This study presents the effect of cyanobacterium isolated from Bolluk Lake (Konya, Türkiye) which is a saline lake on growth performance Daphnia magna. Isolated cyanobacteria species were identified as Phormidium lucidum according to its 16S rDNA sequences. The effects different conditions including pH (7.18, 8.15, 9.17 and 10.26), light intensity (1200, 2400, 3600 4800 lux), temperature (10, 2...

Plant extract and essential oils are gaining application in aquaculture, but data about their environmental impact limited potential effects on aquatic organisms largely unknown. For this study, ecotoxicity tests were performed under standardized conditions fish feed supplemented with 3 % w/w of a basil supercritical (F1-BEO; substance A), F1-BEO (substance B), without C) three model species di...

Mancozeb and methomyl are active ingredients commonly contained in pesticides applied shallot farming. Surface runoff can carry pesticide residues that enter water bodies affect non-target organisms, such as Daphnia magna. This study evaluated the genotoxicity effects of individual combined mancozeb on DNA damage D. Organisms at 24 h old 48 were exposed to concentrations for obtain LC50-24 valu...

This study presents a series of short-term studies (total duration 48 h) of uptake and depuration of engineered nanoparticles (ENP) in neonate Daphnia magna. Gold nanoparticles (Au NP) were used to study the influence of size, stabilizing agent and feeding on uptake and depuration kinetics and animal body burdens. 10 and 30 nm Au NP with different stabilizing agents [citrate (CIT) and mercaptou...

The production and use of nanoparticles (NP) has steadily increased within the last decade; however, knowledge about risks of NP to human health and ecosystems is still scarce. Common knowledge concerning NP effects on freshwater organisms is largely limited to standard short-term (≤48 h) toxicity tests, which lack both NP fate characterization and an understanding of the mechanisms underlying ...

The effects of aluminum (Al) on sodium (Na) regulation by the freshwater crustacean Daphnia magna were determined. (22)Na influx and outflux experiments were conducted in soft water adjusted to pH 4.5, 5.0, and 6.5 (reference pH) with either ambient (0.02 mg/liter) or high (1.02 mg/liter) concentrations of total Al. The results indicate that Al toxicity was pH dependent. Aluminum increased the ...

The population structure of parasites is central to the ecology and evolution of host-parasite systems. Here, we investigate the population genetics of Pasteuria ramosa, a bacterial parasite of Daphnia. We used natural P. ramosa spore banks from the sediments of two geographically well-separated ponds to experimentally infect a panel of Daphnia magna host clones whose resistance phenotypes were...

Room-temperature ionic liquids (ILs) are considered to be green chemicals that may replace volatile organic solvents currently used by industry. However, IL effects on aquatic organisms and ecosystems are currently unknown. We studied the acute effects of imidazolium-based ILs on survival of the crustacean Daphnia magna and their chronic effects on number of first-brood neonates, total number o...

Daphnids (Daphnia magna) were exposed to AgNO3 at 0.303 +/- 0.017 microg silver/L (46.9% as Ag+), in the absence of food, in moderately hard synthetic water under static conditions for up to 48 h. Results from accumulation experiments demonstrated that silver body burden was inversely related to body mass. Daphnids exposed to silver exhibited ionoregulatory disturbance, which was characterized ...

Nutrient loading derived from anthropogenic activities into lakes have increased the frequency, severity and duration of toxic cyanobacterial blooms around the world. Although herbivorous zooplankton are generally considered to be unable to control toxic cyanobacteria, populations of some zooplankton, including Daphnia, have been shown to locally adapt to toxic cyanobacteria and suppress cyanob...