Impact of grazing by multiple Daphnia species on wastewater bacterial communities.

Understanding the dynamics of fecal bacterial communities is crucial for managing public health risks and protecting drinking water resources. While extensive research exists on how abiotic factors influence the survival of fecal microbial communities in water, less attention has been paid to the impact of predation by higher organisms, such as the widely distributed grazer Daphnia. Nevertheless, Daphnia plays a significant role in regulating bacterial communities in natural aquatic ecosystems, and recent studies highlighted its potential as a biofilter in alternative tertiary wastewater treatment systems.

Ovarian traits, spawning pattern and season, length at first maturity, and batch fecundity of (Bleeker, 1852) caught from the Vietnamese Mekong Delta.

has a wide range of distribution, from brackish to freshwater water, ranging from India to the Philippines and Fiji, including the Vietnamese Mekong Delta (VMD), where it lives mainly in the coastal regions and plays a vital role in food supply. Our preliminary observation showed that its population tended to decline, but little is known about this species. This study, therefore, was conducted to provide data on the ovarian structure, spawning pattern and season, length at first maturity, and batch fecundity of this fish.

Evaluation of a probiotic blend on psychosocial health and biomarkers of inflammatory, immune and stress response in adults with subthreshold depression: a double-blind, randomised, placebo-controlled trial.

This study examined the efficacy of a probiotic in reducing depressive symptom severity in people with subthreshold depression. In a double-blind, randomised, placebo-controlled trial, a probiotic (1 × 10^9 live cells per strain: LF16 (DSM26956), LR06 (DSM21981), LP01 (LMG P-21021) and 04 (DSM23233)) or placebo was taken daily for 12 weeks. Data were collected at baseline, 6 and 12 weeks including psychological symptom severity (Beck Depression Inventory, BDI; Patient Health Questionnaire, PHQ; Hospital Anxiety Depression Scale, HADS; and Depression Anxiety and Stress Scale, DASS).

PFAS profiles in biosolids, composts, and chemical fertilizers intended for agricultural land application in Quebec (Canada).

Biosolids, sewage sludge, and composts are applied to agricultural land for nutrient recovery and soil organic matter replenishment, aligning with sustainable development goals. However, they may contain per- and polyfluoroalkyl substances (PFAS) that can enter the food chain through plant bioaccumulation and leaching into the groundwater. This study analyzed 80 PFAS compounds in sewage sludge, biosolids, commercial composts, and chemical fertilizers in Quebec, Canada, using UHPLC-HRMS (Orbitrap Q-Exactive).