nm, detected by scanning electron microscope. This material has two structural formations (fiber or gluelike) in nano dimension. The existence of the novel adherent natural product becomes visible by forming a ‘Rotimer-Inductor Conglomerate’ (RIC) web structure within a few minutes. The RIC-producing capacity of animals, depends on viability, is significantly modified according to physiological-(depletion), drug- (toxin or stimulator) and environmental (temperature, salt content and pH) effects. The E. dilatata-produced RIC is affected by protein disruptors but is resistant to several chemical influences and its Rotimer component has an overwhelming cell (algae, yeast and human neuroblastoma) motility inhibitory effect, associated with low toxicity. This biopolymer-secretion-capacity is protective of rotifers against human-type beta-amyloid aggregates. LA - English DB - MTMT ER - TY - JOUR AU - Flórián, Tóth AU - Zsuga, Katalin AU - Éva, Kerepeczki AU - László, Berzi-Nagy AU - Körmöczi, László AU - Gábor, L. Lövei TI - Seasonal Dierences in Taxonomic Diversity of Rotifer Communities in a Hungarian Lowland Oxbow Lake Exposed to Aquaculture Euent JF - WATER J2 - WATER-SUI VL - 12 PY - 2020 IS - 5 PG - 12 SN - 2073-4441 UR - https://m2.mtmt.hu/api/publication/31984507 ID - 31984507 AB - Abstract: With the intensification of aquaculture technologies, the amount of feed input and waste material is increasing, creating potentially negative impacts on freshwater habitats receiving euent from such systems. Changes in biodiversity of zooplankton communities is often used to assess the eects of such impacts. Rotifers are suitable for bioindication of water quality due to their fast reaction to environmental changes. We examined seasonal changes in the diversity of rotifer communities along a 3.5 km section of the biggest oxbow lake in the Tisza River basin, Hungary, that received inflow from an intensive tank-based aquaculture farm. We detected a species-rich rotifer community with 26 species. Using the Rényi one-parameter diversity index families, we found that biodiversity increased away from the point of inflow in spring, but after a summer transition period the situation became partially reversed during autumn. At the beginning of the study period, the nutrient-rich euent strengthened the dominance of common species, which decreased but did not disappear in summer. In autumn, the extra nutrient input delayed the decline of the rotifer community at the point of euent. LA - English DB - MTMT ER - TY - JOUR AU - Tóth, Flórián AU - Zsuga, Katalin AU - Kerepeczki, Éva AU - Berzi-Nagy, László AU - Jakabné Sándor, Zsuzsanna AU - Körmöczi, László TI - Halastavi zooplankton közösségi összetételében rejlő különbségek eltérő takarmányösszetevők használata mellett JF - HALÁSZATFEJLESZTÉS J2 - HALÁSZATFEJLESZTÉS VL - 37 PY - 2020 SP - 93 EP - 96 PG - 4 SN - 1219-4816 UR - https://m2.mtmt.hu/api/publication/31612918 ID - 31612918 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Tóth, Flórián AU - Zsuga, Katalin AU - Kerepeczki, Éva AU - Berzi-Nagy, László AU - Jakabné Sándor, Zsuzsanna AU - Körmöczi, László TI - The Effect of Feed Composition on the Structure of Zooplankton Communities in Fishponds JF - WATER J2 - WATER-SUI VL - 12 PY - 2020 IS - 5 SP - 1338 SN - 2073-4441 DO - 10.3390/w12051338 UR - https://m2.mtmt.hu/api/publication/31308083 ID - 31308083 AB - Abstract: With the intensification of aquaculture, the structure and dynamics of aquatic ecosystems are highly aected. At the same time, for a pond fish farmer, one of the most important tasks is to establish and maintain stable and favourable zooplankton populations. In this paper, we assess the eects of dierent supplementary feed types on zooplankton communities in freshwater fishponds. In an outdoor, experimental fishpond system, carp individuals of 2+ years of age were stocked and fed with either a fishmeal-based diet (FF), a plant meal containing experimental feed (PF) or cereals (CT). To compare the diversity of the zooplankton communities, we used the Shannon diversity index, and to assess the eects of environmental factors and the feed ingredients, we applied canonical correspondence analysis. We described the dynamics of zooplankton communities, where the biodiversity of rotifera and Crustacean communities showed temporal dierences. In order to examine the eects of feed ingredients, temporal clustering was applied. The dierent diets did not consistently alter the composition of zooplankton communities. Consequently, the plant meal containing experimental feed had no negative eect on the planktonic biodiversity, which makes it suitable as an alternative feed source for fishponds at the applied level. LA - English DB - MTMT ER - TY - JOUR AU - Tóth, Flórián AU - Zsuga, Katalin AU - Kerepeczki, Éva AU - Berzi-Nagy, László AU - Körmöczi, László AU - Lövei, Gábor TI - Seasonal Differences in Taxonomic Diversity of Rotifer Communities in a Hungarian Lowland Oxbow Lake Exposed to Aquaculture Effluent JF - WATER J2 - WATER-SUI VL - 12 PY - 2020 IS - 5 PG - 11 SN - 2073-4441 DO - 10.3390/W12051300 UR - https://m2.mtmt.hu/api/publication/31307540 ID - 31307540 LA - English DB - MTMT ER -