. "[9B0A21CFA51A]" . "310506" . . . . . "RIV/60077344:_____/09:00338890!RIV10-AV0-60077344" . . . "RIV/60077344:_____/09:00338890" . "Differentiation between activity of digestive enzymes of Brachionus calyciflorus and extracellular enzymes of its epizooic bacteria"@en . "Journal of Limnology" . "\u0160trojsov\u00E1, Martina" . "4"^^ . . . "68" . "1"^^ . . . "Differentiation between activity of digestive enzymes of Brachionus calyciflorus and extracellular enzymes of its epizooic bacteria" . . "Ahlrichs, W. H." . "1129-5767" . "IT - Italsk\u00E1 republika" . "2"^^ . "The rotifer Brachionus calyciflorus was examined by scanning electron microscopy (SEM) for surface-attached, i.e. epizootic, bacteria to ascertain their specific localization and thus find out if we could discern between rotifer and bacterial enzyme activity. The lorica of B. calyciflorus was colonized by one distinct type of bacteria, which originated from the algal culture used for rotifer feeding. The corona, posterior epidermis and foot of all inspected individuals were always without attached bacteria. The density of the attached bacteria was higher with the increasing age of B. calyciflorus. We hypothesize that epizooic bacteria may produce the ectoenzymes phosphatases and beta-N-acetylhexosaminidases on the lorica, but not on the corona of B. calyciflorus. Since enzyme activities of epizooic bacteria may influence the values and interpretation of bulk rotifer enzyme activities, we should take the bacterial contribution into account." . . . . "Z(AV0Z60170517)" . "Differentiation between activity of digestive enzymes of Brachionus calyciflorus and extracellular enzymes of its epizooic bacteria"@en . "rotifers; phosphatase; beta-N-acetylhexosaminidase; enzyme localization"@en . "Differentiation between activity of digestive enzymes of Brachionus calyciflorus and extracellular enzymes of its epizooic bacteria" . "The rotifer Brachionus calyciflorus was examined by scanning electron microscopy (SEM) for surface-attached, i.e. epizootic, bacteria to ascertain their specific localization and thus find out if we could discern between rotifer and bacterial enzyme activity. The lorica of B. calyciflorus was colonized by one distinct type of bacteria, which originated from the algal culture used for rotifer feeding. The corona, posterior epidermis and foot of all inspected individuals were always without attached bacteria. The density of the attached bacteria was higher with the increasing age of B. calyciflorus. We hypothesize that epizooic bacteria may produce the ectoenzymes phosphatases and beta-N-acetylhexosaminidases on the lorica, but not on the corona of B. calyciflorus. Since enzyme activities of epizooic bacteria may influence the values and interpretation of bulk rotifer enzyme activities, we should take the bacterial contribution into account."@en . . "000268778300023" . "2" .