Toxic effect of fluorescence pigment on zebra fish (Danio rerio)
Poštulková, E.; Mareš, J.; Halačka, Karel; Kopp, R.
2016 - English The aim of the study was to determine the toxic effects of organic pigments Alizarin Red S and Alizarin Complexone on zebra fish (Danio rerio). For short-term acute toxicity tests on zebra fish concentration of 150; 300 and 600 mg/L were chosen for both dyes. Toxic effect of dyes was observed even in the variant with 10 g/L of sodium chloride. Addition of sodium chloride increases the deposition of dyes in the bone structures of the fish. LC50 values were analyzed graphically by using probit analysis. There was no mortality during the acute toxicity test with Alizarin Red S even at the highest concentration. Toxicity value (72hLC50) for zebra fish with a combination of Alizarin Red S + 10 g/L of sodium chloride is 546.42 mg/L. Mortality for Alizarin Complexone was 100% in 24 hours at\nconcentrations of 300 and 600 mg/L, with concentrations of 150 mg/L there was no mortality. In Alizarin Complexone supplemented with 10 g/L of sodium chloride was 100% mortality at all\nconcentrations up to 72 hours. Keywords: Alizarin Red S; Alizarin Complexone; LC50; fish; marking Fulltext is available at external website. Toxic effect of fluorescence pigment on zebra fish (Danio rerio)

The aim of the study was to determine the toxic effects of organic pigments Alizarin Red S and Alizarin Complexone on zebra fish (Danio rerio). For short-term acute toxicity tests on zebra fish ...

Poštulková, E.; Mareš, J.; Halačka, Karel; Kopp, R.
Ústav biologie obratlovců, 2016

Resource material for production of salmonid fish in the Czech Republic – past and present. Questionnaire – breeding practice in the Czech Republic\n
Mendel, Jan
2016 - Czech To determine the present state a questionnaire was prepared with 17 questions mapping the following topics: control and knowledge of the lineage bred, outline of the reproduction technologies and alternative genetically improved techniques used, sign and type of the selection made, type of the breeding method involved, knowledge and degree of utilization of genetic tools, knowledge of the latest breeding programs used abroad. Pro zjištění současného stavu byl připraven dotazník s 17 otázkami mapujícími okruhy: kontrola a znalost chované linie, nástin používaných reprodukčních technologií a alternativních geneticky vylepšovaných technik, znak a typ prováděna selekce, typ používané šlechtitelské metody, znalost a míra používání genetických nástrojů, informovanost o nejnovějších chovných programech v zahraničí. Keywords: genetic tools; breeding practice; Salmonidae Fulltext is available at external website. Resource material for production of salmonid fish in the Czech Republic – past and present. Questionnaire – breeding practice in the Czech Republic\n

To determine the present state a questionnaire was prepared with 17 questions mapping the following topics: control and knowledge of the lineage bred, outline of the reproduction technologies and ...

Mendel, Jan
Ústav biologie obratlovců, 2016

Controlled farming – contribution of genetics to the purpose of breeding of salmonid fish
Mendel, Jan
2016 - Czech There was made a short survey of practical utilization of genetics in the following spheres: identification of lineages, species and hybrids, utilization of genomic information in breeding programs and selection procedures, sex determination, searching for important QTLs. Byl učiněn stručný přehled praktického využití genetiky v oblastech: identifikace linií, druhů a hybridů, využití genomické informace v chovných programech a selekčních procedurách, sex determinace, vyhledávání významných QTL. Keywords: genetics; breeding programs; selection; Salmonidae Fulltext is available at external website. Controlled farming – contribution of genetics to the purpose of breeding of salmonid fish

There was made a short survey of practical utilization of genetics in the following spheres: identification of lineages, species and hybrids, utilization of genomic information in breeding programs ...

Mendel, Jan
Ústav biologie obratlovců, 2016

Hodnocení rybářského využití koupacích vod v povodí řeky Moravy s ohledem na možné interakce s vývojem kvality vody
Adámek, Zdeněk; Jurajda, Pavel
2015 - Czech The evaluation of possible relationship between fisheries management and water quality in bathing sites in the Morava River catchment area, as presented on public web pages www.koupacivody. cz, was performed on an example of 24 evaluated waterbodies. On the sites, which belong to the angling grounds, an obvious relationship between the proportion of predatory fish biomass in fish yields (F/C index) and bathing quality of appropriate sites was recorded. Mean F/C values in fish catches, as the most appropriate criterion, amounted to 17.8 and 21.5 in bathing suitable water and bathing suitable water with deteriorated sensory properties, \nrespectively. It seems apparent that the bathing water quality reflects in certain extent the principal characteristics of fisheries management. In carp farming ponds, incorporated legally among bathing sites, this tendency was not so obvious and it seems that not even the intensity of supplementary feeding was the main reason limiting the suitability for bathing. S použitím dostupných údajů o rybářském managementu na celkem 24 koupacích vodách v povodí řeky Moravy bylo provedeno vyhodnocení jeho možného vztahu ke kvalitě vody pro koupání, prezentované na webových stránkách krajských hygienických stanic. Na lokalitách, které jsou rybářskými revíry, je patrný vztah mezi podílem dravých ryb vyjádřeným v biomase vysazovaných i ulovených ryb (F/C index) a zařazením příslušné lokality do jedné z pěti kategorií vhodnosti vody ke koupání (od vody vhodné ke koupání až po vodu ke koupání nebezpečnou). Průměrné hodnoty F/C indexu v úlovcích, jakožto nejvhodnějším kritériu, činily 17,8 pro vody vhodné ke koupání a 21,5 pro vody vhodné ke koupání se zhoršenými smyslově postižitelnými vlastnostmi. Je tedy zřejmé, že kvalita vody s ohledem na její vhodnost ke koupání reflektuje v jistém rozsahu základní charakteristiku rybářského managementu, vyjádřenou zastoupením dravých ryb. V produkčních rybnících, zařazených mezi koupací vody není tento trend tak zjevný. Keywords: fisheries management; bathing sites; angling ground; fishpond; F/C index Available on request at various institutes of the ASCR Hodnocení rybářského využití koupacích vod v povodí řeky Moravy s ohledem na možné interakce s vývojem kvality vody

The evaluation of possible relationship between fisheries management and water quality in bathing sites in the Morava River catchment area, as presented on public web pages www.koupacivody. cz, was ...

Adámek, Zdeněk; Jurajda, Pavel
Ústav biologie obratlovců, 2015

Loach populations on territory of the Czech Republic
Halačka, Karel; Vetešník, Lukáš; Mendel, Jan
2014 - Czech There are currently ongoing molecular genetic analysis specifies the characteristics of loachs in our territory. Monitored are individual populations in terms of their reproductive success and degree of threat. Significant are especially findings remains of the possible genome of C. taenia and C. tanaitica in some populations, whose presence will have to be clarified. Keywords: loachs; Czech Republic Available on request at various institutes of the ASCR Loach populations on territory of the Czech Republic

There are currently ongoing molecular genetic analysis specifies the characteristics of loachs in our territory. Monitored are individual populations in terms of their reproductive success and degree ...

Halačka, Karel; Vetešník, Lukáš; Mendel, Jan
Ústav biologie obratlovců, 2014

Interspecific and seasonal changes in epidermal structure of Carassius gibelio x Cyprinus carpio hybrids
Halačka, Karel; Vetešník, Lukáš
2014 - Czech Morphology of epidermis Carassius gibelio and Cyprinus carpio shows specific differences in dependence on both sexual activity (reduction epidermal thickness in spawning period) and given species (epidermal thickness and prevalance of single types of secretory cells). Epidermis of hybrids shows similar seasonal changes as parental species, its structure was similar to epidermis of C. carpio. Keywords: Carassius gibelio; Cyprinus carpio Available on request at various institutes of the ASCR Interspecific and seasonal changes in epidermal structure of Carassius gibelio x Cyprinus carpio hybrids

Morphology of epidermis Carassius gibelio and Cyprinus carpio shows specific differences in dependence on both sexual activity (reduction epidermal thickness in spawning period) and given species ...

Halačka, Karel; Vetešník, Lukáš
Ústav biologie obratlovců, 2014

Growth of tagged common carp (Cyprius carpio) in selected water reservoirs, Morava River drainage area
Prokeš, Miroslav; Baruš, Vlastimil; Habán, V.; Mareš, J.; Peňáz, Milan; Halačka, Karel; Krejčí, R.; Vetešník, Lukáš
2014 - Czech The project monitoring the growth of tagged two-season-old common carp (K2) being stocked into the selected reservoirs managed by the Moravian Angler Association was initiated in 2001 in the reservoir of Nové Mlýny. Few other reservoirs, namely the Dalešická, Brněnská, Vranovská and Letovická, were then also studied in course of the following period up today. The altitude of investigated reservoirs ranges 171-382 m a.s.l., the flooded area of water bodies 104-1600 hectares. The stocking series in every of reservoirs were performed in the course of subsequent five years and two thousands of tagged carps (K2) were always yearly stocked in every of reservoirs. In total, 50 335 (17.61 inds per hectare) tagged carps have been stocked and 1361 individuals (0.48 inds per hectare) were recaptured and reported by the anglers. The mean recapture rate of tagged fish reached thus 2.70 % (1.02 - 4.74 %). A significant negative relationship was also ascertained of altitude (in m a.s.l.) and growth indices. The maximum growth rate was found in the Novomlýnská reservoir (mean annual weight increment 1725 g). Gradually lower weight increments were found out in the Vranovská reservoir (1064 - 1200 g), Dalešická R. (1050 g), Brněnská R. (1070 g) and Letovická R. (630 g). A similar sequence existed also in growth of other parameters studied, i.e. total length (TL), specific growth rate (SGR), and weight condition expressed by means of the Fulton condition factor (FCF). On the basis of these results, some new, more convenient, rules were suggested for stocking of common carp. Keywords: common carp Available on request at various institutes of the ASCR Growth of tagged common carp (Cyprius carpio) in selected water reservoirs, Morava River drainage area

The project monitoring the growth of tagged two-season-old common carp (K2) being stocked into the selected reservoirs managed by the Moravian Angler Association was initiated in 2001 in the reservoir ...

Prokeš, Miroslav; Baruš, Vlastimil; Habán, V.; Mareš, J.; Peňáz, Milan; Halačka, Karel; Krejčí, R.; Vetešník, Lukáš
Ústav biologie obratlovců, 2014

Application of genetic methods for the detection of deer origin and existence of interspecific hybridization
Krojerová-Prokešová, Jarmila; Barančeková, Miroslava; Koubek, Petr
2014 - Czech Hybridization between native red deer and non-native sika deer is a real threat in the Czech Republic, even though its existence has been questioned for a long time. The main cause of hybrids’ non-acceptance has been the fact that no reliable methods of their detection exist until recently. However, the application of modern molecular-genetic methods, mainly the analyses of microsatellite loci polymorphism, helps us to detect the proportion of hybrid individuals in wild populations and to establish necessary management measures for their elimination. Most importantly, the usage of molecular-genetic methods enables to detect hybrid individuals of next generations that bear no visible phenotypic signs of previous hybridisation. Mezidruhová hybridizaci mezi nepůvodním jelenem sika a původním jelenem lesním představuje v České republice vážný problém, i když o její existenci se dlouho pochybovalo. Hlavní příčinou nedůvěry v existenci kříženců byl zejména fakt, že až donedávna neexistovala žádná zcela spolehlivá metoda jejich detekce. Aplikování molekulárně-genetických metod, především využití mikrosatelitových markerů, by nám mělo pomoci určit celkový podíl hybridních jedinců v populaci a stanovit příslušná opatření k jejich eliminaci. Právě využití molekulární genetiky totiž umožňuje odhalit i hybridní jedince dalších generací, kteří již navenek nenesou žádné fenotypové znaky po předcházejícím mezidruhovém křížení. Keywords: red deer; sika deer; cross-breeding; inter-specific hybridization; Czech Republic Available at various institutes of the ASCR Application of genetic methods for the detection of deer origin and existence of interspecific hybridization

Hybridization between native red deer and non-native sika deer is a real threat in the Czech Republic, even though its existence has been questioned for a long time. The main cause of hybrids’ ...

Krojerová-Prokešová, Jarmila; Barančeková, Miroslava; Koubek, Petr
Ústav biologie obratlovců, 2014

Vzpomínka na prof. Ing. Vlastimila Baruše, DrSc
Peňáz, Milan; Spurný, P.; Prokeš, Miroslav
2014 - Czech Keywords: Obituary Available on request at various institutes of the ASCR Vzpomínka na prof. Ing. Vlastimila Baruše, DrSc

Peňáz, Milan; Spurný, P.; Prokeš, Miroslav
Ústav biologie obratlovců, 2014

The structure of zooplankton in diet of common bream (Abramis brama) during biomanipulation
Zapletal, T.; Špaček, J.; Jurajda, Pavel; Všetičková, Lucie
2014 - Czech The structure of zooplankton in diet of common bream (Abramis brama) was analysed in the Hamry water supply reservoir during the period 2011-2014. Fish were captured by gill netting, beach seining and electrofishing in the littoral part of reservoir. Minimum twenty specimens of each size group were taken for analysis on each sampling occasion. Zooplankton in the diet of adult bream SL 210-315 mm and subadult SL 124-186 mm made recedent proportion. Juvenile bream (0+) SL 18-51 mm consumed zooplankton only. Daphnia galeata was dominant there. We found that decrease of cladoceran communities in the water supply reservoir might to cohere (related) with this specific feeding activity of bream's fry and the feeding competition of bream's and perch's fry in it's habitats. Keywords: common bream; biomanipulation Available on request at various institutes of the ASCR The structure of zooplankton in diet of common bream (Abramis brama) during biomanipulation

The structure of zooplankton in diet of common bream (Abramis brama) was analysed in the Hamry water supply reservoir during the period 2011-2014. Fish were captured by gill netting, beach seining and ...

Zapletal, T.; Špaček, J.; Jurajda, Pavel; Všetičková, Lucie
Ústav biologie obratlovců, 2014