Feiner, M; Laforsch, C; Letzel, T; Geist, J: Sublethal effects of the beta-blocker sotalol at environmentally relevant concentrations on the New Zealand mudsnail Potamopyrgus antipodarum, Environmental Toxicology and Chemistry, 33(11), 2510-2515 (2014), online: 2014-07-31, doi:10.1002/etc.2699
Abstract:
Monitoring sublethal effects of pharmaceuticals on nontarget species in aquatic environments has become an important topic in ecotoxicology, yet few studies have been conducted concerning the effects of beta-blockers on aquatic organisms. The present study investigated the effects of the beta-blocker sotalol (SOT) at 3 environmentally relevant concentrations on life-history traits of the New Zealand mudsnail Potamopyrgus antipodarum. Based on the pharmacodynamic properties of SOT, the authors hypothesized reduced numbers of embryos in the brood pouches, decelerated growth of adult snails, and smaller size of neonates, but no effect on mortality rates of adults. Contrary to the hypothesis, the total number of embryos was significantly higher after 56 d of exposure at nominal concentrations of 0.05mg/L and 1.0mg/L by 107% and 73%, respectively. No differences in embryo numbers were observed at earlier time-points. Therefore, the mode of action seems to be an extension of the reproductive period rather than an increase of the embryo production. Furthermore, our results indicate a hormetic dose–response relationship, because no effects were observed at the highest test-concentration (6.5mg/L). Mortality, growth of adult snails, and neonate sizes were not affected by the beta-blocker. Given the strong influence on reproduction, the effects of sublethal concentrations of SOT and other beta-blockers deserve better consideration in ecotoxicological risk assessment.
Upcoming ...


BayCEER Colloquium:
Th. 2020-12-03
An engineered (water) future?
Th. 2020-12-10
Investigating communal pathogen defense and its role in social evolution
Ecological-Botanical Garden:
Th. 2020-12-03
Entfällt: Ökumenische Andacht zum Advent mit dem Swahili Chor Bayreuth (KHG & ESG)
Su. 2020-12-06
Entfällt: Führung nach Anmeldung: Zimt & Mandelkern: Pflanzen in der Weihnachtsbäckerei
Geographisches Kolloquium:
Tu. 2020-12-08
People, pathogens, places: where medical geography meets disease ecology?
BayCEER Blog
13.01.2020
Why Science Communication?
24.05.2019
Stoichiometric controls of C and N cycling
07.05.2019
Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA
16.04.2019
Picky carnivorous plants?
RSS Blog as RSS Feed
Weather research site
Luftdruck (356m): 981.7 hPa
Lufttemperatur: -0.4 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 3.7 km/h
Wind (Max.): 6.5 km/h
Windrichtung: NO

...more
Globalstrahlung: -3 W/m²
Lufttemperatur: -2.1 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 32m): 0.0 km/h

...more
This site makes use of cookies More information