RNDr. Marek Šmejkal, Ph.D.

Position Job Position: Research Scientist
Department: Department of Fish and Zooplankton Ecology (FZE)
Workplace: Institute of Hydrobiology

Contact details Phone: +420 387 77 5856, +420 778 485 295
Web: https://www.researchgate.net/profile/Marek-Smejkal
E-mail: marek.smejkal@hbu.cas.cz
Room: 327NB

Others Description:

My main interest at the moment is the invasive ecology of fish, focusing on competition in small lowland ponds and human-made secondary water bodies. Here, I focus on a model example of competition between the native and critically endangered crucian carp (Carassius carassius) and the invasive gibel carp (C. gibelio). To save the disappearing crucian carp, a citizen science website www.zachrankarase.cz/en/ has been created, which serves the public for uploading tips on its last known occurrences. Based on the verification of this data, the repatriation of this species is proceeding again in selected areas of the Czech Republic.

CV: Date of birth: 9.3.1988, Prague, Czech Republic Education: 2007-2010 BSc. Faculty of Science of Charles University in Prague, CR(Thesis: The importance of various types of habitats in reservoirs for fish). 2010-2013 MSc. Faculty of Science University of South Bohemia, CR (Thesis: The importance of various types of littoral habitats for fish in reservoirs). 2013-2017 PhD. student, Faculty of Science University of South Bohemia, CR (Thesis:Ecology of top fish predators, European catfish and asp, with consequences to fish communities) 2013, 2015, 2021 – research visit in Lund University, Sweden (Department of aquatic ecology) Scientific and proffesional experience: 2009 - 2017 part-time job as a student at the Institute of Hydrobiology 2017 - 2019 - postdoc at the Institute of Hydrobiology since 2020 researcher position at the Institute of Hydrobiology Web of Science ResearcherID: E-1269-2017, Total publications: 79, H-index: 18, Sum of times cited: 1020 Projects - main investigator Interreg AT-CZ - Living treasures of streams and ponds (ATCZ00180, 2025-2028) TAČR - Verified technology development for reduction of invasive fish species in small water bodies with fyke nets (SQ01020096, 2025-2027) SFŽP - Engaging youth in the conservation of critically endangered fish species as part of landscape water retention measures (2024-2025) Strategie AV 21, Water and life, Save the crucian carp (2023, Czech Academy of Science) TJ02000012 The enhancement of rheophilous fish reproduction in the artificial river environment, TACR QK1920326 Aquaculture of rheophilous fish, GA MZe (main investigator for Biology centre) 580300/992200 Strategie AV 21, Role of pheromones on spawning migration timing in fish (2017-2019, Czech Academy of Science)

Total found: 112 records
Říha M., Rabaneda Bueno R., Vejřík L., Jarić I., Prchalová M., Šmejkal M., Čech M., Draštík V., Blabolil P., Holubová M., Jůza T., Gjelland K.Ø., Sajdlová Z., Kočvara L., Tušer M., Peterka J. (2025) Hungry catfish—effect of prey availability on movement dynamics of a top predator. Freshwater Biology 70: e70017. DOI: 10.1111/fwb.70017
Říha M., Vejřík L., Rabaneda Bueno R., Jarić I., Prchalová M., Vejříková I., Šmejkal M., Blabolil P., Čech M., Draštík V., Holubová M., Jůza T., Gjelland K.Ø., Sajdlová Z., Kočvara L., Tušer M., Peterka J. (2025) Ecosystem, spatial and trophic dimensions of niche partitioning among freshwater fish predators. Movement Ecology 13: 36. DOI: 10.1186/s40462-025-00559-0
Šmejkal M., Kalous L., Auwerx J., Gorule P., Jarić I., Dočkal O., Fedorova G., Muška M., Thomas K., Takács P., Ferincz A., Choleva L., Lamatsch D.K., Wanzenböck J., Van Wichelen J. (2025) Wetland fish in peril: A synergy between habitat loss and biological invasions drives the extinction of neglected native fauna. Biological Conservation 302: 110948. DOI: 10.1016/j.biocon.2024.110948
Šmejkal M., Rektor A., Thomas K., Gorule P., Tripathi S., Stepanyshyna Y., Ložek F., Bláha M., Boukal D. (2025) Negative impact of the invasive topmouth gudgeon (Pseudorasbora parva) on population growth of a native fish species, the sunbleak (Leucaspius delineatus). NeoBiota 101: 223–242. DOI: 10.3897/neobiota.101.165877
Symonová R., Jůza T., Tesfaye M., Brabec M., Bartoň D., Blabolil P., Draštík V., Kočvara L., Muška M., Prchalová M., Říha M., Šmejkal M., Souza A., Sajdlová Z., Tušer M., Vašek M., Skubic C., Kubečka J., Brabec J. (2025) Transition to piscivory seen through brain transcriptomics in a juvenile percid fish: Complex interplay of differential gene transcription, alternative splicing, and ncRNA activity. Journal of Experimental Zoology Part A: Ecological and Integrative Physiology 343: 257–277. DOI: 10.1002/jez.2886
Tapkir S., Boukal D., Kalous L., Thomas K., Stepanyshyna Y., Kolář V., Duchet C., Šmejkal M. (2025) Eutrophication boosts the competitive advantage of invasive gibel carp over endangered crucian carp. NeoBiota 101: 161–184. DOI: 10.3897/neobiota.101.167955
Tesfaye M., Kumkar P., Hailu M., Verma C.R., Tesfaye G., Petrtýl M., Getahun A., Šmejkal M., Kalous L. (2025) Discovery of Japanese gengorobuna Carassius cuvieri Temminck & Schlegel, 1846 in Ethiopia: implications for fisheries governance BioInvasions Records 14: 155–167. DOI: 10.3391/bir.2025.14.1.13
Tesfaye M., Souza A.T., Šmejkal M., Jůza T., Sajdlová Z., Draštík V., Kočvara L., Symonová R., Meador Travis B., Vašek M., Kubečka J. (2025) Distinct intra-cohort resource utilization in young-of-the-year pikeperch (Sander lucioperca): Evidence from diet and isotopic analysis. Ecology and Evolution 15: e71973. DOI: 10.1002/ece3.71973
Thomas K., Kalous L., Brabec M., Velenský P., Gottwald M., Bartoň D., Tapkir S., Stepanyshyna Y., Šmejkalová Z., Šmejkal M. (2025) Participatory science to complement professional data: Towards conservation of declining native freshwater fish, the crucian carp. Ecological Solutions and Evidence 6: e70055. DOI: 10.1002/2688-8319.70055
Gorule P.A., Šmejkal M., Tapkir S., Stepanyshyna Y., Stejskal V., Follesa M.C., Cau A. (2024) Long-term sublethal exposure to polyethylene and tire wear particles: Effects on risk-taking behaviour in invasive and native fish. Science of the Total Environment 908: 168233. DOI: 10.1016/j.scitotenv.2023.168233
Lennox R.J. , Afonso P., Birnie-Gauvin K. , Dahlmo L.S., Nilsen C.I., Arlinghaus R. , Cooke S.J., Souza A.T., Jarić I., Prchalová M., Říha M., Westrelin S., Twardek W., Aspillaga E., Kraft S., Šmejkal M., Baktoft H., Brodin T., Hellström G., Villegas-Ríos D., Vollset K.W., Adam T., Sortland L.K., Bertram M.G., Crossa M., Vogel E.F., Gillies N., Reubens J. (2024) Electronic tagging and tracking aquatic animals to understand a world increasingly shaped by a changing climate and extreme weather events. Canadian Journal of Fisheries and Aquatic Sciences 81: 326–339. DOI: 10.1139/cjfas-2023-0145
Patoková B. , Patoka J., Bímová K.B. , Görner T., Jančaříková K., Kalous L., Kopecký O., Kořen V., Novák K., Pergl J., Saska L., Skuhrovec J., Šmejkal M., Vodáková B., Pyšek P. (2024) Biologické invaze v environmentální výuce pro druhý stupeň základních škol a nižší stupeň víceletých gymnázií. [Biological invasions in environmental education for the second grade of primary schools and the lower grade of multi-year gymnasiums.] Česká zemědělská univerzita v Praze ISBN: 978-80-213-3431-1.
Šmejkal M., Dočkal O., Thomas K., Verma C.R., Kumkar P., Kalous L. (2024) First record of highly invasive Chinese sleeper Perccottus glenii Dybowski, 1877 (Perciformes: Odontobutidae) in the Elbe River Basin, Czechia. Aquatic Ecology 58: 125–130. DOI: 10.1007/s10452-023-10036-8
Šmejkal M., Thomas K., Kořen V., Kubečka J. (2024) The 50-year history of anglers' record catches of genus Carassius: circumstantial evidence of wiping out the native species by invasive conspecific. NeoBiota 92: 111-128. DOI: 10.3897/neobiota.92.121288
Šmejkal M., Thomas K., Šmejkalová Z., Stepanyshyna Y., Bartoň D., Tapkir S., Meador Travis B., Vašek M. (2024) Isotopic niches reveal the impact of topmouth gudgeon and gibel carp on native crucian carp. NeoBiota 93: 203-224. DOI: 10.3897/neobiota.93.119274
Tesfaye M., Jůza T., Šmejkal M., Hejzlar J., Čech M., Prchalová M., Muška M., Tušer M., Kočvara L., Sajdlová Z., Draštík V., Říha M., Vašek M., Blabolil P., Symonová R., Brabec M., Kubečka J., Souza A.T. (2024) The impact of climatic conditions and food availability on bimodality size structure and density of YOY pikeperch (Sander lucioperca). Hydrobiologia 851: 3665–3681. DOI: 10.1007/s10750-024-05527-0
Bartoň D., Sajdlová Z., Kolařík T., Kubečka J., Duras J., Kortan D., Šmejkal M. (2023) Use of a flow deflector to protect rheophilic fish spawning grounds during hydropeaking. River Research and Applications 39: 561–569. DOI: 10.1002/rra.4084
Blabolil P., Bartoň D., Duras J., Šmejkal M., Muška M. (2023) Rybí společenstvo vodní nádrže Láz v Brdech v roce 2020. [Fish community in the Láz water reservoir in the Brdy Highlands in 2020.] Bohemia centralis 38: 191–202.
Kubečka J., Souza A., Soukalová K., Čech M., Šmejkal M., Ďurišová J., Svojtka M. (2023) S otolity za tajemstvími candátů. [With otoliths after the secrets of pikeperch.] Rybářství 1: 56-59.
Ribeiro de Moraes K., Souza A., Muška M., Hladík M., Čtvrtlíková M., Draštík V., Kučerová A., Krolová M., Sajdlová Z., Šmejkal M., Kubečka J. (2023) Artificial floating islands: a promising tool to support juvenile fish in lacustrine systems. Hydrobiologia 850: 1969–1984. DOI: 10.1007/s10750-023-05204-8

More publications

RNDr. Marek Šmejkal, Ph.D.

CONTACT

Staff search

Specialists

Public and media

Students and Youth

RNDr. Marek Šmejkal, Ph.D.

CONTACT

Staff search

Login to the intranet