Archive for June, 2010
30
Jun
(Beyond Pesticides, June 30, 2010) The U.S. Environmental Protection Agency (EPA) approval process for thousands of antimicrobial products is woefully inadequate, according Public Employees for Environmental Responsibility (PEER). Despite a growing body of scientific evidence about the side-effects of these products, EPA rubberstamps registrations without duly considering an array of potential public health and environmental impacts. Antimicrobials are now a billion dollar business with more than 5,000 such products currently registered with EPA. Initially designed for hospitals and clinics, antimicrobial pesticides are today found in products ranging from household cleaners to mattresses and bedding, cosmetics, toys, toothpaste and even chopsticks. Antibacterial products are being marketed to the health conscious without firm evidence of real benefits and amid growing concern about downstream consequences. One prime example of this is the antibacterial pesticide triclosan that is formulated into hundreds of personal care products, toys and textiles. Studies show that triclosan is an endocrine disruptor, accumulates in human fatty tissue and can influence the onset of bacterial resistance. Beyond Pesticides, Food and Water Watch and several other groups petitioned FDA in 2009 and EPA in January 2010, calling for the ban of triclosan citing the possibility of bacterial resistance to antibacterial substances and […]
Posted in Pesticide Regulation, Triclosan | 2 Comments »
29
Jun
(Beyond Pesticides, June 29, 2010) Based on a flawed assessment, the authors of recent study out of the University of Guelph in Ontario, Canada have been attacking organic agriculture as less environmentally friendly than chemical-intensive conventional methods. In their press release, the authors say, âConsumers shouldn’t assume that because a product is organic it’s also environmentally friendly.â However after analyzing the study, Beyond Pesticides determined that this message is flawed and misleads consumers because the study does not actually evaluate an organic system. Instead the study substitutes natural pesticides that are approved in organic systems for synthetic pesticides in a conventional soybean field. The authors warned policy makers against promoting organic agriculture, based on the false assumptions of their study. âIf the goal of their study was to educate consumers as their message to the media suggests, then the authors of this study have shown a surprising lack of knowledge about organic agriculture,â said Beyond Pesticides project director John Kepner. âOrganic agriculture is based on pest prevention and soil health. Organic farmers use techniques such as crop rotation and the creation of habitat for beneficial species, with organic-approved natural pesticides only as a last resort. Substituting these chemicals into a […]
Posted in Agriculture, Alternatives/Organics | 1 Comment »
28
Jun
(Beyond Pesticides, June 28, 2010) A new report documents high levels of pesticide drift in the California community of Sisquoc. Poison Gases in the Field: Pesticides put California families in danger, released by Pesticide Action Network North America and local community members, presents results of community air monitoring for fumigant pesticides in the central coast area of California, in Santa Barbara County. Using a simple monitoring device called the Drift Catcher, community members measured levels of a fumigant pesticide above the California Department of Pesticide Regulationâs (DPR) âlevel of concernâ â even when all application rules were followed and no equipment failure occurred. âWhile we were monitoring the air, there were no violations of the Countyâs permit – and yet we found we were still breathing chloropicrin at high levels,â says Deby DeWeese, one of the community members who collected air samples. âClearly the rules and regulations do not protect our families.â The Sisquoc monitoring, conducted during and after a soil fumigation in April 2008, found the pesticide chloropicrin in about half of the 57 air samples collected. Two samples had chloropicrin levels higher than DPRâs 24-hour level of concern for children, and the 19-day average level at one sampling […]
Posted in California, chloropicrin, methyl iodide, Pesticide Drift | 2 Comments »
25
Jun
(Beyond Pesticides, June 25, 2010) Two new studies published in the journal Environmental Science and Technology confirm that the majority of toxic contamination threatening national parks originates from agricultural pesticides and industrial operations. In one study an international group of scientists conducted research from 2003-2005 and detected elevated concentrations of various dangerous pesticides in all eight of the national parks and preserves. The other study collected samples of air, water, snow, sediment, lichens, conifer needles, and fish at remote alpine, subarctic, and arctic sites. Researchers found that these samples contained four current-use pesticides including dacthal (DCPA), chlorpyrifos, endosulfans, and y-hexachlorocyclohexane (HGH) as well as four historic-use pesticides including dieldrin, a-HCH, chlordanes, and hexachlorobenzene (HCB). Pesticide concentrations in snow are highest in Sequoia, Kings Canyon, Rocky Mountain and Glacier National Parks. Concentrations in vegetation are mostly dominated by endosulfan and dacthal, and are highest in Yosemite, Kings Canyon, Glacier, and Great Sand Dunes National Park and Preserve. Fish samples also show elevated concentrations of dieldrin and DDT (one of the first pesticides to be banned in 1972 because of Rachel Carsonâs Silent Spring). Cold temperatures in alpine or arctic ecosystems tend to concentrate pesticides, which can also bioaccumulate in the local […]
Posted in Chlordane, Chlorpyrifos, dacthal, DDT, Dieldrin, Endosulfan, hexachlorobenzene (HCB), Wildlife/Endangered Sp. | No Comments »
24
Jun
(Beyond Pesticides, June 24, 2010) Our food purchases have a direct effect on the health of our environment and those who grow and harvest what we eat. Beyond Pesticides launched its Organic Food: Eating with a Conscience guide, which shows consumers why, according to the group, âfood labeled organic is the right choice.â Jay Feldman, executive director of Beyond Pesticides, said, âIn addition to serious health questions linked to actual residues of toxic pesticides on the food we eat, our food buying decisions support or reject hazardous agricultural practices, protection of farmworkers, and stewardship of the earth.â The Eating with a Conscience guide explains to consumers the effect they are having on health and the environment when they purchase food grown with chemical-intensive methods, even if a large number of residues do not remain on the finished food product. The group points to USDA organic certification as âthe only system of food labeling that is subject to independent public review and oversight, assuring consumers that toxic, synthetic pesticides used in conventional agriculture are replaced by management practices focused on soil biology, biodiversity, and plant health.” âOrganic practices under the Organic Foods Production Act eliminate commonly used toxic chemicals in the […]
Posted in Agriculture, Alternatives/Organics, Chemicals, Disease/Health Effects, Farmworkers, Water, Wildlife/Endangered Sp. | No Comments »
23
Jun
(Beyond Pesticides, June 23, 2010) The Supreme Court ruling in Monsanto v Geersten Seed Farms on June 21, 2010 appears to favor the St. Louis-based biotech giant, but may offer some protection from genetically engineered (GE) crops. In a 7 to 1 decision, the high court overturned a lower court injunction on the planting of GE alfalfa, yet planting the crop still remains illegal until USDA completes assessing its environmental review. Interestingly, Justice Steven G. Breyer recused himself because his brother District Judge Charles Breyer had issued the original ruling, while Justice Clarence Thomas did not recuse himself despite having worked as a Monsanto attorney for two years. In 2006, the Center for Food Safety (CFS) and several other farming and environmental groups, including Beyond Pesticides, filed suit on behalf of Geerston Seed Farms. The suit led to a U.S. District Court ruling that the U.S. Department of Agriculture (USDA) violated the National Environmental Protection Act (NEPA) by approving the sale of GE alfalfa without requiring an environmental impact statement (EIS). Monstanto was forced to stop selling the seed until a comprehensive EIS is prepared and assessed. A draft EIS was prepared in 2009. This was the first ever moratorium […]
Posted in Litigation, Monsanto | No Comments »
22
Jun
(Beyond Pesticides, June 22, 2010) The U.S. Environmental Protection Agency (EPA) announced earlier this month that it is seeking public comment on its draft five-year strategic plan, which the agency says will help advance Administrator Lisa P. Jackson’s priorities and EPAâs overall mission to protect human health and the environment. Administrator Jacksonâs seven priorities are; taking action on climate change, improving air quality, protecting Americas waters, cleaning up our communities, assuring the safety of chemicals, expanding the conversation on environmentalism and working for environmental justice, and building strong state and tribal partnerships. In accordance with the Government Performance and Results Act of 1993 (GPRA), EPA submitted the agency’s 2006-2011 Strategic Plan to Congress on September 29, 2006. Now, the agency is releasing its Draft FY 2011-2015 Strategic Plan for public review and comment through July 30, 2010. GPRA requires agencies to develop a five-year Strategic Plan for what they intend to accomplish, measure how well they are doing, make appropriate decisions based on the information they have gathered, and communicate information about their performance to Congress and to the public. It includes a mission statement and sets out long-term goals and objectives; Annual Performance Plans, which provide annual performance commitments […]
Posted in Announcements | 3 Comments »
21
Jun
(Beyond Pesticides, June 21, 2010) Pesticide experiments using people as test subjects will have stricter federal rules to follow under a new agreement reached on June 17, 2010 between the U.S. Environmental Protection Agency (EPA) and public health groups, farm worker advocates and environmental organizations. âPeople should never have been used as lab rats for testing pesticides,â said Natural Resources Defense Council (NRDC) senior attorney Michael Wall. âUnder todayâs settlement, EPA will propose far stronger safeguards to prevent unethical and unscientific pesticide research on humans.â In 2006, a coalition of health and environmental advocates and farmworker protection groups led by NRDC filed a lawsuit against EPA, claiming EPAâs recent rule violated a law Congress passed in 2005 requiring strict ethical and scientific protections for pesticide testing on humans. EPAâs 2006 rule lifted a ban on human testing put in place by Congress. It also allows experiments in which people are intentionally dosed with pesticides to assess the chemicalsâ toxicity and allows EPA to use such experiment to set allowable exposure standards. In such experiments, people have been paid to eat or drink pesticides, to enter pesticide vapor âchambers,â and to have pesticides sprayed into their eyes or rubbed onto their […]
Posted in Environmental Justice, Litigation | 3 Comments »
18
Jun
(Beyond Pesticides, June 18, 2010) A panel of U.S. and Vietnamese policy makers, scientists, and citizens released a report on Wednesday urging the U.S. government and other donors to provide $300 million to clean up contaminated sites and care for Vietnamese harmed by exposure to Agent Orange, an herbicide used by the U.S. to defoliate large swaths of forest during the Vietnam War that was contaminated by dioxin. Dioxin is a very persistent toxicant that clings to the soil and sediments, and bioaccumulates in the food chain. Many studies have linked dioxin exposure to a myriad of health effects including cancer, neuropathy, diabetes, Parkinsonâs Disease, and birth defects. This report comes one month before the U.S. and Vietnam will celebrate 15 years of normalized diplomatic relations. The U.S.-Vietnam Dialogue Group on Agent Orange/Dioxin released the report calling for an estimated $30 million annually for the next 10 years. Since 2007, the U.S. has spent only $9 million on dioxin remediation and assisting disabled Vietnamese. The report lays out a plan with three phases. The first phase, lasting three years and estimated to cost $100 million, would focus on completing remediation in Da Nang, one of the largest contaminated sites. This […]
Posted in 2,4-D, Environmental Justice, International | No Comments »
17
Jun
(Beyond Pesticides, June 17, 2010) Researchers have found detectable levels of common household pesticides in the majority of umbilical cord blood of babies born at an urban hospital. The study looks at concentrations of organophosphate (OP), carbamate, pyrethroids, and organochlorine pesticides in samples of umbilical cord blood taken from newborns delivered at the Johns Hopkins Hospital Labor and Delivery Suite in Baltimore. Researchers looked at the umbilical cord serum, as opposed to maternal serum, in order to provide a more direct estimate of exposure to the fetus. While human biomonitoring studies have found detectable levels of these pesticide chemicals in urine and blood samples from children and adults in the past, few studies have been carried out in the U.S. evaluating exposure in utero. In addition to tracking pesticide concentrations, researchers also aimed to identify demographic and socioeconomics factors associated with in utero pesticide exposure. Anonymous anthropometric and sociodemographic characteristics of the mothers and infants were collected along with umbilical cord blood that would have otherwise been discarded. Included in the characteristics collected that researchers considered might affect pesticide exposure risk were: age, race, body mass index, parity, education, health insurance, marital status, smoking, area of residence and housing density. […]
Posted in Children/Schools, organophosphate | 1 Comment »
16
Jun
(Beyond Pesticides, June 16, 2010) Men with certain genetic variations who were exposed to some toxic pesticides that are now largely banned run an increased risk of developing Parkinson’s disease, French scientists said Monday. In a study published in Archives of Neurology, entitled âInteraction Between ABCB1 and Professional Exposure to Organochlorine Insecticides in Parkinson Disease,â French researchers found that among men exposed to pesticides such as DDT, carriers of the gene variants are three and a half times more likely to develop Parkinson’s than those with the more common version of the gene. The scientists think the brains of people with the gene variant fail to flush out toxic chemicals as efficiently as those with common versions of the gene, suggesting that environmental as well as genetic factors are important in the risk of Parkinson’s. Alexis Elbaz, MD, PhD and Fabien Dutheil, PhD, of France’s National Institute for Health and Medical Research (INSERM) studied 101 men with Parkinson’s and 234 without the disease to look at links between organochlorine exposure and Parkinson’s disease. The study includes only men, and all of them had high levels of exposure to pesticides through their work as farmers. The scientists found the link was […]
Posted in DDT, Parkinson's | No Comments »
15
Jun
(Beyond Pesticides, June 15, 2010) The U.S. Department of Agricultureâs (USDA) National Organic Program (NOP) announced on June 14, 2010 it has reached a settlement agreement with the organic certifying agent Organic Crop Improvement Agency (OCIA), ceasing its operations in China because of inadequate oversight. An August 2007 audit by the NOP revealed that OCIA used inspectors on state-run farms who were employed by the Chinese government and therefore had a conflict of interest. In July 2008, NOP proposed revocation of OCIAâs accreditation in China, but OCIA appealed. The settlement agreement with OCIA, once a lead certifier of Chinese organic goods, prohibits it from operating in China. OCIA retains its accreditation for its certification activities in other countries, including the U.S., Canada and Mexico. âIt is critical that we maintain the integrity of organic products for consumers,â said Rayne Pegg, Administration of USDAâs Agricultural Marketing Service (AMS), which administers the NOP. âAll certifiers and operations, domestic or foreign, must be held to the same standards. We will remain vigilant to make sure that products labeled as organic meet the standards prescribed by law.â Environmentalists are pleased that USDA has taken action against OCIA, but are concerned that the process did […]
Posted in Alternatives/Organics, International | No Comments »
14
Jun
(Beyond Pesticides, June 14, 2010) Whole Foods Market is setting a good example for other retailers to follow in protecting consumers from fraudulent âorganicâ claims on health and beauty products. The national grocery retailer of natural and organic products announced earlier this month that all cosmetic and personal care products sold at their stores with the word âorganicâ on the product label must comply with the U.S. Department of Agriculture (USDA) National Organic Program (NOP) or NSF 305 standards, meaning that the product must be third-party certified to USDA organic standards or front label âorganicâ claims must cease, according to the Organic Consumers Association. Thought the term âorganicâ on all products, whether for food or non-food items, meant that it was certified? That’s the law, but sometimes not the reality. The reality is that the USDAâs NOP requires certification for all âorganicâ claims on food products, but does not currently have similar certification requirements in place for non-food items. The new Whole Foods Market policy states, “We believe that the ‘organic’ claim used on personal care products should have very similar meaning to the ‘organic’ claim used on food products, which is currently regulated by the USDA’s National Organic Program. […]
Posted in Alternatives/Organics, Whole Foods | No Comments »
11
Jun
(Beyond Pesticide, June 11, 2010) The Environmental Protection Agency (EPA) has refused the state of Ohioâs request for an emergency exemption to use the restricted pesticide propoxur in residential settings for control of bed bugs, stating that the chemical âpresents unreasonable risk.” Propoxur is a highly toxic, broad spectrum insecticide. All indoor residential uses of this known neurotoxic chemical and possible carcinogen were voluntarily canceled in 2007. The Ohio Department of Agriculture, deeming the increases in bed bug infestations an emergency, requested an exemption to use propoxur in residential areas and in May the Ohio Senateâs Environment and Natural Resources Committee adopted a unanimous resolution urging the EPA to grant it. Beyond Pesticides, with coalition of environmental and public health groups, opposed the request and asked EPA to deny the exemption, citing the serious public health threat associated with the chemical, as well as the availability of alternatives. EPA determined âthe requested use presents an unacceptable risk,â according to Administrator Lisa Jackson, in a letter to Ohio Governor Ted Strickland dated June 2, 2010. âAlthough EPA recognizes the severe and urgent challenges that Ohio is facing from bed bugs, the results of the risk assessment do not support the necessary […]
Posted in Bedbugs, Ohio, Propoxur | 2 Comments »
10
Jun
(Beyond Pesticides, June 10, 2010) After years of pressure from environmental and international groups concerned about the chemicalâs health effects, the U.S. Environmental Protection Agencey (EPA) announced that it is taking action to end all uses of the insecticide endosulfan in the United States. EPA has decided that new data presented to the agency in response to its 2002 reregistration eligibility decision (RED) have shown that risks faced by workers are greater than previously known. EPA also has found that there are risks above the agencyâs level of concern to aquatic and terrestrial wildlife, as well as to birds and mammals that consume aquatic prey which have ingested endosulfan. Farmworkers can be exposed to endosulfan through inhalation and contact with the skin. An organochlorine insecticide first registered in the 1950s, endosulfan is used on a variety of vegetables, fruits, cotton, and on ornatmental shrubs, trees and vines. It poses unacceptable neurological and reproductive risks to farmworkers and wildlife and can persist in the environment. According to the EPA, crops with the highest use in 2006 â 2008 included tomato, cucurbit, potato, apple, and cotton. The use of endosulfan decreased overall from 2001 to 2008. A restricted use pesticide, endosulfan may […]
Posted in Announcements, Endosulfan, Pesticide Regulation | No Comments »
09
Jun
(Beyond Pesticides, June 9, 2010) Residents of New York now have new assistance in maintaining beautiful, green lawns, plants and trees without the use of toxic chemicals. The New York Department of Environmental Conservation (DEC) has initiated the âËBe Green Organic Yard NYâ program, where participating âËBe Greenâ businesses agree to avoid synthetic pesticides and other materials prohibited by the organic âËBe Greenâ standard. âËBe Greenâ landscape services utilize an organic approach focusing on preventing problems before they occur, and building a sustainable landscape that is healthy for all -plants, wildlife, pets, and people. Services can range from a simple regimen of weeding, mulching and pruning, to all aspects of yard care, including plant selection and tree and lawn installation and maintenance. DEC expects that, by the fall of 2010, yard care businesses will be able to begin taking the training required to participate in âËBe Greenâ. âËBe Greenâ businesses sign an agreement with DEC for the right to use the âËBe Greenâ service mark (logo). In return, businesses agree that, when they provide âËBe Greenâ services, they will avoid the synthetic pesticides and other materials prohibited by the organic standards in the agreement. “Demand for all types of organic […]
Posted in Lawns/Landscapes, New York | 2 Comments »
08
Jun
(Beyond Pesticides, June 8, 2010) An Indian court in Bhopal, India, capital of Madhya Pradesh, found chemical company Union Carbide guilty of negligence and convicted eight former senior employees for their role in the worldâs worst industrial disaster that killed thousands. The verdict came 25 years after the Union Carbide gas-leak and included a sentence that many victims of the accident protested was too light. According to Reuters, the defendants were charged with âdeath by negligenceâ and sentenced for two years in prison and a fine of 100,000 rupees ($2,175). The court also fined the former Indian unit of Union Carbide 500,000 rupees ($10,600). The Central Board of Investigation initially charged 12 defendants with culpable homicide, which would have carried a sentence of up to 10 years, but the Indian Supreme Court reduced these charges in 1996. Many victims and activists found the light sentence, âan insultâ, and Sandhna Kamik of the Bhopal Gas Victims Struggle group protested, âEven with the guilty judgment, what does two years punishment mean? They will be able to appeal against the judgment in higher courts.â Survivors, relatives and activists gathered in protest with signs saying âhang the guiltyâ and âtraitors of the nationâ and […]
Posted in Dow Chemical, Environmental Justice | 1 Comment »
07
Jun
(Beyond Pesticides, June 7, 2010) With thousands of violations cited, the pest control company and applicator responsible for the deaths of two young children are only fined several tens of thousands of dollars, a mere slap on the hand. The Utah Department of Agriculture and Foodâs (UDAF) Division of Plant Industry has finally filed multiple charges of violations against Bugman Pest and Lawn, Inc. of Bountiful, Utah, and employee Cole Nocks associated with the February 5, 2010 application of the pesticide Fumitoxin (active ingredient: aluminum phosphide) at the residence of Nathan and Brenda Toone of Layton, Utah that lead to the death of their two daughters ages 15-months and 4 years. In addition to the Layton incident, investigators discovered additional violations of the Utah Pesticide Control Act by the company and other employees. The UDAF seeks to revoke Mr. Nocksâs applicator license and has issued him a $27,000 fine, while Bugman Pest and Lawn, Inc. is fined $32,000. Under law, the UDAF is only allowed to file civil penalties. Investigators determined that on February 5, 2010 applicator Cole Nocks operated in a faulty, careless or negligent manner by misapplying the highly toxic and restricted use pesticide, Fumitoxin. Mr. Nocksâs improper […]
Posted in aluminum phosphide, Pesticide Regulation | 3 Comments »
04
Jun
(Beyond Pesticides, June 4, 2010) The U.S. Environmental Protection Agency (EPA) proposed new permit requirements for the discharge of pesticides into US waterways. EPA announced the public availability of a draft National Pollutant Discharge Elimination System (NPDES) General Permit for certain pesticide use patterns, also known as the Pesticides General Permit (PGP). The agency is accepting public comments until July 19, 2010. This action stems from a 2009 court decision in the case of the National Cotton Council et al. v. EPA, in which the 6th circuit court of appeals ruled that pesticide discharges into water are pollutants and require permitting under the Clean Water Act (CWA). This ruling overturned the Bush administration policy that exempted pesticides from regulation under the CWA, and instead applied the less stringent standards of the Federal Insecticide Fungicide and Rodenticide Act (FIFRA). CWA uses a kind of health-based standard known as maximum contamination levels to protect waterways and requires permits when chemicals are directly deposited into rivers, lakes and streams, while FIFRA uses a highly subjective risk assessment that does not consider safer alternatives. EPA will issue permits in territories, Indian Country Lands, 6 states and the District of Columbia where the Agency is […]
Posted in Pesticide Regulation | No Comments »
03
Jun
(Beyond Pesticides, June 3, 2010) City lawmakers in Albany, New York want to strengthen an 11-year-old ban on the use of some pesticides on city land after the revelation last week that one such banned chemical was sprayed near a local playground earlier this month. Albanyâs Parks and Recreation Commissioner John D’Antonio said last Friday he was unaware of the ban, passed by the council in 1998, until he began researching a recent citizen complaint. The city is now rethinking its use of pesticides and exploring why the ban on city use of pesticides dubbed most toxic by the federal government was not more widely known. The law also required departments using less toxic pesticides to annually report plans to phase them out to the Common Council. TruGreen, a city contractor, used Trupower 3 Selective Herbicide, which is a mixture of 2,4-D, mecoprop-p and dicamba, and is listed in Toxicity Category 1 (most toxic) by the Environmental Protection Agency (EPA) — causing potentially irreversible eye damage, but is also toxic if ingested and can be irritating to the skin. The herbicide has been banned from city land, except in rare circumstances, since 1999. Under the same ordinance, all city agencies […]
Posted in New York, Pesticide Regulation, TruGreen | No Comments »
02
Jun
(Beyond Pesticides, June 2, 2010) After decades-long litigation over the use of the toxic pesticide dibromochloropropane, or DBCP, in the 1970’s which has been linked to sterility and has since been banned, Dole Food Co. is proposing new settlements for farm workers claiming they were injured by exposure to the pesticide. A request has been filed by lawyers for Dole in the Los Angeles Superior Court asking that nearly 1,500 Honduran farm workers who are suing Dole be allowed to drop out of those suits and settle their claims out of court under an existing program arranged by the company and Honduran government officials. This could potentially end years of legal action inexpensively for Dole while providing compensation to workers quickly, however some people view this plan as a way for the company to back out of its responsibilities to former plantation workers. The pesticide DBCP was used by workers from Nicaragua, Costa Rica, Guatemala, Honduras, and Panama to kill worm infestations in the treesâ roots. In the U.S., DBCP was used as a soil fumigant and nematocide on over 40 different crops until 1977. According to the U.S. Environmental Protection Agency (EPA), DBCP causes male reproductive problems, including low […]
Posted in DBCP, Dole, Environmental Justice, Farmworkers, Infertility, International, Litigation | 1 Comment »
01
Jun
(Beyond Pesticides, June 1, 2010) Atrazine, one of the most commonly used herbicides in the world, has been shown to affect reproduction of fish at concentrations below U.S. Environmental Protection Agencyâs (EPA) water-quality guideline, according to a new U.S. Geological Survey (USGS) study. âConcentrations of atrazine commonly found in agricultural streams and rivers caused reduced reproduction and spawning, as well as tissue abnormalities in laboratory studies with fish,â said USGS scientist Donald Tillitt, Ph.D., the lead author of the study, âAtrazine Reduces Reproduction in Fathead Minnow (Pimephales promelas)” published in Aquatic Toxicology. Fathead minnows were exposed to atrazine at the USGS Columbia Environmental Research Center in Columbia, Missouri, and observed for effects on egg production, tissue abnormalities and hormone levels. Fish were exposed to concentrations ranging from zero to 50 micrograms per liter of atrazine for up to 30 days. All tested levels of exposure are less than the EPA Office of Pesticides Aquatic Life Benchmark of 65 micrograms per liter for chronic exposure of fish. Study results show that normal reproductive cycling was disrupted by atrazine and fish did not spawn as much or as well when exposed to atrazine. Researchers found that total egg production was lower in […]
Posted in Atrazine, Water, Wildlife/Endangered Sp. | 3 Comments »