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Diversity and microcystins content of cyanobacteria in fish ponds (South Moravia, Czech Republic) related to fishery management intensity
Kopp, Radovan; Ziková, Andrea; Adamovský, Ondřej; Brabec, T.; Straková, L.; Mareš, J.
2008 - Czech
During the vegetative period of the years 2005-2007 (June--October) we carried out hydrobiological and hydrochemical monitoring of selected ponds inhered in Southern Moravia in relation to different fishery management intensities. Water temperature, dissolved oxygen content, pH, conductivity and water transparency were monitored directly at taking place, N--NH4+, N--NO2-, N--NO3-, P--PO43- content and chlorophyll-a concentration were measured in hydrochemical laboratory. V průběhu vegetačního období let 2005-2007 (červen-září) byl prováděn hydrobiologický monitoring vybraných rybníků jižní Moravy s různou intenzitou rybářského obhospodařování. Sledovány byly základní fyzikálně-chemické parametry (rozpuštěný kyslík, pH, teplota vody, vodivost, průhlednost vody N-NH4+, N-NO2-, N-NO3-, P-PO43- a koncentrace chlorofylu a. V jednotlivých rybnících byly rovněž odebírány vzorky pro taxonomickou analýzu fytoplanktonu a stanovení microcystinů sinic vodního květu.
Keywords:
cyanobacteria; fish stock; microcystins
Fulltext is available at external website.
Diversity and microcystins content of cyanobacteria in fish ponds (South Moravia, Czech Republic) related to fishery management intensity
During the vegetative period of the years 2005-2007 (June--October) we carried out hydrobiological and hydrochemical monitoring of selected ponds inhered in Southern Moravia in relation to different ...
The content of microcystin in the chosen tissues at different fish species
Hlávková, J.; Adamovský, Ondřej; Oravec, M.; Bláha, Luděk; Mareš, J.; Kopp, Radovan; Palíková, M.
2008 - Czech
The aim of this study was to assess quantity of microcystins in muscle and hepatopancreas of different fish species (Cyprinus carpio, Oreochromis niloticus, Sander lucioperca and Esox lucius). Microcystins were detected in liver/hepatopancreas (hundreds of ng per gram of tissue) as in muscles (nanograms per gram of tissue). It seems that acumulation of microcystins in eatable parts of fishes represent only small risk for man. Cílem této studie bylo zhodnotit množství microcystinu ve svalech a hepatopankreatu různých druhů ryb (Cyprinus carpio, Oreochromis niloticus, Sander lucioperca and Esox lucius). Microcystiny byly detekovány zejména v játrech (stovky ng/g tkáně), ale také ve svalech (ng/g tkáně). Akumulace microcystinů v konzumovaných částech ryb představují malé zdravotní riziko pro člověka.
Keywords:
microcystin; fish; tissues
Fulltext is available at external website.
The content of microcystin in the chosen tissues at different fish species
The aim of this study was to assess quantity of microcystins in muscle and hepatopancreas of different fish species (Cyprinus carpio, Oreochromis niloticus, Sander lucioperca and Esox lucius). ...
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