10 000 specimen of asp (Aspius aspius) re-introduced;
To promote the management and preservation of Natura 2000 biotopes in the Alam-Pedja Natura 2000 network area, to guarantee the presence and quality of spawning grounds for Aspius aspius, Cobitis taenia, Misgurnus fossilis and Cottus gobio.
Cryopreservation of sperm from asp Aspius aspius. Progr.
However, the effect of cryoaditive could be species-specific, since there are cases in which they do not fulfill the desired cryoprotective function; for example, good results were obtained with egg hen yolk in cryopreservation of brown trout (Piironen, 1993) and rainbow trout (Wheeler & Thorgaard, 1991) sperm, but not in cyprinid Aspius aspius sperm (Babiak et al., 1998).
Colonisation of new sites and population increase of the hermit beetle (Osmoderma eremita), beetle (Graphoderus bilineatus), Mudminnow (Umbra krameri) and Asp (Aspius aspius
In addition, the density and biomass of predators, such as pike Esox lucius, zander Sander lucioperca, European catfish Silurus glanis or asp Aspius aspius
, is often artificially increased in order to reduce numbers of small planktivorous fish (Lathrop et al.
Expected results: Purchase of 2.8 ha of agricultural and forestry land; Some 1 650 m of restored, structured river banks, 1 500 m river banks with removed bank enforcement, 3 050 m new gravel and sand banks, and 4 490 m structured river banks; An increase of the populations of huchen (Hucho hucho), asp (Aspius aspius
), streber (Zingel s
Mamcarz, "Slaughter yield, proximate fatty acid composition and sensory properties of rapfen (Aspius aspius
L) with tissue of bream (Abramis brama L) and pike (Esox lucius L)," Journal of Food Composition and Analysis, vol.