Topics

Insecticides in agricultural streams exert pressure for adaptation but impair performance in Gammarus pulex at regulatory acceptable concentrations.

08:00 EDT 9th March 2020 | BioPortfolio

Summary of "Insecticides in agricultural streams exert pressure for adaptation but impair performance in Gammarus pulex at regulatory acceptable concentrations."

Pesticide exposure in agricultural streams requires non-target species to adapt. However, pesticides may reduce performance in between exposure events due to long-term effects and physiological fitness costs of adaptation. Here, we investigated the long-term consequences of pesticide exposure to low concentrations in the widespread crustacean Gammarus pulex. We collected populations from six German streams covering no to moderate agricultural pesticide exposure. Peak concentrations ranged up to 1/400 of their acute median lethal concentration (Toxic Unit = -2.6), resulting in significant changes in the macroinvertebrate community composition (SPEAR = up to 0.12). Acute toxicity tests revealed up to 2.5-fold increased tolerance towards the most frequently found insecticide clothianidin compared to populations from non-contaminated streams. However, populations showing increased insecticide tolerance were characterized by reduced survival, per capita growth and mating when cultured under pesticide-free conditions in the laboratory for three months. We conclude that pesticide pollution triggers adaptation both at the species and the community level even at concentrations considered to be safe according to the European pesticide legislation. In G. pulex, exposure and adaptation are associated with impaired performance which potentially affects ecosystem functions such as leaf litter degradation. These long-term impairments need to be considered in deriving safe concentrations.

Affiliation

Journal Details

This article was published in the following journal.

Name: The Science of the total environment
ISSN: 1879-1026
Pages: 137750

Links

DeepDyve research library

PubMed Articles [14139 Associated PubMed Articles listed on BioPortfolio]

Forest streams are important sources for nitrous oxide emissions.

Streams and river networks are increasingly recognized as significant sources for the greenhouse gas nitrous oxide (N O). Nitrous oxide is a transformation product of nitrogenous compounds in soil, se...

Agricultural impacts on streams near Nitrate Vulnerable Zones: A case study in the Ebro basin, Northern Spain.

Agricultural intensification during the last century has caused river degradation across Europe. From the wide range of stressors derived from agricultural activities that impact rivers, diffuse agric...

Toward a Regional Phosphorus (Re)cycle in the US Midwest.

Redirecting anthropogenic waste phosphorus (P) flows from receiving water bodies to high P demand agricultural fields requires a resource management approach that integrates biogeochemistry, agronomy,...

The relationship of personal competencies, social adaptation, and job adaptation on job satisfaction.

Personal competencies are associated with successful job performance. Job satisfaction is directly related to nursing turnover, and is a critical indicator of their performance and quality of patient ...

Influence of land use and region on glyphosate and aminomethylphosphonic acid in streams in the USA.

Glyphosate is the most widely used herbicide in the United States for agricultural and non-agricultural weed control. Many studies demonstrate possible effects of glyphosate and its degradate AMPA on ...

Clinical Trials [8717 Associated Clinical Trials listed on BioPortfolio]

Scopolamine Treatment for Patients With Organophosphate Poisoning

Organophosphate (OP) compounds are a major threat as chemical warfare agents or in terrorist act. OPs are also the active ingredient of many insecticides. Ingestion of insecticides is a co...

Assessing the Preliminary Effects of a Multisectoral Agricultural Intervention on Adolescent Girls' Health

The goal of this study is to understand how the Shamba Maisha household agricultural and economic intervention impacts the sexual, reproductive, and nutritional health of adolescent girls....

Physiologic Signals and Signatures With the Accuryn™ Monitoring System in Intensive Care Patients

The purpose of the study is to collect physiologic data streams with the Accuryn Monitoring System and validate the accuracy of these measurements against existing gold standards, and to t...

Non Invasive Use of Pressure-Volume Loop in the Operating Room

In patients under general anesthesia, the prevention of intraoperative hypotension to maintain blood pressure (BP) close to the initial blood pressure, i.e. before anesthesia, is essential...

"New Perspectives of Adaptation to NIV in ALS"

The purpose of this study is to demonstrate that the adaptation to the Non Invasive Ventilation (NIV) at home is not worse when compared with an adaptation performed in inpatient settings.

Medical and Biotech [MESH] Definitions

Double-layered inflatable suits which, when inflated, exert pressure on the lower part of the wearer's body. The suits are used to improve or stabilize the circulatory state, i.e., to prevent hypotension, control hemorrhage, and regulate blood pressure. The suits are also used by pilots under positive acceleration.

The adjustment of the eye to variations in the intensity of light. Light adaptation is the adjustment of the eye when the light threshold is increased; DARK ADAPTATION when the light is greatly reduced. (From Cline et al., Dictionary of Visual Science, 4th ed)

The routing of water to open or closed areas where it is used for agricultural purposes.

The pressure within the CARDIAC ATRIUM. It can be measured directly by using a pressure catheter (see HEART CATHETERIZATION). It can be also estimated using various imaging techniques or other pressure readings such as PULMONARY CAPILLARY WEDGE PRESSURE (an estimate of left atrial pressure) and CENTRAL VENOUS PRESSURE (an estimate of right atrial pressure).

Cultivated plants or agricultural produce such as grain, vegetables, or fruit. (From American Heritage Dictionary, 1982)

Quick Search


DeepDyve research library

Searches Linking to this Article