TY - JOUR AU - Bánó, Bálint AU - Benedek, Ildikó AU - Zsolnai, Attila AU - Specziár, András AU - Takács, Péter AU - Molnár, Tamás Gergely TI - Population genetic structure of intensively exploited pikeperch (Sander lucioperca) in Lake Balaton (Hungary) JF - HYDROBIOLOGIA J2 - HYDROBIOLOGIA VL - 851 PY - 2024 SP - 559 EP - 571 PG - 13 SN - 0018-8158 DO - 10.1007/s10750-023-05347-8 UR - https://m2.mtmt.hu/api/publication/34119013 ID - 34119013 AB - Pikeperch ( Sander lucioperca Linnaeus, 1758) is a wide-ranged percid predator fish characterised by a great ecological value in the Eurasian freshwater and brackish ecosystems. It is also one of the most famous fish species of Lake Balaton (Hungary), where a unique (genetically separated) pikeperch stock lives. However, until now, no detailed information was available about the pikeperch population genetic structure in Lake Balaton. In the present study, the population genetic structure of the pikeperch assemblages in the lake was revealed by using microsatellite markers. Commercial fishery and angler catch data going back more than 100 years verified that the pikeperch has always been a key element of Lake Balaton’s fish stock utilization. Results of genetic data analyses showed that the pikeperch in the Lake Balaton forms a metapopulation system, in which only the westward stocks show certain separation. Moreover, it seems that the exploitation and mass fish kills that happened in the 1960s and 1970s may have had only a slight impact on the population genetic structure of Balaton pikeperch stocks. The information about genetic features and utilization changes of pikeperch stocks can help to develop area-specific management plans and ensure the long-term survival of this carnivore fish species characteristic of Lake Balaton. LA - English DB - MTMT ER - TY - CHAP AU - Specziár, András ED - Ferincz, Árpád ED - Staszny, Ádám ED - Dérér, István ED - Urbányi, Béla TI - Selymes durbincs (Gymnocephalus schraetser) +9 db szócikk T2 - Magyar Halkönyv PB - Magyar Országos Horgász Szövetség CY - Budapest SN - 9786156211026 PY - 2023 SP - 167 PG - 30 UR - https://m2.mtmt.hu/api/publication/34823521 ID - 34823521 N1 - Selymes durbincs (Gymnocephalus schraetser) pp 295-297 Vágó durbincs (Gymnocephalus cernua) pp 292-294 Széles durbincs (Gymnocephalus baloni) pp 289-291 Kősüllő (Sander volgensis) pp 280-282 Süllő (Sander lucioperca) pp 277-279 Bodorka (Rutilus rutilus) pp 180-183 Dévérkeszeg (Abramis brama) pp 176-179 Karikakeszeg (Blicca bjoerkna) pp 173-175 Bagolykeszeg (Abramis sapa) pp 170-172 Laposkeszeg (Abramis ballerus) pp 167-169 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Fazekas, Dorottya AU - Antal, László AU - Halasi-Kovács, Béla AU - Kwiatkowski, Maciej AU - Tóth, Flórián AU - Specziár, András AU - Mozsár, Attila TI - Acute effects of angler’s groundbaits: nutrient flux to water column JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 13 PY - 2023 IS - 1 PG - 12 SN - 2045-2322 DO - 10.1038/s41598-023-44381-3 UR - https://m2.mtmt.hu/api/publication/34204707 ID - 34204707 AB - Although ground-baiting related nutrient loading has been widely studied, we do not know what proportion of these nutrients release into the water column, afecting primary production directly. We conducted short-term (24-h, 5-day) experiments at wide temperature range, in presence and absence of fsh using fsh meal-based (FM-GB) and plant-based groundbait (PB-GB), to assess the nitrogen (N) and phosphorus (P) fuxes from GB into the water column. Nitrogen release from unconsumed FM-GB was negligible in the frst 3 days, then increased abruptly, releasing 32% of its total N content by the ffth day. In contrast, PB-GB acted as temporary sink for inorganic N forms. Considerable (18–21%) inorganic P release was observed in both GB types in the frst twelve hours. Consumed GBs induced considerable inorganic N release and its rate increased with temperature. Particulate forms predominated the released N in PB-GB, suggesting impaired digestion. Phosphorus—dominated by particulate forms—release was similar or lower than in unconsumed GB. Based on our results, excessive use of GB—when high amount of it remains unconsumed—can enhance eutrophication in P-limited ecosystems. Although less digestible GBs may have less abrupt efect on the primary production, undigested nutrients remain unavailable for removal through fsh harvest. LA - English DB - MTMT ER - TY - CONF AU - Bánó, Bálint AU - Benedek, Ildikó AU - Zsolnai, Attila AU - Specziár, András AU - Takács, Péter AU - Molnár, Tamás ED - Lázár, Diána TI - Az intenzíven hasznosított süllő (Sander lucioperca) populációgenetikai szerkezete a Balatonban. T2 - LXIV. Hidrobiológus Napok 2023. október 4-6. Program PY - 2023 SP - 4 EP - 4 PG - 1 UR - https://m2.mtmt.hu/api/publication/34192698 ID - 34192698 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Kolics-Horváth, Éva AU - Mátyás, Kinga Klára AU - Taller, János AU - Specziár, András AU - Kolics, Balázs ED - Bene, Szabolcs Albin TI - A lítium-klorid kontakt hatásának igazolása in vitro és in situ Varroa atka elleni alkalmazása esetén T2 - XXIX. Ifjúsági Tudományos Fórum : Konferenciakötet PB - Magyar Agrár- és Élettudományi Egyetem, Georgikon Campus CY - Keszthely SN - 9786156338082 PY - 2023 SP - 185 EP - 190 PG - 6 UR - https://m2.mtmt.hu/api/publication/34160396 ID - 34160396 N1 - A kutatás az Európai Unió és a Magyar Kormány támogatásával az Európai Regionális Fejlesztési Alap és a Széchenyi 2020 program társfinanszírozási konstrukciójában a GINOP-2.3.2-15-2016-00054 azonosító számú projekt keretében valósult meg. LA - Hungarian DB - MTMT ER - TY - CONF AU - Kaszab, Edit AU - Dzsudzsák, Emília AU - Jiang, Dongze AU - Kriszt, Balázs AU - Specziár, András AU - Müller, Tamás ED - Antal, László ED - Somogyi, Dóra TI - A hévízi törpenövésű vadponty (Cyprinus carpio carpio morpha hungaricus) mikrobiom-analízise. T2 - A XIX. MAGYAR HALTANI KONFERENCIA PROGRAMJA ÉS ELŐADÁS-KIVONATAI PB - Magyar Haltani Társaság CY - Debrecen SN - 9786156159045 PY - 2023 SP - 12 EP - 12 PG - 1 UR - https://m2.mtmt.hu/api/publication/33750771 ID - 33750771 LA - Hungarian DB - MTMT ER - TY - CONF AU - Erős, Tibor AU - Sály, Péter AU - Specziár, András ED - Antal, László ED - Somogyi, Dóra TI - Tavak ökológiai állapotának meghatározása az EU tagállamaiban – változatosság halindexre. T2 - A XIX. MAGYAR HALTANI KONFERENCIA PROGRAMJA ÉS ELŐADÁS-KIVONATAI PB - Magyar Haltani Társaság CY - Debrecen SN - 9786156159045 PY - 2023 SP - 4 EP - 4 PG - 1 UR - https://m2.mtmt.hu/api/publication/33750756 ID - 33750756 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kolics, Balázs AU - Mátyás, Kinga Klára AU - Solti, Izabella AU - Bacsi, Zsuzsanna AU - Kovács, Szilvia AU - Specziár, András AU - Taller, János AU - Kolics-Horváth, Éva TI - Efficacy of In Vitro Lithium Chloride Treatments on Dermacentor reticulatus JF - INSECTS J2 - INSECTS VL - 14 PY - 2023 IS - 2 PG - 9 SN - 2075-4450 DO - 10.3390/insects14020110 UR - https://m2.mtmt.hu/api/publication/33594577 ID - 33594577 AB - Dermacentor reticulatus (Fabr., 1794) (Acari: Ixodidae) is parasite that spreads many diseases which are dangerous to humans and animals. Microelement lithium was found to have promising potential against the detrimental bee pest Varroa destructor. Furthermore, its effectiveness was confirmed against Dermanyssus gallinae, a major parasite of poultry, in vitro. In the present study, we investigated whether the efficacy of lithium chloride extends to other parasitic species, such as D. reticulatus. Our results revealed, for the first time, that the effectiveness of lithium chloride extends to D. reticulatus, confirmed to have 100% mortality at a relatively high minimum concentration of 1.38 M in vitro. The 24 h and 48 h median lethal concentration (LC50) values proved to be 0.654 M and 0.481 M, respectively, for this species. Our pilot study may contribute to a better understanding of the properties of lithium ion. Furthermore, it may elicit further studies aiming to reveal whether the different environmental mineral conditions may influence the D. reticulatus population. Further studies might reveal whether lithium has any possible veterinary relevance. LA - English DB - MTMT ER - TY - JOUR AU - Füstös, Vivien AU - Sály, Péter AU - Szalóky, Zoltán AU - Tóth, Balázs AU - Vitál, Zoltán AU - Specziár, András AU - Fleit, Gábor AU - Baranya, Sándor AU - Józsa, János AU - Erős, Tibor TI - Effects of a nuclear power plant warmwater outflow on environmental conditions and fish assemblages in a very large river (the Danube, Hungary) JF - ECOHYDROLOGY J2 - ECOHYDROLOGY VL - 16 PY - 2023 IS - 3 PG - 13 SN - 1936-0584 DO - 10.1002/eco.2512 UR - https://m2.mtmt.hu/api/publication/33575179 ID - 33575179 AB - Direct or indirect effects of nuclear power plants' (NPPs) warmwater effluents on the structure of biotic assemblages are poorly known in very large rivers. We examined changes in physical habitat structure, temperature condition and their possible effects on the structure of Danubian fish assemblages due to the outflow of the Paks NPP's warmwater channel, in Hungary. Seasonal surveys conducted both upstream and downstream from the outfall showed that its hydromorphological effects were generally local and comparable to natural or other anthropogenic hydromorphological changes. The effect of the returned cooling water was more apparent in the seasonally recorded surface water temperatures and depended highly on the spatial positioning of the sampling sites. However, environmental and spatial variables accounted only for a low amount of variance in case of both shoreline and offshore fish assemblage data. Overall, we found that the outflow exerted only a local scale effect on the structure of Danubian fish assemblages. Rather, fish assemblages varied largely both inshore and offshore, which dynamics overruled any effects of the artificially elevated temperature. Our study highlights the importance of the assessment of hydrogeomorphological variability of rivers and their influence on fish assemblage variability when examining spatial effects of thermal pollution. LA - English DB - MTMT ER - TY - CHAP AU - Müller, Tamás AU - Bógó, B. AU - Ferincz, Árpád AU - Horváth, József AU - Staszny, Ádám AU - Ivánovics , Bence AU - Weiperth, András AU - Lente, Vera AU - Hajnal, M. AU - Specziár, András TI - Hévízi törpenövésű vadponty (Cyprinus carpio carpio morpha hungaricus) szaporodásának és szaporításának sajátosságai T2 - A XVIII. MAGYAR HALTANI KONFERENCIA PROGRAMJA ÉS ELŐADÁS-KIVONATAI PB - Magyar Haltani Társaság CY - Debrecen SN - 9786156159021 PY - 2022 SP - 7 EP - 8 PG - 2 UR - https://m2.mtmt.hu/api/publication/34410357 ID - 34410357 LA - Hungarian DB - MTMT ER -