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Current ichthyofauna of Laka Lake and connected streams
Blabolil, Petr ; Draštík, Vladislav ; Kočvara, Luboš ; Kolařík, Tomáš ; Muška, Milan ; Peterka, Jiří ; Soukalová, Kateřina ; Vrba, Jaroslav
The aim of this study was determination of Lake Laka and connected streams ichthyofauna. The obtained results, including their evaluation, are included in the report.
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Ichthyological survey of the asp spawning stock in the Švihov Reservoir in 2018
Šmejkal, Marek ; Bartoň, Daniel ; Blabolil, Petr ; Kolařík, Tomáš ; Soukalová, Kateřina ; Děd, Vilém ; Šmejkalová, Z. ; Kočvara, Luboš ; de Moraes, Karlos Ribeiro ; Kortan, D. ; Duras, J. ; Kubečka, Jan
The aim of the study was to evaluate the results of the asp population development in relation to the current fishery management and to develop proposals for the management of this predatory species in the future.
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Assessment of asp reproductive population in Švihov Reservoir in 2017
Šmejkal, Marek ; Blabolil, Petr ; Bartoň, Daniel ; Kolařík, T. ; Soukalová, Kateřina ; Děd, Vilém ; Boborová, K. ; Michalička, P. ; Zemanová, Z. ; Kočvara, Luboš ; Duras, J. ; Kubečka, Jan
The aim of the contract was to capture reproducing asp by electrofishing and tag fish individually using individual marking technique (PIT-tags). Estimate of asp reproductive population in the Švihov Reservoir was performed on the basis of mark-recapture methods. Furthermore, the length and weight increments were computed for recaptured asp individuals. Tagged individuals were monitored using passive telemetry systems on the tributary of Švihov Reservoir.
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Assessment of asp reproductive population in Švihov Reservoir in 2016
Šmejkal, Marek ; Blabolil, Petr ; Baran, Roman ; Kočvara, Luboš ; Bartoň, Daniel ; Kolařík, T. ; Prachař, Zdeněk ; Soukalová, Kateřina ; Děd, Vilém ; Vebrová, Lucie ; Vejřík, Lukáš ; Kubečka, Jan
The aim of the contract was to capture reproducing asp by electrofishing and tag fish individually using individual marking technique (PIT-tags). Estimate of asp reproductive population in the Švihov Reservoir was performed on the basis of mark-recapture methods. Furthermore, the length and weight increments were computed for recaptured asp individuals. Tagged individuals were monitored using passive telemetry systems on the tributary of Švihov Reservoir.
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Fish stock assessment of the Petrusplaat Reservoir in 2016, Fish stock assessment of the Honderd en Dertig Reservoir in 2016, Fish stock assessment of the De Gijster Reservoir in 2016
Jůza, Tomáš ; Soukalová, Kateřina ; Kočvara, Luboš ; Prachař, Zdeněk
In 2016, the aim of the complex ichthyological surveys of Petrusplaat, Honderd en Dertig and De Gijster reservoirs was the description of fish community composition and succession with the emphasis put on the abundance and biomass estimates. All important littoral/benthic and pelagic habitats were sampled using the well-established methods (benthic and pelagic gillnets, shore seining and pelagic fry and ichthyoplankton trawling, benthic traps) aiming particularly on the improvement of abundance estimates of gobiid fry.
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Ichthyological surveys of the Nýrsko and Karhov reservoirs and investigations of abundance, age composition and spawning dynamics of asp population in the Želivka Reservoir in 2015.
Vašek, Mojmír ; Soukalová, Kateřina ; Kočvara, Luboš ; Blabolil, Petr ; Baran, Roman ; Frouzová, Jaroslava ; Koliada, Ievgen ; Muška, Milan ; Šmejkal, Marek ; Draštík, Vladislav ; Kolařík, T. ; Prachař, Zdeněk ; Sajdlová, Zuzana ; Vebrová, L. ; Vejřík, Lukáš ; Kubečka, Jan
The species composition and the relative abundance and biomass of fish communities in the Nýrsko and Karhov reservoirs were evaluated by means of standardised multimesh gillnets. The spawning stock of asp in the Želivka Reservoir was individually marked using PIT tags and the density and behaviour of tagged fish at the main spawning grounds were examined through the whole spawning season. The total number of reproducing individuals in the asp population was estimated. The sex-specific length and weight growth rates of adult asp in the Želivka Reservoir were also calculated. \n\n
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