| Attributes | Values |
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| rdf:type
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| Description
| - V mělkých subarktických jezerech jsou perloočky a jejich potrava (řasy) často exponovány slunečním UV záření. Bylo zjištěno, že přímá expozice UVR může způsobit subletální poškození trávicího systému perlooček. To vede k hypotéze, že v důsledku expozice je perloočka vystavena podobné situaci jako je hladovění. V kontrolovaných experimentech jsme sledovali nepřímé vlivy UVR exponované řasové potravy na Daphnia pulex exponované také UVR. Testovali jsme ovlivnění příjmu potravy, transport potravy a enzymatického trávení. Jak bylo předpokládáno, kombinace UVR exponované potravy a perlooček vyvolává nejtěžší poškození střeva a zvýšení mortality. Některé z těchto efektů byly podobné hladovění. Celková aktivita trávicích enzymů (amylázy a celulázy) byla poněkud redukována u UVR exponovaných jedinců D. pulex, ale funkce enzymů není vážně narušena, jak je vidno ze vzestupného trendu protein-specifické aktivity. (cs)
- In shallow subarctic ponds Daphnia and their algal food are often exposed to solar ultraviolet radiation (UVR). It was previously demonstrated that direct exposure of Daphnia to UVR may result in sublethal damage to Daphnia's intestinal system. This led to the hypothesis that, as consequences of such exposures, Daphnia may be experiencing a situation similar to starvation. We examined, in controlled experiments, the indirect effect of UVR-treated food algae on Daphnia pulex which, themselves, were also exposed to UVR. We specifically tested whether exposure of D. pulex to solar UVR affects food transport and enzymatic digestion. As expected, the UVR-exposed food and UVR-treated Daphnia combination produced the strongest effects on intestinal damage, and mortality. Some of these effects, as well as the grazer-related effects, were similar to those observed during starvation.
- In shallow subarctic ponds Daphnia and their algal food are often exposed to solar ultraviolet radiation (UVR). It was previously demonstrated that direct exposure of Daphnia to UVR may result in sublethal damage to Daphnia's intestinal system. This led to the hypothesis that, as consequences of such exposures, Daphnia may be experiencing a situation similar to starvation. We examined, in controlled experiments, the indirect effect of UVR-treated food algae on Daphnia pulex which, themselves, were also exposed to UVR. We specifically tested whether exposure of D. pulex to solar UVR affects food transport and enzymatic digestion. As expected, the UVR-exposed food and UVR-treated Daphnia combination produced the strongest effects on intestinal damage, and mortality. Some of these effects, as well as the grazer-related effects, were similar to those observed during starvation. (en)
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| Title
| - Food chain effects of sublethal ultraviolet radiation on subarctic Daphnia pulex - a field and laboratory study
- Food chain effects of sublethal ultraviolet radiation on subarctic Daphnia pulex - a field and laboratory study (en)
- Vliv ultrafialového záření na potravní řetězec subarktické Daphnia pulex - terénní a laboratorní studie (cs)
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| skos:prefLabel
| - Food chain effects of sublethal ultraviolet radiation on subarctic Daphnia pulex - a field and laboratory study
- Food chain effects of sublethal ultraviolet radiation on subarctic Daphnia pulex - a field and laboratory study (en)
- Vliv ultrafialového záření na potravní řetězec subarktické Daphnia pulex - terénní a laboratorní studie (cs)
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| skos:notation
| - RIV/60077344:_____/06:00049395!RIV07-AV0-60077344
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60077344:_____/06:00049395
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - UV radiation; Daphnia; enzymes (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - DE - Spolková republika Německo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Šustr, Vladimír
- Arts, M. T.
- Zellmer, I. D.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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