Category: Ecotoxicology

Tackling the impacts of pesticides on human, animal and environmental health

Read the full story at Open Access Government.

Jane Mills, University of Gloucestershire, tells us about the SPRINT project’s aim to tackle the impacts of pesticides on human, animal and environmental health.

Fish guts on the Red Line: Chicagoan was transporting specimens for a study showing the long history of microplastics in freshwater species

Read the full story in the Chicago Tribune.

To prove that fish ingestion of microplastics is more than just an ocean story and more than just a modern story, Loren Hou used an unusual technique.

Transporting the digestive tracts of four freshwater fish species she was studying from the Field Museum, where she dissected specimens dating back to the 1900s, up the Lakefront to Loyola University Chicago, where she would analyze what was in the fishes’ guts, Hou sometimes took the Red Line.

Complexity of microplastic pollution

Read the full story from Wiley.

Microplastics — small plastic pieces less than 5 millimeters in length — are ubiquitous in the environment, and they can have significant effects on wildlife. A new study reveals that there are multiple impacts of different microplastics — with varying sizes, shapes, and chemical makeup — to the survival, growth, and development of larval fathead minnows, an important prey species in lakes and rivers in North America.

Mangroves and seagrasses absorb microplastics

Read the full story from the University of Southern Denmark.

Mangroves and seagrasses grow in many places along the coasts of the world, and these ‘blue forests’ constitute an important environment for a large number of animals. Here, juvenile fish can hide until they are big enough to take care of themselves; crabs and mussels live on the bottom; and birds come to feed on the plants.

However, the plant-covered coastal zones do not only attract animals but also microplastics, a new study shows.

Fish have been swallowing microplastics since the 1950s

Read the full story from the Field Museum.

Researchers examined the guts of freshwater fish preserved in museum collections. They found that fish have been swallowing microplastics since the 1950s and that the concentration of microplastics in their guts has increased over time.

Rat poison found in bodies of 80% of American eagles

Read the full story in The Guardian.

Rat poison has been found in the bodies of an estimated 80% of American eagles, according to a new study from the University of Georgia.

Wetland Management Technique Designed to Reduce Mercury in Water and Fish Tested During a Short-Term Field Study

Read the full story from the USGS.

Results from a 3-year study indicate there was support for the use of open- and deep-water treatment pools at the downstream end of seasonal wetlands to reduce methylmercury concentrations in water exported from the wetlands, but the treatment had no measurable effect on wetland fish. Questions remain about the long-term potential for mercury removal using this wetland management strategy.

Scientists Finally Identify a Deadly Toxin That’s Been Killing Birds

Read the full story in Wired.

Thousands of eagles and other fowl have died from a mysterious condition that attacks their nervous systems. Now, after decades of investigation, we know why.

Mussel Sensors Pave the Way for New Environmental Monitoring Tools

Read the full story from North Carolina State University.

Researchers at North Carolina State University have designed and demonstrated a new system that allows them to remotely monitor the behavior of freshwater mussels. The system could be used to alert researchers to the presence of toxic substances in aquatic ecosystems.

Webinar: Advances in Understanding PFAS Ecological Risks

Apr 8, 2021, 11am CDT
Register here.

This SERDP and ESTCP webinar focuses on DoD-funded research to improve understanding of the ecological risks of per- and polyfluoroalkyl substances (PFAS). Specifically, investigators will discuss the pathways and rates of PFAS uptake, bioaccumulation, and biomagnification within freshwater food webs, and a tiered approach for assessing PFAS risk to threatened and endangered species.

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