National Repository of Grey Literature 6 records found  Search took 0.02 seconds. 
Goldfish (Carassius auratus) in fish communities inhabiting the lower reaches of the River Dyje
Lusková, Věra ; Halačka, Karel ; Vetešník, Lukáš ; Lusk, Stanislav
The species Carassius auratus established stable and numerous populations in the area of lower reach of the Dyje River. One cut river arm was studied in this area. Number of individuals longer then 100 mm reached 5.6 thousand while biomass was 939 kg per 1 ha of water area. At present changes in sex and ploidy are in progress within local population. Besides 3n females occurred originally, 2n males and females were found.
"Ichthyological" territories in the NATURA 2000 system in the Morava river drainage area
Lusk, Stanislav ; Lusková, Věra ; Dušek, M.
In the study presents proposals for establishment of SAC within the river Morava catchment. These areas are drawn for fish and lamprey species listed in the attachment II Directive 92/43/EES.
Several biological characteristic of Carassius auratus
Vetešník, Lukáš ; Lusk, Stanislav ; Spurný, P.
Based on realized research it was found that the present population of Carassius auratus occurred in the lower reach of the river Dyje does not have any significant differences in plastic and meristic characters when compared to the individuals occupying this area 27 years ago. The growth depends on the living conditions of studied individuals. The growth of 2n males was significantly slower comparing to 3n females.
Polyploidy in Carassius auratus in the lower reaches of the River Dyje - determination using the size of erythrocyte nuclei
Halačka, Karel ; Lusková, Věra
Polyploidy in goldfish (Carassius auratus) from four different localities on the lower reaches of the River Dyje was determined using the size of erythrocyte nuclei. On the basis of the nuclei area, its perimeter and its major axis, diploid, triploid
The proposal of the pSCI sites for fishes and lampreys for system of NATURA 2000 in the Czech Republic
Dušek, J. ; Dušek, M. ; Lusk, Stanislav
For 15 fish and 1 lamprey species, the territory of potential Site of Community Interest (pSCI) has been limited and proposed (Annex to the Council Directive No. 92/43/EEC). In total, 80 pSCI localities for fish and lampreys in the continental area and 7 pSCI localities in the pannonic area in the Czech Republic were selected.

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