(Beyond Pesticides, November 5, 2007) Forty-four organizations signed on to a letter to the National Organic Standards Board (NOSB) on October 26, asking the board to protect organic aquaculture standards by prohibiting the USDA’s organic label from being placed on fish raised in open net pens or fed wild fish. Six months ago, the NOSB voted overwhelmingly to temporarily ban the labeling of any fish raised under these circumstances as organic until comments from industry and the organic community on the issue could be heard. During this time, the Aquaculture Working Group issued an Interim Report, which proposes conditions under which wild fishmeal and oil could be used as feed ingredients and open net pen fish farming would be allowed in organic aquaculture. In response to the report’s suggestions, the co-signing organizations conclude that while the farming of herbivorous finfish may be conducted within organic regulations, farming carnivorous finfish (including salmon) in open net cage systems is an inherently flawed farming practice, incompatible with organic principles. “Raising fish in this manner directly contradicts USDA Organic regulations; putting a USDA Organic label on these fish is like trying to force a round peg into a square hole,” said Center for Food […]

(Beyond Pesticides, August 13, 2007) Greenland sharks, which inhabit some of the least populated regions on Earth in seemingly pristine Arctic waters, contain high amounts of human-manufactured industrial waste in their bodies, including toxic pesticide byproducts. The findings are available online in Marine Pollution Bulletin (in press), entitled “Dioxins and PCBs in Greenland shark (Somniosus microcephalus) from the North-East Atlantic.” According to the team of researchers at Stockholm University, the highest measured concentration found is for the world’s most toxic dioxin, TCDD, a compound found in the herbicide Agent Orange, which the U.S. military used during the Vietnam War. The herbicide was used for other applications from 1961 to 1971. The study also names another set of discontinued chemicals, polychlorinated biphenyls, or PCBs, as the main source of the contaminants found in the Greenland sharks. PCBs were banned in the 1970s, which illustrates how persistent such compounds are in the environment and how long-living, top predator species may carry them for decades. Project leader Dr. Åke Bergman, Ph.D., an environmental chemist at Stockholm University, told Discovery News that he and his team decided to focus on Greenland sharks since their normal lifespan may exceed 100 years, based on an annual […]

(Beyond Pesticides, August 2, 2007) According to the Associated Press (AP), a new study finds frogs in Vermont living near farms are more than twice as likely as those living elsewhere to have deformities like missing legs. Yale University ecologist David Skelly, Ph.D., told the AP he decided to look at Vermont frogs because the state has been a hot spot during the last 10 years for deformed frogs. “We went to all these wetlands and cataloged where the deformities were found, and what kind of landscapes seemed to pose higher risks, if any,” Dr. Skelly said. “The answer was, frogs growing up in proximity to agriculture were more than two times as likely to have deformities. This doesn’t say it is chemical pesticides, but you can’t credibly consider this problem of the frogs without at least evaluating whether pesticides are involved.” Richard Levey, a biologist with the Vermont Agency of Natural Resources, said two common farm chemicals, atrazine and metolachlor, had been found in trace amounts in water from wetlands where deformed frogs had been found. But he told the AP that the concentrations were far below those thought to have any effect on aquatic life. Research by Tyrone […]

(Beyond Pesticides, July 23, 2007) New research finds several species of freshwater fish have lower temperature tolerances when exposed to the widely used pesticides endosulfan and chlorpyrifos. The discovery reveals another key pesticides issue in the global warming debate. The study, “The Effects of Three Organic Chemicals on the Upper Thermal Tolerances of Four Freshwater Fishes” (Environmental Toxicology and Chemistry, July 2007), is the work of Ronald Patra of Australia’s Department of Environment and Conservation and colleagues. The study establishes the upper temperature tolerances of both unexposed and exposed silver perch, eastern rainbowfish, western carp gudgeon and rainbow trout. Exposed fish were given sublethal doses of endosulfan, chlorpyrifos or phenol. The results show exposure to endosulfan cause a decrease of temperature tolerance in silver perch by 2.8 °C, eastern rainbowfish 4.1 °C, western carp gudgeon 3.1 °C, and rainbow trout 4.8 °C. Chlorpyrifos decreases temperature tolerance in silver perch by 3.8 °C, eastern rainbowfish 2.5 °C, western carp gudgeon 4.3 °C, and rainbow trout 5.9 °C. Phenol is not shown to cause a significant decrease in tolerance. The authors conclude, “The reduction in thermal tolerance of fish in the presence of endosulfan and chlorpyrifos suggest that, not only does temperature […]

(Beyond Pesticides, July 17, 2007) A study conducted by Canadian researchers show that high concentrations of POPs, or Persistent Organic Pollutants, can be observed in humans and other air-breathing animals even though they may not accumulate in fish. This suggests that current risk assessment methodologies need to be changed for identifying potential POPs in birds and mammals. POPs are synthetic, toxic chemicals that persist in the environment, bioaccumulate in food chains and are common contaminants in fish, dairy products and other foods. These compounds are generally accepted to be hydrophobic and fat-soluble. Screening for these bioaccumulative compounds is normally conducted with laboratory tests using fish. However researchers Barry C. Kelly, and Frank Gobas, Ph.D., at Simon Fraser University in Burnaby, British Columbia report that this methodology may overlook a significant number of pollutants that pose health risks to air-breathing animals. The study entitled “Food Web—Specific Biomagnification of Persistent Organic Pollutants” (Science 2007, v317, p236) examines the biomagnification of moderately hydrophobic compounds with octanol-water partition coefficients (Kow) between 100 and 100,000 (currently, compounds with Kow greater than 100,000 are generally categorized as bioaccumulative compounds and tend to be hydrophobic and fat-soluble) and compounds with high octanol-air partition coefficients (Koa). The compounds […]

(Beyond Pesticides, July 9, 2007) New field and laboratory research reveals that organochlorine pesticides reduce the hatching rate of alligator eggs. This finding adds to previous studies demonstrating that pesticides cause endocrine disruption in alligators, resulting in poorly developed reproductive organs. American alligators, which were delisted from the endangered species list in the late 1980s, are still experiencing low hatching rates around contaminated wetlands. In Florida, many wetlands were converted or are adjacent to farmlands and some farmlands have been restored back into wetlands in efforts to improve ecosystem health. Agricultural runoff has altered the surrounding aquatic environments by depositing pesticide residuals and skewing nutrient levels. Organochlorine pesticides, such as chlordane, toxaphene and dieldrin, have been especially problematic due to their persistent nature. The link between pesticides and reproductive problems in alligators has been firmly established since the 1990s. University of Florida zoologist Louis Guillette, Ph.D., found pesticides are linked to smaller penises and abnormal egg development in exposed alligators. Florida Fish and Wildlife Conservation Commission official Allan Woodward has also observed fewer hatches around lakes with high pesticide levels. He reports the hatching rate has improved around Lake Apopka, a large lake in central Florida, during the last two […]

(Beyond Pesticides, June 29, 2007) On June 28, 2007, forty years after it received protection under the Endangered Species Act (ESA) and thirty-five years after the banning of DDT in the U.S., the bald eagle was removed from the ESA’s “threatened” list. Bald eagle populations declined dramatically in the last century, attributed mostly to the accumulation of the pesticide DDT in fish, a staple of the eagle’s diet. The pesticide gradually poisoned females, causing them to produce thinly-shelled eggs that broke easily, preventing the embryos from growing. Years of hunting, accidental poisoning and habitat loss took an additional toll. “The rescue of the bald eagle from the brink of extinction ranks among the greatest victories of American conservation.” said John Flicker, President of the National Audubon Society. “Like no other species, the bald eagle showed us all that environmental stewardship has priceless rewards. In every state, parents and grandparents can still point to the sky and share a moment of wonder as a bald eagle soars overhead.” The U.S. Fish and Wildlife Service (FWS) in 1967 listed the bald eagle as endangered, a designation that gave the bird legal protection from harmful human activities and in 1972, the U.S. Environmental […]

(Beyond Pesticides, June 26, 2007) According to the Northwest Coalition for Alternatives to Pesticides (NCAP), the federal government continues to allow toxic pesticides to poison endangered and threatened salmon and steelhead without complying with a federal court’s decision to protect these species from such poisonings. As a result, a 60-day notice of intent to sue has been issued to the National Marine Fisheries Service (NMFS), citing unreasonable delay. Despite the passage of almost five years since the first court ruling, NMFS has yet to identify a single measure needed to protect salmon and steelhead from toxic pesticides. Now, fishing and environmental groups are again asking NMFS to fulfill its responsibility to protect endangered Pacific salmon. Glen Spain of the Pacific Coast Federation of Fishermen’s Associations, a commercial fishing industry trade association that was a co-plaintiff in the original action against EPA, commented: “It just makes no sense for the very federal agency charged with recovering west coast salmon to still allow poisons in our rivers known to kill them. Inaction is no longer an option, and threatens the whole west coast salmon fishing economy.” Toxic pesticides have been found in every Northwest river and stream tested. Many rivers are contaminated […]

(Beyond Pesticides, June 22, 2007) The U.S. Senate (S.Res. 580) and the U.S. Department of Agriculture has designated June 24-30, 2007 as National Pollinator Week. This week has been designated to recognize the important work of pollinators and their role in ecosystem health. The Pollinator Partnership, sponsored by the North American Pollinator Protection Campaign (NAPPC) and their partners, has put together numerous resources and events all across the country to raise awareness and support for pollinators and pollinator-friendly practices. Pollinators include approximately 200,000 species of beneficial insects such as bees, flies, wasps, butterflies, to name a few, along with vertebrates such as bats, birds and small mammals. Pollination is the process of pollen transfer between flowering plants that leads to fertilization. Without pollination, most plants would be unable to produce fruits or seeds and many of the foods consumed would no longer be available. Pollinators are responsible for pollinating about 75 percent of all crop plants worldwide. This translates to approximately 20 billion dollars worth of food and medicinal products. Other animals and plants also rely on pollinators for food and shelter. Recent studies indicate that these important species are disappearing. Loss of habitat, diseases and the widespread use of […]

(Beyond Pesticides, June 19, 2007) Scientists investigating a mysterious die-off of many of the nation’s honeybees are concentrating on pesticides and microorganisms as possible causes of the disorder, and some beekeepers are refusing to place their hives near chemically treated fields out of fear that pesticides may be contributing to the die-off. Scientists from Penn State University and the U.S. Department of Agriculture are leading the research into the disease, which has killed tens of thousands of bee colonies in at least 35 states. The die-off has threatened the livelihood of commercial beekeepers and strained fruit growers and other farmers who rely on bees to pollinate more than 90 flowering crops, including apples, nuts and citrus trees. After months of study, researchers cannot tie the ailment to any single factor. But scientists have zeroed in on a new, unnamed pathogen found in the dead bees, and on the role of pesticides, said Maryann Frazier, a senior extension associate in the university’s entomology department. David Hackenberg was the first beekeeper to report the disorder to Penn State last fall after losing nearly 75 percent of his 3,200 colonies. He has since rebuilt his business to 2,400 colonies, but now asks growers […]

(Beyond Pesticides, June 4, 2007) The breakdown products (oxons) of the three most commonly used organophosphate pesticides in California’s agricultural Central Valley — chlorpyrifos, malathion and diazinon – are 10 – 100 times more toxic to amphibians than their parent compounds, which are already highly toxic to amphibians, according to a study released last Wednesday by scientists of Southern Illinois University, Carbondale, and the U.S. Geological Survey (USGS) Western Ecological Research Center. The results of the laboratory experiments on the toxicity of the three breakdown products were published in the journal Environmental Pollution. The title of the article is “Comparative toxicity of chlorpyrifos, diazinon, malathion and their oxon derivatives to larval Rana boylii.” “Since some of the parent pesticide compounds are already at concentrations sufficient to cause significant amphibian mortality in the Sierra Nevada, the higher toxicity of the breakdown products poses a serious problem,” said Gary Fellers, Ph.D., coauthor of the study. Donald Sparling, Ph.D., a research biologist and contaminants specialist at Southern Illinois University, and Dr. Fellers, a research biologist and amphibian specialist at the USGS Western Ecological Research Center in California, conducted laboratory tests to determine the acute toxicity – the lethal dosage causing death in 96 […]

(Beyond Pesticides, May 30, 2007) The Center for Biological Diversity today filed a lawsuit against the U.S. Environmental Protection Agency (EPA) for violating the Endangered Species Act (ESA). EPA has registered and allowed the use of 60 toxic pesticides in habitats for nearly a dozen San Francisco Bay Area endangered species without determining whether the chemicals jeopardize their existence. “Ending the use of known poisons in habitat for our most endangered wildlife is an appropriate 100th birthday tribute to Rachel Carson, who alerted us to the hazards of exposure to toxic chemicals almost half a century ago,” said Jeff Miller, conservation advocate with the Center. “Unfortunately the EPA has not learned from her legacy and still has no plan to adequately assess impacts while registering and approving pesticide uses that pose a clear and present danger both to imperiled species and human health.” At least 61 million pounds of pesticide active ingredients were applied in Bay Area counties from 1999 through 2005 ”” over 8.5 million pounds annually. Actual pesticide use may have been several times this amount since most home and commercial pesticide use is not reported to the state. Under the Bush administration, EPA has consistently failed to […]

(Beyond Pesticides, March 22, 2007) A federal magistrate judge in Providence, Rhode Island fined The Little Rhody Beagle Club Incorporated and its former president $28,144 for illegally using pesticides, guns and steel leg-hold traps to kill birds and other animals that were preying on the club’s stock of rabbits, which are used to train beagles. According to a report in the Providence Journal, the charges resulted from a joint investigation by the U.S. Fish and Wildlife Service, the Environmental Protection Agency and the Environmental Police of the state Department of Environmental Management. Members of the dog club were chiefly targeting birds of prey, which they say ate the stocked rabbits. Most of the other, non-target birds, all of them quite common, died from insecticide poisoning. None of the birds the club killed are listed on an endangered species list. However, the birds are still protected, according to Tom Healy, a spokesman for the U.S. Fish and Wildlife Service. He explains that virtually all birds in North America, including the ubiquitous robin and the squawking crow, are migratory and fall under the protection of the Migratory Bird Treaty Act. The club, which is located in Warwick, and its former president, William […]

(Beyond Pesticides, March 9, 2007) New research shows that frogs are more sensitive to hormone-disturbing environmental pollutants than was previously thought. Male tadpoles that swim in water with environmentally relevant levels of such substances become females, according to the study that will be published in the scientific journal Environmental Toxicology and Chemistry (ET&C) in May (See University Press Release). The results may shed light on at least one reason that up to a third of frog species around the world are threatened with extinction, suggests the study. In a laboratory experiment by researchers in Sweden, two species of frogs, the European common frog (Rana temporaria) and the African clawed frog (Xenopus tropicalis), were exposed to levels of oestrogen (estrogen or chemicals mimicking the effect of estrogen) similar to those detected in natural bodies of water in Europe, the United States and Canada.The results were startling: whereas the percentage of females in two control groups was under 50 percent – not unusual among frogs – the sex ratio in the groups of tadpoles who matured in water dosed with different levels of oestrogen were significantly skewed. Even tadpoles exposed to the weakest concentration of the hormone were, in one of the […]

(Beyond Pesticides, March 1, 2007) In 24 states throughout the country, beekeepers have been shocked to find that bees have been inexplicably disappearing at an alarming rate, according to an article in the New York Times last week. This loss of honeybees threatens not only beekeeper livelihoods but also the production of numerous crops, including California almonds, one of the nation’s most profitable crops. Although the reasons for the honeybee disappearances are unknown, pesticides may be one of the culprits. “I have never seen anything like it,” David Bradshaw, a California beekeeper, said. “Box after box after box are just empty. There’s nobody home.” Last month he discovered that half of his 100 million bees were missing. Beekeepers have fought regional bee crises before, but this is the first national affliction. Bees are flying off in search of pollen and nectar and simply never returning to their colonies. And nobody knows why. Researchers say the bees are presumably dying in the fields, perhaps becoming exhausted or simply disoriented and eventually falling victim to the cold. As researchers scramble to find answers to the syndrome they have decided to call “colony collapse disorder,” growers are becoming openly nervous about the capability […]

(Beyond Pesticides, February 27, 2007) Pesticide run-off is polluting larger areas of the Great Barrier Reef than originally thought, leading scientists to call for better land care practices. For the first time a new series of satellite images show that sediment plumes, containing pesticides and other pollutants from Australian river systems, travel to the outer Great Barrier Reef, and beyond. Originally, it was thought that the plumes only affected the inner Great Barrier Reef Lagoon and the inner reef corals. The images, taken during the heavy rains in far north Queensland by the National Aeronautics and Space Administration’s MODIS satellite, show the pollutant plumes are travelling up to 135km offshore. Recent studies have shown agricultural chemicals are so poisonous to coral that it can prevent spawning, even when only present in minuscule amounts. This was found to consequently hinder the reef’s ability to regenerate and protect itself. Arnold Dekker, Ph.D., a scientist with the Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO), said the images would change the way scientists analysed reef pollution and that they showed land care practices needed to be improved in order to save the reef from destruction. “This is the first time it’s been really […]

(Beyond Pesticides, February 1, 2007) Thirty-five years after the banning of DDT, extremely high concentrations of the pesticide are being found in fish caught in California’s Los Angeles county waters. According to a newly released federal survey by the National Oceanic and Atmospheric Administration (NOAA) and Environmental Protection Agency (EPA), the fish caught in the area contain the world’s highest-known DDT concentrations. The survey was conducted in order to update health advisories on which fish are unsafe to eat and to help EPA decide whether to attempt a costly operation to reduce continued contamination from a deposit of DDT on the ocean floor. The findings contradict the belief held by some scientists that DDT on the ocean floor has been breaking down into less-toxic compounds and would soon disappear from marine life. The contamination, most severe in the middle of San Redondo Bay, stems from a 100-ton deposit of DDT released by the Montrose Chemical Co. beginning in the late 1940s, which still covers several square miles of the ocean floor. The pesticide manufacturer had a plant near Torrance, California, from 1947 to 1971, releasing about 2,000 tons of DDT into county sewers that subsequently emptied into the ocean. The […]

(Beyond Pesticides, January 25, 2007) The commonly used herbicide atrazine has been found to have negative biological effects on phytoplankton-free-floating algae that forms the base of the food chain for aquatic animals. The study, published in the January 2007 issue of the journal Pesticide-Biochemistry and Physiology, indicates that protein levels in phytoplankton significantly decrease as a result of atrazine exposure, possibly having a negative affect on the nutritional levels of all aquatic species. The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science researchers exposed five algal species to atrazine levels within the range of concentrations measured in the estuarine environment. In the majority of the species tested, the amount of energy converted into protein from photosynthesis, the process by which green plants convert water and carbon dioxide into organic materials using solar energy, significantly decreased with increased exposure. Atrazine is one of the most heavily used herbicides in the United States, applied to a wide variety of crops including corn, sorghum, sugarcane, pineapple, and Christmas trees, as well as turf. It acts as an inhibitor of photosynthesis by preventing the transfer of energy in certain plant species. NOAA researchers observed significant decreases in the size of […]

(Beyond Pesticides, January 18, 2007) A new study conducted in Costa Rica’s mountain forests indicates that surprisingly high concentrations of pesticides are accumulating far above the low altitudes at which they are used. Previously thought to be safe from pesticides applied to distant agricultural areas, some remote mountain forests of Costa Rica were found to have pesticide levels almost ten times greater than those in low-lying areas closer to farms and plantations. The study, led by University of Toronto, Scarborough professor Frank Wania, Ph.D., measured air and soil pesticide levels at 23 sites across Costa Rica in order to produce a model to predict potential accumulation of chemicals at high altitudes. The insecticide endosulfan and the fungicide chlorothalonil were found in the largest concentrations, with up to 1 part per billion (ppb) of chlorothalonil and 3 ppb endosulfan in soil. The high concentrations can be explained by a process in which polluted air above the farms and plantations is pushed up into the mountains, where it then cools and becomes polluted rainwater or fog. The hydrophilic nature of modern pesticides makes the occurrence of this phenomenon much more likely; as Crispin Halsall, Ph.D., of Lancaster University (U.K.) explains, “Most currently […]