Threshold mechanisms in acetylcholine pathway insecticides and environmental safety

Overview Previously we looked at some of the basic principles of nervous system function and how chemicals from several pesticide classes disrupt normal function.  This time we will look in detail about what we can expect for a dose-response characterization of acetylcholine pathway insecticides based upon their mode of action and properties of the nervous system.... Continue Reading →

Advertisements

EPA’s Proposed Imidacloprid Exposure Limitations are Not Strong Enough

Our comment letter to EPA follows below.   OPP Docket Environmental Protection Agency Docket Center (EPA/DC), (28221T) 1200 Pennsylvania Ave. NW. Washington, DC 20460-0001   Re: Pollinator Ecological Risk Assessments: Imidacloprid Registration Review EPA-HQ-OPP-2008-0844   To whom it may concern, We would like to offer some comments on the regulatory endpoints that are proposed in... Continue Reading →

The Mechanisms of Neuro-toxic Pesticides

Agricultural pesticides have become part of the chemical landscape that we all  live in.  To be able to make intelligent decision about the use and regulation of these chemicals, it's important to understand how they work.  Almost all modern pesticides are chemicals that interfere in some way with the nervous system. The characteristics of the... Continue Reading →

Environmental Implications of Pesticides with Delayed Toxicity

The debate about the environmental safety, or lack there of, for the neonicotinoid insecticides begs us to ask what would be the characteristics of an environmentally safe or benign pesticide?  Despite a growing and flourishing organic agriculture movement, industrial agriculture is not going away any time soon.  Hence it is important to understand how to... Continue Reading →

Resolving the Imidacloprid Paradox and the CCD Connection

There are quite a number of studies that show imidacloprid and other neonicotinoid insecticides don't do much damage to honeybees at levels expected in field conditions.  Yet there is plenty of evidence that "country" bees do better than "farm" bees. The big migratory beekeepers are the one's suffering the most, often with losses over 100% a year,... Continue Reading →

Powering Down in an Age of Irrational Politics

The politics of pain that is the fashion these days offers an unprecedented opportunity to advance a power-down agenda that will become a necessity in the years ahead. The defining characteristics of the Great Recession, and the Great Depression of the 1930's, are very high unemployment rates while interest rates remain very low. High unemployment... Continue Reading →

Blog at WordPress.com.

Up ↑

%d bloggers like this: