Environmental quality and natural food performance at feeding sites in a carp (Cyprinus carpio) pond

0462477 - ÚBO 2017 RIV NL eng J - Článek v odborném periodiku
Adámek, Z. - Mrkvová, Markéta - Zukal, Jan - Roche, Kevin Francis - Mikl, Libor - Šlapanský, Luděk - Janáč, Michal - Jurajda, Pavel
Environmental quality and natural food performance at feeding sites in a carp (Cyprinus carpio) pond.
Aquaculture International. Roč. 24, č. 6 (2016), s. 1591-1606. ISSN 0967-6120. E-ISSN 1573-143X
Grant CEP: GA ČR(CZ) GBP505/12/G112
Institucionální podpora: RVO:68081766
Klíčová slova: Pond aquaculture * Supplemental feeding * Zooplankton * Macrozoobenthos * Oxygen * Turbidity
Kód oboru RIV: GL - Rybářství
Impakt faktor: 1.095, rok: 2016

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 significantly reduced oxygen concentration and saturation (mainly p\0.001). Likewise, temperature, pH and transparency also decreased significantly at feeding sites (mainly p\0.05), while turbidity increased. While there was no significant difference in zooplankton biovolume at feeding and non-feeding sites, zoobenthos density and biomass were significantly lower at feeding sites (mainly p\0.01). The feeding behaviour of carp, therefore, led to significant changes in both abiotic and biotic conditions at supplemental feeding sites.
Trvalý link: http://hdl.handle.net/11104/0261940