- Alette A.M. Langenhoff (1)
- Thomas B.P. Oldenburg (1)
- Albertinka J. Murk (1)
- Leo J.L.D. Griensven Van (1)
- Leo J.L.D. Griensven van (1)
- Nada Lakic (1)
- Edwin M. Foekema (1)
- Jagoš R. Radović (1)
- Milena Radaković (1)
- Ivica Radovic (1)
- Dejan Radović (1)
- Shokouh Rahsepar (1)
- Justine S. Eenennaam Van (1)
- Predrag Simeunovic (1)
- Marina Sokovic (1)
- Marina Soković (1)
- Zoran Stanimirovic (1)
- Zoran Stanimirović (1)
- Jevrosima Stevanovic (1)
- Jevrosima Stevanović (1)
- Jessica Wonink (1)
The effect of agaricus brasiliensis extract supplementation on honey bee colonies
Stevanovic, Jevrosima ; Stanimirovic, Zoran ; Simeunovic, Predrag ; Lakic, Nada ; Radovic, Ivica ; Sokovic, Marina ; Griensven, Leo J.L.D. van - \ 2018
Anais da Academia Brasileira de Ciencias 90 (2018)1. - ISSN 0001-3765 - p. 219 - 229.
Apis mellifera - Colony strength - Medicinal mushroom ‘Cogumelo do Sol’ - Natural-based supplement
This study was done to discover any beneficial effect of a medicinal mushroom Agaricus brasiliensis extract on the honey bee. Firstly, a laboratory experiment was conducted on 640 bees reared in 32 singleuse plastic rearing cups. A. brasiliensis extract proved safe in all doses tested (50, 100 and 150 mg/kg/ day) irrespective of feeding mode (sugar syrup or candy). Secondly, a three-year field experiment was conducted on 26 colonies treated with a single dose of A. brasiliensis extract (100 mg/kg/day) added to syrup. Each year the colonies were treated once in autumn and twice in spring. The treatments significantly increased colony strength parameters: brood rearing improvement and adult population growth were noticed more often than the increase in honey production and pollen reserves. These positive effects were mainly observed in April. In conclusion, A. brasiliensis extract is safe for the bees and helps maintaining strong colonies, especially in spring.
Marine snow increases the adverse effects of oil on benthic invertebrates
Eenennaam, Justine S. Van; Rahsepar, Shokouh ; Radović, Jagoš R. ; Oldenburg, Thomas B.P. ; Wonink, Jessica ; Langenhoff, Alette A.M. ; Murk, Albertinka J. ; Foekema, Edwin M. - \ 2018
Marine Pollution Bulletin 126 (2018). - ISSN 0025-326X - p. 339 - 348.
Benthic invertebrates - Marine snow - MOSSFA - Oil toxicity - Oil spill
After the Deepwater Horizon oil spill, a MOSSFA (Marine Oil Snow Sedimentation and Flocculent Accumulation) event took place, transporting an estimated 14% of total released oil to the sediment, and smothering parts of the benthic ecosystem. This microcosm study describes the effects of oiled artificial marine snow on benthic macroinvertebrates. Corophium volutator survival was reduced by 80% in oil-contaminated snow. Hydrobia ulvae survival was reduced by 40% in oil-contaminated snow, possibly due to consumption of oiled snow. Macoma
balthica was sensitive to marine snow, addition of oil slightly decreased survival. This study reveals trait-dependent sensitivity to oil with or without marine snow. The main drivers for organismal response to marine snow and oil are motility, sensitivity to hypoxia and oil toxicity, and feeding habits. Adverse effects of MOSSFA events on benthos will have consequence for the benthic-pelagic habitat and food chain, and should receive more attention in oil spill management.
Evaluation of the antigenotoxic effects of the royal sun mushroom, agaricus brasiliensis (Higher basidiomycetes) in human lymphocytes treated with thymol in the comet assay
Radaković, Milena ; Stevanović, Jevrosima ; Soković, Marina ; Radović, Dejan ; Griensven, Leo J.L.D. Van; Stanimirović, Zoran - \ 2015
International Journal of Medicinal Mushrooms 17 (2015)4. - ISSN 1521-9437 - p. 321 - 330.
Agaricus brasiliensis - Comet assay - Human lymphocytes - Medicinal mushrooms - Quercetin - Thymol
The aim of this investigation was to evaluate the possible protective activity of Agaricus brasiliensis (=A. blazei sensu Murrill) ethanol extract against thymol-induced DNA damage in human lymphocytes. Before we studied the possible interaction of thymol and A. brasiliensis extract, each component was tested in the comet assay. Thymol significantly increased DNA damage in human lymphocytes at higher concentrations (20, 50, 100, 150, and 200 μg/mL), whereas no genotoxic effect of A. brasiliensis ethanol extract was observed. In simultaneous treatment with thymol (200 μg/mL) and A. brasiliensis ethanol extract (50, 100, 150, and 200 μg/mL), the latter failed to reduce a thymol-induced DNA damaging effect regardless of the applied concentrations. To confirm that thymol induces DNA damage via reactive oxygen species, we performed cotreatment with quercetin. Cotreatment with quercetin (100 and 500 μmol/L) significantly reduced DNA damage caused by thymol (200 μg/mL), indicating that thymol exhibits genotoxicity mainly through induction of reactive oxygen species.