Informace o publikaci
Environmental quality and natural food performance at feeding sites in a carp (Cyprinus carpio) pond
| Autoři | |
|---|---|
| Rok publikování | 2016 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Aquaculture International |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://link.springer.com/article/10.1007/s10499-016-0048-3 |
| Doi | http://dx.doi.org/10.1007/s10499-016-0048-3 |
| Obor | Rybářství |
| Popis | Just like other domesticated animals, common carp (Cyprinus carpio) are able to learn where food can easily be obtained. As a result, carp in semi-intensive polyculture ponds could conceivably restrict their main activity centres to supplemental feeding sites, leading to lowered exploitation of natural food resources (zooplankton and macrozoobenthos) and localised degradation of environmental conditions. At two semi-intensive ponds in southern Moravia (Czech Republic), areas around feeding sites displayed signi?cantly reduced oxygen concentration and saturation (mainly p\0.001). Likewise, temperature, pH and transparency also decreased signi?cantly at feeding sites (mainly p\0.05), while turbidity increased. While there was no signi?cant difference in zooplankton biovolume at feeding and non-feeding sites, zoobenthos density and biomass were signi?cantly lower at feeding sites (mainly p\0.01). The feeding behaviour of carp, therefore, led to signi?cant changes in both abiotic and biotic conditions at supplemental feeding sites. |