Ing. Karel Halačka, CSc.

Position: full-time researcher
Research topics: ichtyology
Department: Working place Brno
Phone: +420 543 422 532
E-mail: halackaivb.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.

Finished projects

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

Population and genetic structure of brown trout and grayling as groundwork for efficient management of fisheries in salmonid waters

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

2014

T. VÍTEK, K. HALAČKA, E. BARTOŇOVÁ-MAREŠOVÁ, L. VETEŠNÍK, P. SPURNÝ: 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 30 (2014) 102-108.

2013

L. VETEŠNÍK, K. HALAČKA, A. ŠIMKOVÁ: 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 39 (2013) 171-180.

2012

K. HALAČKA, T. VÍTEK, L. VETEŠNÍK, P. SPURNÝ: Epidermis structure and blood parameter differences between sculpin Cottus gobio and Siberian sculpin Cottus poecilopus from the Morava watershed, Folia zoologica 61 (2012) 9-16.

J. MENDEL, I. PAPOUŠEK, E. MAREŠOVÁ, L. VETEŠNÍK, K. HALAČKA, M. NOWAK, D. ČÍŽKOVÁ: Permanent Genetic Resources added to Molecular Ecology Resources Database 1 April 2012 – 31 May 2012, Molecular Ecology Resources 12 (2012) 972-974.

U. SIVKA, K. HALAČKA, S. SUŠNIK BAJEC: Morphological differences in the skin of marble trout Salmo marmoratus and of brown trout Salmo trutta, Folia Histochemica Et Cytobiologica 50 (2012) 255-262.

2011

M. PRCHALOVÁ, P. HORKÝ, O. SLAVÍK, L. VETEŠNÍK, K. HALAČKA: 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 60 (2011) 104-114.

2010

K. HALAČKA, L. VETEŠNÍK, I. PAPOUŠEK, J. MENDEL, A. ŠIMKOVÁ: The epidermal structure of Carassius gibelio: a link with ploidy status in spawning and postspawning periods, Journal of Fish Biology 77 (2010) 2171-2179.

K. HALAČKA, L. VETEŠNÍK, J. MENDEL, I. PAPOUŠEK: Can spawning marks on females of the spined loach (Cobitis sp., Teleostei) be caused by scratches from males during mating?, Folia zoologica 59 (2010) 329-331.

V. LUSKOVÁ, S. LUSK, K. HALAČKA, L. VETEŠNÍK: Carassius auratus gibelio—the most successful invasive fish in waters of the Czech Republic, Russian Journal of Biological Invasions 1 (2010) 176-180.

2009

L. VETEŠNÍK, K. HALAČKA, I. PAPOUŠEK, J. MENDEL, A. ŠIMKOVÁ: The first record of a natural hybrid of the roach Rutilus rutilus and nase Chondrostoma nasus in the Danube River Basin, Czech Republic: morphological, karyological and molecular characteristics, Journal of Fish Biology 74 (2009) 1669-1676.

2008

E. BARTOŇOVÁ, I. PAPOUŠEK, V. LUSKOVÁ, J. KOŠČO, S. LUSK, K. HALAČKA, M. ŠVÁTORA, L. VETEŠNÍK: Genetic diversity and taxonomy of Sabanejewia balcanica (Osteichthyes: Cobitidae) in the waters of the Czech Republic and Slovakia$$faut. Eva Bartoňová, Ivo Papoušek, Věra Lusková, J. Koščo, Stanislav Lusk, Karel Halačka, M. Švátora, Lukáš Vetešník, Folia zoologica 57 (2008) 60-70.

M. FLAJŠHANS, M. RODINA, K. HALAČKA, L. VETEŠNÍK, D. GELA, V. LUSKOVÁ, S. LUSK: Charakteristika spermatu polyploidního karase stříbřitého, Carassius gibelio, Bulletin VÚRH Vodňany 44 (2008) 78-81.

M. FLAJŠHANS, M. RODINA, K. HALAČKA, L. VETEŠNÍK, D. GELA, V. LUSKOVÁ, S. LUSK: Characteristics of sperm of polyploid Prussian carp Carassius gibelio, Journal of Fish Biology 73 (2008) 323-328.

J. MENDEL, S. LUSK, J. KOŠČO, L. VETEŠNÍK, K. HALAČKA, I. PAPOUŠEK: Genetic diversity of Misgurnus fossilis populations from the Czech Republic and Slovakia, Folia zoologica 57 (2008) 90-99.

J. MENDEL, S. LUSK, E. D. VASIL'EVA, V. P. VASIL'EV, V. LUSKOVÁ, F. G. EKMEKCI, F. ERK'KAN, A. RUCHIN, J. KOŠČO, L. VETEŠNÍK, K. HALAČKA, R. ŠANDA, A. N. PASHKOV, S. I. RESHETNIKOV: Molecular phylogeny of the genus Gobio Cuvier, 1816 (Teleostei: Cyprinidae) and its contribution to taxonomy, Molecular Phylogenetics and Evolution 47 (2008) 1061-1075.

J. MENDEL, S. LUSK, J. KOŠČO, L. VETEŠNÍK, K. HALAČKA, I. PAPOUŠEK: Genetic diversity of Misgurnus fossilis populations from the Czech Republic and Slovakia$$faut. Jan Mendel, Stanislav Lusk, J. Koščo, Lukáš Vetešník, Karel Halačka, Ivo Papoušek, Folia zoologica 57 (2008) 90-99.

I. PAPOUŠEK, V. LUSKOVÁ, J. KOŠČO, S. LUSK, K. HALAČKA, M. POVŽ, S. ŠUMER: Genetic diversity of Cobitis spp. (Cypriniformes: Cobitidae) from different drainage areas, Folia zoologica 57 (2008) 83-89.

I. PAPOUŠEK, L. VETEŠNÍK, K. HALAČKA, V. LUSKOVÁ, M. HUMPL, J. MENDEL: Identification of natural hybrids of gibel carp Carassius auratus gibelio (Bloch) and crucian carp Carassius carassius (L.) from lower Dyje River floodplain (Czech Republic), Journal of Fish Biology 72 (2008) 1230-1235.

I. PAPOUŠEK, V. LUSKOVÁ, J. KOŠČO, S. LUSK, K. HALAČKA, M. POVŽ, S. ŠUMER: Genetic diversity of Cobitis spp. (Cypriniformes: Cobitidae) from different drainage areas$$faut. Ivo Papoušek, Věra Lusková, J. Koščo, Stanislav Lusk, Karel Halačka, M. Povž, S. Šumer, Folia zoologica 57 (2008) 83-89.

2007

K. HALAČKA, L. VETEŠNÍK, S. LUSK, J. MENDEL, I. PAPOUŠEK: The X1X1X2X2/X1X2Y multiple sex chromosome system in the Zingel zingel (Pisces: Perciformes) from the Morava River (Czech Republic), Caryologia 60 (2007) 222-225.

J. KOŠČO, S. LUSK, K. HALAČKA, L. PEKÁRIK, L. KOŠUTHOVÁ: Výskyt chránených a invázných druhov rýb v povodí Ipl’a, Natura Carpatica 48 (2007) 141-152.

L. VETEŠNÍK, I. PAPOUŠEK, K. HALAČKA, V. LUSKOVÁ, J. MENDEL: Morphometric and genetic analysis of the Carassius auratus complex from an artificial wetland in Morava River floodplain, Czech Republic, Fisheries Science 73 (2007) 817-822.

2006

L. VETEŠNÍK, K. HALAČKA, V. LUSKOVÁ, S. LUSK: Erythrocyte profile of diploid and triploid silver crucian carp (Carassius auratus), Acta veterinaria Brno 75 (2006) 203-207.

2005

J. KOŠČO, S. LUSK, K. HALAČKA, V. LUSKOVÁ, P. KOŠUTH: Distribution of species of the genus Gobio in the Tisza River drainage area, Slovakia, Folia zoologica 54 (2005) 65-72.

B. LOJKÁSEK, S. LUSK, K. HALAČKA, V. LUSKOVÁ, P. DROZD: The impact of the extreme floods in July 1997 on the ichthyocenosis of the Oder Catchment area (Czech Republic), Hydrobiologia 548 (2005) 11-22.

S. LUSK, V. LUSKOVÁ, K. HALAČKA, V. ŠLECHTOVÁ, V. ŠLECHTA: Characteristics of the remnant Vimba vimba population in the upper part of the Dyje River, Folia zoologica 54 (2005) 389-404.

S. LUSK, K. HALAČKA, V. LUSKOVÁ, V. HORÁK: Distribution of Gobio species in the Czech Republic, Folia zoologica 54 (2005) 56-64.

J. MENDEL, V. LUSKOVÁ, K. HALAČKA, S. LUSK, L. VETEŠNÍK: Genetic diversity of Gobio gobio populations in the Czech Republic and Slovakia, based on RAPD markers, Folia zoologica 54 (2005) 13-24.

V. ŠLECHTOVÁ, V. LUSKOVÁ, V. ŠLECHTA, K. HALAČKA, S. LUSK, J. KOŠČO: Intraspecific allozyme diversity of Gobio gobio in Czech and Slovak rivers, Folia zoologica 54 (2005) 25-32.

2004

V. HORÁK, S. LUSK, K. HALAČKA, V. LUSKOVÁ: Artificial wetlands - yes or no?, Ecohydrology & Hydrobiology 4 (2004) 119-127.

B. LOJKÁSEK, S. LUSK, K. HALAČKA, V. LUSKOVÁ: Fish communities in the Poodří Protected Landscape Area (the Odra River basin), Czech Journal of Animal Science 49 (2004) 121-130.

S. LUSK, K. HALAČKA, V. LUSKOVÁ, L. VETEŠNÍK: Re-occurrence of Zingel streber (Teleostei: Pisces) in the Czech Republic, Folia zoologica 53 (2004) 417-422.

S. LUSK, P. HARTVICH, K. HALAČKA, V. LUSKOVÁ, M. HOLUB: Impact of extreme floods on fishes in rivers and their floodplains, Ecohydrology & Hydrobiology 4 (2004) 173-181.

S. LUSK, J. KOŠČO, V. LUSKOVÁ, K. HALAČKA, P. KOŠUTH: Alien fish species in the floodplains of the Dyje and the Bodrog rivers, Ecohydrology & Hydrobiology 4 (2004) 199-205.

V. LUSKOVÁ, K. HALAČKA, L. VETEŠNÍK, S. LUSK: Changes of ploidy and sexuality status of "Carassius auratus" populations in the drainage area of the River Dyje (Czech Republic), Ecohydrology & Hydrobiology 4 (2004) 165-171.

V. LUSKOVÁ, J. KOŠČO, K. HALAČKA, I. STRÁŇAI, S. LUSK, M. FLAJŠHANS: Status of populations of the genus Cobitis in Slovakia, Biologia 59 (2004) 621-626.

L. VETEŠNÍK, S. LUSK, K. HALAČKA, P. SPURNÝ: Morphometric characteristics and growth of Carassius auratus in the lower part of the River Dyje (Czech Republic), Ecohydrology & Hydrobiology 4 (2004) 215-221.


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HOME NEWS AND PRESS RELEASE STRUCTURE OF IVB BOARD OF INSTITUTE AND SUPERVISORY BOARD RESEARCH DIRECTIONS AND PROJECTS STAFF PUBLICATIONS LIBRARY BIENNIAL REPORT FOLIA ZOOLOGICA CONFERENCE LECTURE HALL	Ing. Karel Halačka, CSc. Position: full-time researcher Research topics: ichtyology Department: Working place Brno Phone: +420 543 422 532 E-mail: halackaivb.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. Finished projects Fish biodiversity in the Morava and Dyje confluence area – supporting and stabilization of rare and endangered species populations Population and genetic structure of brown trout and grayling as groundwork for efficient management of fisheries in salmonid waters 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 2014 T. VÍTEK, K. HALAČKA, E. BARTOŇOVÁ-MAREŠOVÁ, L. VETEŠNÍK, P. SPURNÝ: 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 30 (2014) 102-108. 2013 L. VETEŠNÍK, K. HALAČKA, A. ŠIMKOVÁ: 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 39 (2013) 171-180. 2012 K. HALAČKA, T. VÍTEK, L. VETEŠNÍK, P. SPURNÝ: Epidermis structure and blood parameter differences between sculpin Cottus gobio and Siberian sculpin Cottus poecilopus from the Morava watershed, Folia zoologica 61 (2012) 9-16. J. MENDEL, I. PAPOUŠEK, E. MAREŠOVÁ, L. VETEŠNÍK, K. HALAČKA, M. NOWAK, D. ČÍŽKOVÁ: Permanent Genetic Resources added to Molecular Ecology Resources Database 1 April 2012 – 31 May 2012, Molecular Ecology Resources 12 (2012) 972-974. U. SIVKA, K. HALAČKA, S. SUŠNIK BAJEC: Morphological differences in the skin of marble trout Salmo marmoratus and of brown trout Salmo trutta, Folia Histochemica Et Cytobiologica 50 (2012) 255-262. 2011 M. PRCHALOVÁ, P. HORKÝ, O. SLAVÍK, L. VETEŠNÍK, K. HALAČKA: 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 60 (2011) 104-114. 2010 K. HALAČKA, L. VETEŠNÍK, I. PAPOUŠEK, J. MENDEL, A. ŠIMKOVÁ: The epidermal structure of Carassius gibelio: a link with ploidy status in spawning and postspawning periods, Journal of Fish Biology 77 (2010) 2171-2179. K. HALAČKA, L. VETEŠNÍK, J. MENDEL, I. PAPOUŠEK: Can spawning marks on females of the spined loach (Cobitis sp., Teleostei) be caused by scratches from males during mating?, Folia zoologica 59 (2010) 329-331. V. LUSKOVÁ, S. LUSK, K. HALAČKA, L. VETEŠNÍK: Carassius auratus gibelio—the most successful invasive fish in waters of the Czech Republic, Russian Journal of Biological Invasions 1 (2010) 176-180. 2009 L. VETEŠNÍK, K. HALAČKA, I. PAPOUŠEK, J. MENDEL, A. ŠIMKOVÁ: The first record of a natural hybrid of the roach Rutilus rutilus and nase Chondrostoma nasus in the Danube River Basin, Czech Republic: morphological, karyological and molecular characteristics, Journal of Fish Biology 74 (2009) 1669-1676. L. VETEŠNÍK, K. HALAČKA, I. PAPOUŠEK, J. MENDEL, A. ŠIMKOVÁ: The first record of a natural hybrid of the roach Rutilus rutilus and nase Chondrostoma nasus in the Danube River Basin, Czech Republic: morphological, karyological and molecular characteristics$$faut. Lukáš Vetešník, Karel Halačka, Ivo Papoušek, Jan Mendel, A. Šimková, Journal of Fish Biology 74 (2009) 1669-1676. 2008 E. BARTOŇOVÁ, I. PAPOUŠEK, V. LUSKOVÁ, J. KOŠČO, S. LUSK, K. HALAČKA, M. ŠVÁTORA, L. VETEŠNÍK: Genetic diversity and taxonomy of Sabanejewia balcanica (Osteichthyes: Cobitidae) in the waters of the Czech Republic and Slovakia, Folia zoologica 57 (2008) 60-70. E. BARTOŇOVÁ, I. PAPOUŠEK, V. LUSKOVÁ, J. KOŠČO, S. LUSK, K. HALAČKA, M. ŠVÁTORA, L. VETEŠNÍK: Genetic diversity and taxonomy of Sabanejewia balcanica (Osteichthyes: Cobitidae) in the waters of the Czech Republic and Slovakia$$faut. Eva Bartoňová, Ivo Papoušek, Věra Lusková, J. Koščo, Stanislav Lusk, Karel Halačka, M. Švátora, Lukáš Vetešník, Folia zoologica 57 (2008) 60-70. M. FLAJŠHANS, M. RODINA, K. HALAČKA, L. VETEŠNÍK, D. GELA, V. LUSKOVÁ, S. LUSK: Charakteristika spermatu polyploidního karase stříbřitého, Carassius gibelio, Bulletin VÚRH Vodňany 44 (2008) 78-81. M. FLAJŠHANS, M. RODINA, K. HALAČKA, L. VETEŠNÍK, D. GELA, V. LUSKOVÁ, S. LUSK: Characteristics of sperm of polyploid Prussian carp Carassius gibelio, Journal of Fish Biology 73 (2008) 323-328. J. MENDEL, S. LUSK, J. KOŠČO, L. VETEŠNÍK, K. HALAČKA, I. PAPOUŠEK: Genetic diversity of Misgurnus fossilis populations from the Czech Republic and Slovakia, Folia zoologica 57 (2008) 90-99. J. MENDEL, S. LUSK, E. D. VASIL'EVA, V. P. VASIL'EV, V. LUSKOVÁ, F. G. EKMEKCI, F. ERK'KAN, A. RUCHIN, J. KOŠČO, L. VETEŠNÍK, K. HALAČKA, R. ŠANDA, A. N. PASHKOV, S. I. RESHETNIKOV: Molecular phylogeny of the genus Gobio Cuvier, 1816 (Teleostei: Cyprinidae) and its contribution to taxonomy, Molecular Phylogenetics and Evolution 47 (2008) 1061-1075. J. MENDEL, S. LUSK, J. KOŠČO, L. VETEŠNÍK, K. HALAČKA, I. PAPOUŠEK: Genetic diversity of Misgurnus fossilis populations from the Czech Republic and Slovakia$$faut. Jan Mendel, Stanislav Lusk, J. Koščo, Lukáš Vetešník, Karel Halačka, Ivo Papoušek, Folia zoologica 57 (2008) 90-99. I. PAPOUŠEK, V. LUSKOVÁ, J. KOŠČO, S. LUSK, K. HALAČKA, M. POVŽ, S. ŠUMER: Genetic diversity of Cobitis spp. (Cypriniformes: Cobitidae) from different drainage areas, Folia zoologica 57 (2008) 83-89. I. PAPOUŠEK, L. VETEŠNÍK, K. HALAČKA, V. LUSKOVÁ, M. HUMPL, J. MENDEL: Identification of natural hybrids of gibel carp Carassius auratus gibelio (Bloch) and crucian carp Carassius carassius (L.) from lower Dyje River floodplain (Czech Republic), Journal of Fish Biology 72 (2008) 1230-1235. I. PAPOUŠEK, V. LUSKOVÁ, J. KOŠČO, S. LUSK, K. HALAČKA, M. POVŽ, S. ŠUMER: Genetic diversity of Cobitis spp. (Cypriniformes: Cobitidae) from different drainage areas$$faut. Ivo Papoušek, Věra Lusková, J. Koščo, Stanislav Lusk, Karel Halačka, M. Povž, S. Šumer, Folia zoologica 57 (2008) 83-89. 2007 K. HALAČKA, L. VETEŠNÍK, S. LUSK, J. MENDEL, I. PAPOUŠEK: The X1X1X2X2/X1X2Y multiple sex chromosome system in the Zingel zingel (Pisces: Perciformes) from the Morava River (Czech Republic), Caryologia 60 (2007) 222-225. J. KOŠČO, S. LUSK, K. HALAČKA, L. PEKÁRIK, L. KOŠUTHOVÁ: Výskyt chránených a invázných druhov rýb v povodí Ipl’a, Natura Carpatica 48 (2007) 141-152. L. VETEŠNÍK, I. PAPOUŠEK, K. HALAČKA, V. LUSKOVÁ, J. MENDEL: Morphometric and genetic analysis of the Carassius auratus complex from an artificial wetland in Morava River floodplain, Czech Republic, Fisheries Science 73 (2007) 817-822. 2006 L. VETEŠNÍK, K. HALAČKA, V. LUSKOVÁ, S. LUSK: Erythrocyte profile of diploid and triploid silver crucian carp (Carassius auratus), Acta veterinaria Brno 75 (2006) 203-207. 2005 J. KOŠČO, S. LUSK, K. HALAČKA, V. LUSKOVÁ, P. KOŠUTH: Distribution of species of the genus Gobio in the Tisza River drainage area, Slovakia, Folia zoologica 54 (2005) 65-72. B. LOJKÁSEK, S. LUSK, K. HALAČKA, V. LUSKOVÁ, P. DROZD: The impact of the extreme floods in July 1997 on the ichthyocenosis of the Oder Catchment area (Czech Republic), Hydrobiologia 548 (2005) 11-22. S. LUSK, V. LUSKOVÁ, K. HALAČKA, V. ŠLECHTOVÁ, V. ŠLECHTA: Characteristics of the remnant Vimba vimba population in the upper part of the Dyje River, Folia zoologica 54 (2005) 389-404. S. LUSK, K. HALAČKA, V. LUSKOVÁ, V. HORÁK: Distribution of Gobio species in the Czech Republic, Folia zoologica 54 (2005) 56-64. J. MENDEL, V. LUSKOVÁ, K. HALAČKA, S. LUSK, L. VETEŠNÍK: Genetic diversity of Gobio gobio populations in the Czech Republic and Slovakia, based on RAPD markers, Folia zoologica 54 (2005) 13-24. V. ŠLECHTOVÁ, V. LUSKOVÁ, V. ŠLECHTA, K. HALAČKA, S. LUSK, J. KOŠČO: Intraspecific allozyme diversity of Gobio gobio in Czech and Slovak rivers, Folia zoologica 54 (2005) 25-32. 2004 V. HORÁK, S. LUSK, K. HALAČKA, V. LUSKOVÁ: Artificial wetlands - yes or no?, Ecohydrology & Hydrobiology 4 (2004) 119-127. B. LOJKÁSEK, S. LUSK, K. HALAČKA, V. LUSKOVÁ: Fish communities in the Poodří Protected Landscape Area (the Odra River basin), Czech Journal of Animal Science 49 (2004) 121-130. S. LUSK, K. HALAČKA, V. LUSKOVÁ, L. VETEŠNÍK: Re-occurrence of Zingel streber (Teleostei: Pisces) in the Czech Republic, Folia zoologica 53 (2004) 417-422. S. LUSK, P. HARTVICH, K. HALAČKA, V. LUSKOVÁ, M. HOLUB: Impact of extreme floods on fishes in rivers and their floodplains, Ecohydrology & Hydrobiology 4 (2004) 173-181. S. LUSK, J. KOŠČO, V. LUSKOVÁ, K. HALAČKA, P. KOŠUTH: Alien fish species in the floodplains of the Dyje and the Bodrog rivers, Ecohydrology & Hydrobiology 4 (2004) 199-205. V. LUSKOVÁ, K. HALAČKA, L. VETEŠNÍK, S. LUSK: Changes of ploidy and sexuality status of "Carassius auratus" populations in the drainage area of the River Dyje (Czech Republic), Ecohydrology & Hydrobiology 4 (2004) 165-171. V. LUSKOVÁ, J. KOŠČO, K. HALAČKA, I. STRÁŇAI, S. LUSK, M. FLAJŠHANS: Status of populations of the genus Cobitis in Slovakia, Biologia 59 (2004) 621-626. L. VETEŠNÍK, S. LUSK, K. HALAČKA, P. SPURNÝ: Morphometric characteristics and growth of Carassius auratus in the lower part of the River Dyje (Czech Republic), Ecohydrology & Hydrobiology 4 (2004) 215-221.