Results 61 to 70 of about 76,951 (232)

Resource Availability Modulates Effects of Fluorine Free Firefighting Foams

Environmental Toxicology, EarlyView.
ABSTRACT Fluorine‐free foam (F3) alternatives that lack per‐ and polyfluoroalkyl substances (PFAS) are rapidly being adopted for firefighting operations and will be entering ecosystems. Despite this, little is known about their impact on freshwater communities.
Jack D. Morehouse, Lucas A. Cacula, Jason T. Hoverman   +2 more
wiley   +1 more source

Converging seasonal prevalence dynamics in experimental epidemics [PDF]

, 2011
Background Regular seasonal changes in prevalence of infectious diseases are often observed in nature, but the mechanisms are rarely understood. Empirical tests aiming at a better understanding of seasonal prevalence patterns are not feasible for most
Ebert, Dieter, Dieter Ebert, Hottinger, J. W., Ebert Dieter, Jürgen W Hottinger, Fabbro, Thomas, Sandra Lass, Lass Sandra, Fabbro, T., Lass, Sandra, Hottinger Jürgen W, Lass, S., Thomas Fabbro, Fabbro Thomas, Hottinger, Jürgen W.   +14 more
core   +1 more source

Transgenerational effects of microcystin-LR onDaphnia magna [PDF]

Journal of Experimental Biology, 2012
SUMMARYAnthropogenic and climate factors increase the frequency of problematic cyanobacterial blooms in freshwater. Among other toxins, some cyanobacteria produce microcystins (MCs), which inhibit phosphatases type 1 and type 2A and provokes oxidative stress.
Ortiz-Rodriguez, R., Dao, T. S., Wiegand, C.   +2 more
openaire   +4 more sources

Wildfire Ash Alters Freshwater Crustacean Behavior: Disentangling the Contributions of Suspended Macroparticles and Ash‐Induced Alkalinization

Environmental Toxicology, EarlyView.
ABSTRACT Climate change and anthropogenic ignitions are intensifying wildfire frequency worldwide, elevating the risk of freshwater contamination by ash. In water, dissolved ash releases ions and other toxic constituents that increase pH and alter physicochemical conditions, while suspended ash particles may impose mechanical stress, disrupt behavior ...
Pétterson B. Pereira‐Silva, Diogo R. Pacheco, Gustavo Kirsch, Ronnilda M. G. Araujo, Bianca V. C. Oscar, William G. Matias, Sandro Santos, Bruno R. S. Figueiredo   +7 more
wiley   +1 more source

Efeitos de poluentes e stressores naturais em organismos planctónicos [PDF]

, 2008
Mestrado em Toxicologia e EcotoxicologiaAo longo dos anos e com a crescente modernização da sociedade actual, diversos produtos químicos são libertados no meio ambiente, afectando-o gradualmente.
Martins, Maria Alexandra Santos
core  

Prediction of chronic toxicity of pharmaceuticals in Daphnia magna by combining ortholog prediction, pharmacological effects, and quantitative structure-activity relationship

Ecotoxicology and Environmental Safety
To develop a method for predicting chronic toxicity of pharmaceuticals in Daphnia, we investigated the feasibility of combining the presence of drug-target orthologs in Daphnia magna, classification based on pharmacological effects, and ecotoxicity ...
Yoshikazu Ninomiya, Haruna Watanabe, Takahiro Yamagishi, Taeko Maruyama-Komoda, Takashi Yamada, Hiroshi Yamamoto   +5 more
doaj   +1 more source

Comparing the Effects of Microplastics From Conventional Cigarette Butts and Heated Tobacco Device: The Role of UV‐Induced Aging

Environmental Toxicology, EarlyView.
ABSTRACT Despite the widespread presence of cigarette butts in the environment, the potential toxicological effects posed by microplastics (MPs) derived from them remain poorly understood. In this study, we compared the effects of MPs from conventional cigarette butts (cellulose acetate) and heated tobacco devices (cellulose acetate and polylactic acid
Andraž Dolar, Veno Kononenko, Valentina Perc, Damjana Drobne, Gabriela Kalčíková, Jernej Imperl, Tina Skalar, Ula Rozman, Branka Mušič, Anita Jemec Kokalj   +9 more
wiley   +1 more source

Maternal response to environmental unpredictability [PDF]

, 2015
This study was funded by a postdoctoral fellowship to MB (SFRH/BPD/82259/2011) and with a “Bolsista CAPES/BRASIL,” (Project A058/2013) to AMVMS.Mothers are expected to use environmental cues to modify maternal investment to optimize their fitness ...
Lopes, Isabel, Janeiro, Maria João, Catia Venâncio, Soares, Amadeu M.V.M., Morrissey, Michael Blair, Amadeu M.V.M. Soares, Janeiro Silva, Maria Joao, Isabel Lopes, Soares, Amadeu M. V. M., Barbosa, Miguel, Michael Blair Morrisey, Maria João Janeiro, Miguel Barbosa, Morrisey, Michael Blair, Venâncio, Catia   +14 more
core   +1 more source

Possible Causes of Extreme Variation of Benzo[a]pyrene Acute Toxicity Test on Daphnia magna

Toxics
There are enormous differences in benzo[a]pyrene (BaP) acute toxicity tests on Daphnia magna, according to previous publications. The explanations of the reasons for this extreme variation are necessary.
Zi-Yi Zheng, Yu-Ting Yang, Jing-Xuan Zhou, Zhao-Xing Peng, Hong-Gang Ni   +4 more
doaj   +1 more source

Short Communication: A 24 Hour Ecotoxicity Test for Acid Mine Drainage Using Hatching Success in Daphnia magna

Journal of Applied Sciences and Environmental Management, 2011
A bioassay utilizing the cladoceran Daphnia magna hatching success is presented for testing the toxicity of acid mine drainage (AMD) sediments. AMD sediments contain complex mixtures of potential toxins and a rapid, sensitive bioassay is valuable for ...
E Aluma, K Johnson
doaj   +1 more source