Ing. Karel Halačka CSc.

Position grant funded researcher

Direction ichtyology

Workplace Research facility Brno

+420 543 422 532

halacka@ivb.cz

Research intersts

ecology, reproduction of fish, histochemistry and karyology,
study of silver crucian carp (Carassius auratus gibelio) polyploid complex and its dynamics on the territory of the Czech Republic,
reproduction of fishes, histology of their gonads and integumen,
conservation of endangered fish species.

Running Projects

Confluence of Moravia and Dyje - present and future (2024–2026)

Finished projects

Why and how animals abandon sex? On the causal role of hrybridizatuion in triggering asexual reproduction (2017–2019)

.. (2015–2018)

.. (2016–2018)

Fish biodiversity in the Morava and Dyje confluence area – supporting and stabilization of rare and endangered species populations (2007–2009)

Population and genetic structure of brown trout and grayling as groundwork for efficient management of fisheries in salmonid waters (2005–2009)

Education:

1979-1983: undergraduate study – Mendel University of Agriculture and Forestry, Brno, specialization fishery. Thesis: Influence of aflatoxins contaminated food on fry carp.

Employment

1985-1989: Ph.D. stay – Institute of Vertebrate Zoology, Department of Ichthyology, thesis: Histology, histochemistry and ultrastructure of fish epidermis.
1989–present: Institute of Vertebrate Biology AS CR – reserach scientist.

Publications and Applied outputs

Halačka K, Mareš J, Poštulková E, Malý O (2021). Marking of rainbow trout with Alizarin. Certified Methodology.

2020

Šmiga Ľ, Fedorčák J, Faltýnková A, Stefanov T, Bystrianska J, Halačka K, Koščová L, Koščo J (2020). Endohelminth Parasites in Loaches Cobitis spp. (Actinopterygii: Cobitidae), with the First Record of Allocreadium transversale (Rudolphi, 1802) (Digenea: Allocreadiidae) in Bulgaria. Acta Zoologica Bulgarica, 72: 311-314.

Lusk S, Halačka K, Vetešník L, Lusková V, Hanel L (2020). Three decades since finishing the Water Management Development in South Moravia project (1989–2019). Lampetra. Bulletin pro výzkum a ochranu biodiverzity vodních toků, 9: 81-136.

Blabolil P, Bartoň D, Halačka K, Kočvara L, Kolařik T, Kubečka J, Šmejkal M, Peterka J (2020). The fate of 0+ asp (Leuciscus aspius) after being stocked in a reservoir. Biologia.

Kočí J, Röslein J, Pačes J, Kotusz J, Halačka K, Koščo J, Fedorčák J, Iakovenko N, Janko K (2020). No evidence for accumulation of deleterious mutations and fitness degradation in clonal fish hybrids: Abandoning sex without regrets. Molecular Ecology.

Halačka K, Mareš J (2020). Mucus collection in fish. Certified Methodology.

Halačka K (2020). Methodology for measuring the character of the mucus layer in fish. Certified Methodology.

Halačka K (2020). Light source for detecting biological material stained with Alizarin red S extended beam. Utility Model 33795.

Halačka K (2020). Equipment for locating fish during electro-fishing. Utility Model 33985.

Halačka K (2020). Magnifier for detecting biological material stained with Alizarin red S. Utility Model 33794.

2019

Adámek Z, Mikl L, Šlapanský L, Jurajda P, Halačka K (2019). The diet of predatory fish in drinking water reservoirs how can they contribute to biomanipulation efforts?. Folia zoologica.

Halačka K, Mareš J, Vetešník L, Blabolil P (2019). Application of the alizarin red S mass marking technique and its detection in stocked asp (Leuciscus aspius). Biologia.

Halačka K, Vetešník L, Muška M (2019). Fish species listed in the EU Nature Directives on territory of the Czech Republic. Příroda.

Bartoš O, Röslein J, Kotusz J, Pačes J, Pekárik L, Petrtýl M, Halačka K, Štefková Kašparová E, Mendel J, Boron A, Juchno D, Leska A, Jablonska O, Beneš V, Šídová M, Janko K (2019). The Legacy of Sexual Ancestors in Phenotypic Variability, Gene Expression, and Homoeolog Regulation of Asexual Hybrids and Polyploids. Molecular Biology and Evolution.

Halačka K, Adámek Z, Jurajda P, Mareš J, Kopp R, Grmela J (2019). Management plan of small water supply reservoirs of Landštejn type. Certified Methodology.

Halačka K, Adámek Z, Jurajda P, Mareš J, Kopp R, Grmela J (2019). Management plan of small water supply reservoirs of Bojkovice and Ludkovice type. Certified Methodology.

Halačka K, Adámek Z, Jurajda P, Mareš J, Kopp R, Grmela J (2019). Management plan of small water supply reservoirs of Hamry type. Certified Methodology.

Halačka K (2019). Gadget for measurement of UV radiation absorption in mucus. Functional Sample.

Halačka K (2019). Technology of Loach marking by Alizarin. Verified Technology.

Mendel J, Halačka K, Vetešník L (2019). Method of identification of European freshwater fish and hybrides in biological materials by S7ICAPS method. Patent EP 3199643.

Halačka K, Vetešník L, Fedorčák J, Koščo J (2019). Influence of sampling and fixation on measuring of genome size.

Halačka K (2019). Method of measuring the protective skin functions against radiation.

2018

Jurajda P, Roche KF, Halačka K, Mrkvová M, Zukal J (2018). Winter activity of common bream (Abramis brama L.) in a European reservoir. Fisheries Management and Ecology.

Fedorčák J, Pekárik L, Halačka K, Šmiga Ľ, Manko P, Hajdú J, Vetešník L, Koščo J (2018). Microhabitat preferences of triploid Cobitis fish and diploid progenitors in two streams in Slovakia (Danube River Basin). Limnologica.

Halačka K, Vetešník L, Mareš J (2018). Preparation and storage of fish samples for flow cytometry. Certified Methodology.

Halačka K, Poštulková E, Mareš J, Vetešník L (2018). Possibility to use marking of pike by Alizarin Red and method for field detection of marked fish. Verified Technology.

Mendel J, Halačka K, Vetešník L (2018). Method of identification of European freshwater fish and hybrids in biological materials using S7iCAPS method. Patent 307525.

2017

Halačka K, Muška M, Mendel J, Vetešník L (2017). A newly discovered population of the Balkan spiny loach Sabanejewia balcanica (Karaman, 1922) in the River Jihlava, Czech Republic. Folia zoologica.

Fedorčák J, Koščo J, Halačka K, Manko P (2017). Growth differences in different biotypes of the hybrid complex of Cobitis elongatoides x Cobitis tanaitica (Actinopterygii: Cypriniformes: Cobitidae) in the Okna River (Danube River basin), Slovakia. Acta Ichthyologica et Piscatoria.

Lusk S, Koščo J, Lusková V, Halačka K, Mendel J, Košúth P (2017). The nonindigenous fish Perccottus glenii in the Tisza River drainage, Eastern Slovakia – I. part: history of invasion, habitat associations and genetic characteristics (results up to the year 2006). Lampetra. Bulletin pro výzkum a ochranu biodiverzity vodních toků, 8: 127-143.

Lusk S, Halačka K, Májsky J, Vetešník L, Mendel J (2017). Balcan golden loach (Sabanejewia balcanica) in the Czech Republic - past, present and future. Lampetra. Bulletin pro výzkum a ochranu biodiverzity vodních toků, 8: 90-102.

Mendel J, Halačka K, Mareš J (2017). Utilization of polymerase chain reaction, PCR-RFLP technique and sequence analysis for determination of homozygotes, intraspecific heterozygotes and interspecific hybrids of the genus Salvelinus in breeding facilities. Certified Methodology.

Halačka K, Poštulková E, Kopp R, Mareš J (2017). Alternative marking of stocking fishes to enable their subsequent observation. Verified Technology.

2016

Stierandová S, Vukic J, Vasil'eva ED, Zogaris S, Shumka S, Halačka K, Vetešník L, Švátora M, Nowak M, Stefanov T, Koščo J, Mendel J (2016). A multilocus assessment of nuclear and mitochondrial sequence data elucidates phylogenetic relationships among European spirlins (Alburnoides, Cyprinidae). Molecular Phylogenetics and Evolution.

2015

Šimková A, Hyršl P, Halačka K, Vetešník L (2015). Physiological and condition-related traits in the gynogenetic-sexual Carassius auratus complex: different investments promoting the coexistence of two reproductive forms?. BMC Evolutionary Biology.

Šimková A, Vojtek L, Halačka K, Hyršl P, Vetešník L (2015). The effect of hybridization on fish physiology, immunity and blood biochemistry: A case study in hybridizing Cyprinus carpio and Carassius gibelio (Cyprinidae). Aquaculture.

Halačka K (2015). Differences in haematology and respiratory system morphology at three neogobiid species. Open Life Sciences.

Halačka K, Pekárik L (2015). Length-weight relationship of Cobitis elongatoides Heckel & Kner, 1858 from a pure diploid population in the Nová Říše Reservoir, Czech Republic. Journal of Applied Ichthyology.

Halačka K, Kopp R, Klíma O, Mareš J (2015). Epidermis structure in the brook trout (Salvelinus fontinalis) and its Arctic char (Salvelinus alpinus) hybrid. Acta veterinaria Brno.

2014

Vítek T, Halačka K, Bartoňová-Marešová E, Vetešník L, Spurný P (2014). Identification of natural hybrids between Cottus poecilopus, Heckel, 1837, and Cottus gobio, Linnaeus, 1758, at a hybrid zone on the Svratka River (Czech Republic). Journal of Applied Ichthyology.

2013

Vetešník L, Halačka K, Šimková A (2013). The effect of ploidy and temporal changes in the biochemical profile of gibel carp (Carassius gibelio): a cyprinid fish species with dual reproductive strategies. Fish Physiology and Biochemistry.

2012

Halačka K, Vítek T, Vetešník L, Spurný P (2012). Epidermis structure and blood parameter differences between sculpin Cottus gobio and Siberian sculpin Cottus poecilopus from the Morava watershed. Folia zoologica.

Mendel J, Papoušek I, Marešová E, Vetešník L, Halačka K, Nowak M, Čížková D (2012). Permanent Genetic Resources added to Molecular Ecology Resources Database 1 April 2012 – 31 May 2012. Molecular Ecology Resources.

Sivka U, Halačka K, Sušnik Bajec S (2012). Morphological differences in the skin of marble trout Salmo marmoratus and of brown trout Salmo trutta. Folia Histochemica Et Cytobiologica.

2011

Prchalová M, Horký P, Slavík O, Vetešník L, Halačka K (2011). Fish occurrence in the fishpass on the lowland section of the River Elbe, Czech Republic, with respect to water temperature, water flow and fish size. Folia zoologica.

2010

Lusková V, Lusk S, Halačka K, Vetešník L (2010). Carassius auratus gibelio—the most successful invasive fish in waters of the Czech Republic. Russian Journal of Biological Invasions.

Halačka K, Vetešník L, Papoušek I, Mendel J, Šimková A (2010). The epidermal structure of Carassius gibelio: a link with ploidy status in spawning and postspawning periods. Journal of Fish Biology.

Halačka K, Vetešník L, Mendel J, Papoušek I (2010). Can spawning marks on females of the spined loach (Cobitis sp., Teleostei) be caused by scratches from males during mating?. Folia zoologica.

2009

Vetešník L, Halačka K, Papoušek I, Mendel J, Šimková A (2009). První nález přirozeného hybrida plotice obecné Rutilus rutilus a ostroretky stěhovavé Chondrostoma nasus v povodí Dunaje, Česká republika: morfologické, karyologické a molekulární charakteristiky. Journal of Fish Biology.

2008

Papoušek I, Lusková V, Koščo J, Lusk S, Halačka K, Povž M, Šumer S (2008). Genetická diverzita druhů rodu Cobitis (Cypriniformes: Cobitidae) z různých povodí. Folia zoologica.

Bartoňová E, Papoušek I, Lusková V, Koščo J, Lusk S, Halačka K, Švátora M, Vetešník L (2008). Genetická diverzita a taxonomie Sabanejewia balcanica (Osteichthyes: Cobitidae) ve vodách České republiky a Slovenska. Folia zoologica.

Flajšhans M, Rodina M, Halačka K, Vetešník L, Gela D, Lusková V, Lusk S (2008). Characteristics of sperm of polyploid Prussian carp Carassius gibelio. Bulletin VÚRH Vodňany, 44: 78-81.

Flajšhans M, Rodina M, Halačka K, Vetešník L, Gela D, Lusková V, Lusk S (2008). Charakteristika spermií polyploidních jedinců karase stříbřitého Carassius gibelio. Journal of Fish Biology.

Mendel J, Lusk S, Vasil'eva ED, Vasil'ev VP, Lusková V, Ekmekci FG, Erk'kan F, Ruchin A, Koščo J, Vetešník L, Halačka K, Šanda R, Pashkov AN, Reshetnikov SI (2008). Molekulární fylogeneze rodu Gobio Cuvier, 1816 (Teleostei: Cyprinidae) a její přínos pro taxonomii. Molecular Phylogenetics and Evolution.

Mendel J, Lusk S, Koščo J, Vetešník L, Halačka K, Papoušek I (2008). Genetická diverzita populací Misgurnus fossilis z České republiky a Slovenska. Folia zoologica.

Papoušek I, Vetešník L, Halačka K, Lusková V, Humpl M, Mendel J (2008). Identifikace přírodních hybridů karasa stříbřitého Carassius auratus gibelio (Bloch) a karasa obecného Carassius carassius L. ze zátopové oblasti dolního toku řeky Dyje (Česká republika). Journal of Fish Biology.

Papoušek I, Lusková V, Koščo J, Lusk S, Halačka K, Povž M, Šumer S (2008). Genetická diverzita druhů rodu Cobitis (Cypriniformes: Cobitidae) z různých povodí. Folia zoologica.

2007

Halačka K, Vetešník L, Lusk S, Mendel J, Papoušek I (2007). X1X1X2X2/X1X2Y pohlavní chromozomový systém u drska většího Zingel zingel (Pisces: Perciformes) z řeky Moravy (Česká republika). Caryologia.

Koščo J, Lusk S, Halačka K, Pekárik L, Košuthová L (2007). Výskyt chráněných a invazních druhů ryb v povodí Iplu. Natura Carpatica, 48: 141-152.

Vetešník L, Papoušek I, Halačka K, Lusková V, Mendel J (2007). Morfometrická a genetická analýza komplexu Carassius auratus z umělého mokřadu v zátopovém území řeky Moravy (Česká republika). Fisheries Science.

2006

Vetešník L, Halačka K, Lusková V, Lusk S (2006). Červený krevní obraz u diploidního a triploidního karasa stříbřitého (Carassius auratus). Acta veterinaria Brno.

2005

Mendel J, Lusková V, Halačka K, Lusk S, Vetešník L (2005). Využití RAPD markerů k charakterizaci populací druhu Gobio gobio v České a Slovenské republice. Folia zoologica.

Koščo J, Lusk S, Halačka K, Lusková V, Košuth P (2005). Rozšíření druhů rodu Gobio v povodí Tisy na Slovensku. Folia zoologica.

Lojkásek B, Lusk S, Halačka K, Lusková V, Drozd P (2005). Dopad extrémních záplav v červenci 1997 na ichtyocenozu povodí Odry (Česká republika). Hydrobiologia.

Lusk S, Halačka K, Lusková V, Horák V (2005). Rozšíření hrouzků v České republice. Folia zoologica.

Lusk S, Lusková V, Halačka K, Šlechtová V, Šlechta V (2005). Charakteristika zbytkové populace Vimba vimba v horní části řeky Dyje. Folia zoologica.

Šlechtová V, Lusková V, Šlechta V, Halačka K, Lusk S, Koščo J (2005). Vnitroduhová variabilita isoenzymů hrouzka obecného Gobio gobio v řekách České a Slovenské republiky. Folia zoologica.

2004

Lusk S, Koščo J, Lusková V, Halačka K, Košuth P (2004). Nepůvodní druhy ryb v záplavovém území řek Dyje a Bodrog. Ecohydrology & Hydrobiology.

Horák V, Lusk S, Halačka K, Lusková V (2004). Umělé mokřady – ano nebo ne?. Ecohydrology & Hydrobiology.

Lojkásek B, Lusk S, Halačka K, Lusková V (2004). Rybí společenstva v Chráněné krajinné oblasti Poodří (povodí řeky Odry). Czech Journal of Animal Science.

Lusk S, Halačka K, Lusková V, Vetešník L (2004). Opětovný výskyt Zingel streber (Teleostei: Pisces) v České republice. Folia zoologica.

Lusk S, Hartvich P, Halačka K, Lusková V, Holub M (2004). Vliv extrémních povodí na ryby v řekách a jejich záplavovém území. Ecohydrology & Hydrobiology.

Lusková V, Koščo J, Halačka K, Stráňai I, Lusk S, Flajšhans M (2004). Status populací rodu Cobitis na Slovensku. Biologia.

Lusková V, Halačka K, Vetešník L, Lusk S (2004). Změny ploidního a sexuálního statusu populací „Carassius auratus“ v povodí řeky Dyje (Česká republika). Ecohydrology & Hydrobiology.

Vetešník L, Lusk S, Halačka K, Spurný P (2004). Morfometrická charakteristika a růst Carassius auratus v dolní části řeky Dyje (Česká republika). Ecohydrology & Hydrobiology.

2003

Koščo J, Lusk S, Halačka K, Lusková V (2003). The expansion and occurrence of the Amur sleeper (Perccottus glenii) in eastern Slovakia. Folia zoologica.

Halačka K, Lusková V, Lusk S (2003). Carassius "gibelio" in the fish communities of the Czech Republic. Ecohydrology & Hydrobiology.

Lusk S, Koščo J, Halačka K, Lusková V, Flajšhans M (2003). Identification of Cobitis from the Slovakian part of the Tisza basin. Folia Biologica-Krakow.

Lusk S, Halačka K, Lusková V (2003). Rehabilitating the floodplain of the lower River Dyje for fish. River Research and Applications.

Lusk S, Lusková V, Halačka K, Smutný M (2003). Anglers' catches as an indicator of fish population status. Ecohydrology & Hydrobiology.

2002

Lusk S, Lusková V, Halačka K, Horák V (2002). Osteichthyes. Folia Facultatis Scientiarum Naturalium Universitatis Masarykianae Brunensis, 106: 29-49.

2001

Lusk S, Halačka K, Lusková V, Horák V (2001). Annual dynamics of the fish stock in a backwater of the River Dyje. Regulated Rivers: Research and Management, 17: 571-581.

2000

Lojkásek B, Lusk S, Halačka K, Lusková V (2000). Fish communities in the drainage area of the Osoblaha river and effect of the 1997 flood. Czech Journal of Animal Science.

Lusk S, Lusková V, Halačka K (2000). On the occurrence of populations of the genera Cobitis and Sabanejewia (Pisces, Cobitidae) in the Czech Republic. Folia zoologica.

Šlechtová V, Lusková V, Šlechta V, Lusk S, Halačka K, Bohlen J (2000). Genetická diferenciace dvou diploidně-polyploidních komplexů sekavce, rodu Cobitis (Cobitidae) v České republice, zahrnující C. taenia, C. elongatoides, a C. spp.: Mezipopulační a mezidruhové rozdíly alozymů. Folia zoologica.

Halačka K, Lusková V, Lusk S (2000). Contribution to the occurrence of parasites in Cobitis elonatoides and Cobitis elongatoides x C. sp. Folia zoologica.

Halačka K, Lusková V, Lusk S (2000). Fecundity of Cobitis elongatoides in the Nová Říše Reservoir. Folia zoologica.

1999

Lusk S, Lusková V, Halačka K (1999). Development and status of the ichthyofauna in the waters of the Podyjí National Park. Thayensia, 2: 96-107.

Lusk S, Lusková V, Halačka K (1999). Development and status of the ichthyofauna in the waters of the Podyjí National Park. Thayensia, 2: 108-119.

1998

Halačka K, Lusk S, Lusková V (1998). Fish communities in artificial pools in the floodplain along the lower reaches of the River Dyje. Folia zoologica.

Lusk S, Lusková V, Halačka K (1998). The status of tench (Tinca tinca (L.)) in aquatic habitats of the floodplain along the lower reaches of the River Dyje (Czech Republic). Polskie Archiwum Hydrobiologii, 45: 407-414.

Lusk S, Halačka K, Lusková V (1998). The effect of an extreme flood on the fish communities in the upper reaches of the Tichá Orlice River (The Labe drainage area). Czech Journal of Animal Science.

Lusk S, Lusková V, Halačka K, Šlechta V, Šlechtová V (1998). Trends and production of a fish communities of the barbel zone in a stream of the Czech Republic. Folia zoologica.

1997

Halačka K, Lusková V, Lusk S (1997). Manifestations of senescence in the reproduction of nase, Chondrostoma nasus. Folia zoologica.

Lusk S, Halačka K, Lusková V (1997). Vliv malých vodních elektráren na vodní toky a jejich rybí osídlení. Bulletin VÚRH Vodňany, 33: 111-119.

Lusk S, Halačka K, Jurajda P, Lusková V, Peňáz M (1997). Diversity of fish communities in the waters of the Podyjí National Park. Živočišná výroba, 42: 269-275.

1996

Lusk S, Halačka K, Lusková V, Pražák O (1996). Fish assemblages of the "Soutok" area in Southern Moravia, Czech Republic. Acta Universitatis Carolinae, Biologica, 40: 147-155.

Baruš V, Halačka K, Prokeš M (1996). Presence and distribution of the nematode Anguillicola crassus in the European eel in the Morava River drainage basin, Czech Republic. Živočišná výroba, 41: 219-224.

Halačka K (1996). Structure and histochemistry of the epidermis of Barbel (Barbus barbus). Folia zoologica.

Lusk S, Lusková V, Halačka K (1996). Distribution of species of the family Percidae in the waters of the Czech republic. Acta Universitatis Carolinae, Biologica, 40: 139-145.

Lusková V, Halačka K (1996). Some hematological indices in barbel, Barbus barbus. Folia zoologica.

1995

Lusková V, Lusk S, Halačka K (1995). Yearly dynamics of enzyme activities and metabolite concentrations in blood plasma of Chondrostoma nasus. Folia zoologica.

Halačka K, Lusková V (1995). Interrelations and bioindicative application of epidermal, hematological and biochemical indices in grayling (Thymallus thymallus L.). Acta Universitatis Carolinae, Biologica, 39: 159-167.

Halačka K (1995). Embryonic development of brown trout (Salmo trutta m. fario). Folia zoologica.

Halačka K, Lusk S (1995). Mortality in eggs of nase, Chondrostoma nasus, during incubation. Folia zoologica.

Halačka K (1995). Structure and histochemistry of the epidermis of nase (Chondrostoma nasus). Folia zoologica.

Lusk S, Halačka K (1995). The river bottom and fish populations in streams. Folia Facultatis Scientiarum Naturalium Universitatis Masarykianae Brunensis, 91: 95-100.

Lusk S, Halačka K (1995). The first finding of the Tubenose Goby, Proterorhinus marmoratus, in the Czech Republic. Folia zoologica.

Lusk S, Halačka K (1995). Anglers' catches as an indicator of population size of the nase, Chondrostoma nasus. Folia zoologica.

Lusk S, Halačka K, Lusková V (1995). Influence of small hydroelectric power stations on fish communities in streams. Živočišná výroba, 40: 363-367.

Lusková V, Halačka K, Lusk S (1995). Dynamics of the haemogram in the nase, Chondrostoma nasus. Folia zoologica.

1994

Halačka K, Jurajda P (1994). Charakteristika elektrolovných zařízení pro odlov ryb. Živočišná výroba, 39: 733-741.