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Secondary Poisoning
Secondary poisoning, or relay toxicity, is the poisoning that results when one organism comes into contact with or ingests another organism that has poison in its system. It typically occurs when a predator eats an animal, such as a mouse, rat, or insect, that has previously been poisoned by a commercial pesticide. If the level of toxicity in the prey animal is sufficiently high, it will harm the predator. Mammals susceptible to secondary poisoning include humans, pets such as cats and dogs, as well as wild birds. Pesticides Various pesticides such as rodenticides may cause secondary poisoning.Rodenticides: Topic Fact Sheet


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Organism
In biology, an organism () is any living system that functions as an individual entity. All organisms are composed of cells (cell theory). Organisms are classified by taxonomy into groups such as multicellular animals, plants, and fungi; or unicellular microorganisms such as protists, bacteria, and archaea. All types of organisms are capable of reproduction, growth and development, maintenance, and some degree of response to stimuli. Beetles, squids, tetrapods, mushrooms, and vascular plants are examples of multicellular organisms that differentiate specialized tissues and organs during development. A unicellular organism may be either a prokaryote or a eukaryote. Prokaryotes are represented by two separate domains – bacteria and archaea. Eukaryotic organisms are characterized by the presence of a membrane-bound cell nucleus and contain additional membrane-bound compartments called organelles (such as mitochondria in animals and plants ...
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National Pesticide Information Center
The National Pesticide Information Center (NPIC) is a collaboration between Oregon State University and the United States Environmental Protection Agency to provide objective, science-based information about pesticides, the recognition and management of pesticide poisonings, toxicology and environmental chemistry. It is funded through a cooperative agreement that is competitively awarded to an eligible applicant every 3–5 years. It was previously known as the National Pesticide Telecommunication Network. History The program was first established in 1978 as a toll free telephone service at the Texas Tech University Health Sciences Center to assist medical professionals with the recognition and management of pesticide poisonings. The service was later expanded to the general public. In the mid 1980s the NPIC moved to Texas Tech University and became the National Pesticide Telecommunications Network. In 1995 the program was moved to Oregon State University (OSU) and the name was lat ...
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Fluoroacetate
Fluoroacetate may refer to: * Fluoroacetic acid * Sodium fluoroacetate Sodium fluoroacetate is an organofluorine chemical compound with the formula FCH2CO2Na. This colourless salt has a taste similar to that of sodium chloride and is used as a rodenticide. History and production The effectiveness of sodium fluoroa ... {{Short pages monitor ...
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Bromethalin
Bromethalin is a neurotoxic rodenticide that damages the central nervous system. History Bromethalin was discovered in the early 1980s through an approach to find replacement rodenticides for first-generation anticoagulants, especially to be useful against rodents that had become resistant to Warfarin-type anticoagulant poisons. A structured study was undertaken to develop a substance that would be both poisonous to rodents, but also would be readily eaten by rodents. Bromethalin—N-methyl-2,4- dinitro-N ( 2,4,6-tribromophenyl)-6-(trifluoromethyl) benzeneamine— was the outcome of that study, as the specific formulation had both desired rodenticidal properties. Mechanism of action Bromethalin works by being metabolised to n-desmethyl-bromethalin and uncoupling mitochondrial oxidative phosphorylation, which causes a decrease in adenosine triphosphate (ATP) synthesis. The decreased ATP inhibits the activity of the Na/K ATPase enzyme, thereby leading to a subsequent buildup of c ...
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Diphacinone
Diphenadione is a vitamin K antagonist that has anticoagulant effects and is used as a rodenticide against rats, mice, voles, ground squirrels and other rodents. The chemical compound is an anti-coagulant with active half-life longer than warfarin and other synthetic 1,3-indandione anticoagulants.Meister, R.T. (ed.). 1992. Farm Chemicals Handbook '92. Meister Publishing Company, Willoughby, OH. It is toxic to mammals, in all forms; exposure and oral ingestion of the toxin may cause irregular heartbeat and major maladies associated with its impact on blood clotting, depending on dose.Bell Laboratories, Inc. July, 1990. Diphacinone Technical: MSDS. Bell Labs, Madison, WI. As a "second-generation" anticoagulant, diphenadione is more toxic than the first generation compounds (e.g., warfarin). For purposes of treating toxicity on exposure, diphenadione is grouped with other vitamin K antagonists (coumarins and indandiones); despite being directed at rodents and being judged as less h ...
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Chlorophacinone
Chlorophacinone is an anticoagulant used as a rodenticide. It is classified as an extremely hazardous substance in the United States as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act The Emergency Planning and Community Right-to-Know Act of 1986 is a United States federal law passed by the 99th United States Congress located at Title 42, Chapter 116 of the U.S. Code, concerned with emergency response preparedness. On October ... (42 U.S.C. 11002) and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities. See also * 1,3-Indandione References Pesticides Indandiones Chloroarenes Anticoagulant rodenticides {{ketone-stub ...
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Brodifacoum
Brodifacoum is a highly lethal 4-hydroxycoumarin vitamin K antagonist anticoagulant poison. In recent years, it has become one of the world's most widely used pesticides. It is typically used as a rodenticide, but is also used to control larger pests such as possum.Eason, C.T. and Wickstrom, M. ''Vertebrate pesticide toxicology manual'', New Zealand Department of Conservation Brodifacoum has an especially long half-life in the body, which ranges up to nine months, requiring prolonged treatment with antidotal vitamin K for both human and pet poisonings. It has one of the highest risks of secondary poisoning to both mammals and birds.Rodenticides: Topic Fact Sheet


Difethialone
Difethialone is an anticoagulant used as a rodenticide. It is considered a second generation agent. In May 2008, the EPA The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ... added restrictions on the sale of difethialone in consumer-use rodenticide products and also for exterior use by commercial applicators. References Rodenticides Bromoarenes Thiochromanes Tetralins Biphenyls Anticoagulant rodenticides {{organic-compound-stub ...
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Bromadiolone
Bromadiolone is a potent anticoagulant rodenticide. It is a second-generation 4-hydroxycoumarin derivative and vitamin K antagonist, often called a "super-warfarin" for its added potency and tendency to accumulate in the liver of the poisoned organism. When first introduced to the UK market in 1980, it was effective against rodent populations that had become resistant to first generation anticoagulants. The product may be used both indoors and outdoors for rats and mice. It is classified as an extremely hazardous substance in the United States as defined in Section 302 of the Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities. Toxicity Bromadiolone can be absorbed through the digestive tract, through the lungs, or through skin contact. The pesticide is generally given orally. 10 mg/kg b.w. (oral MTD) * cats > 25 mg/kg b.w. (o ...
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Warfarin
Warfarin, sold under the brand name Coumadin among others, is a medication that is used as an anticoagulant (blood thinner). It is commonly used to prevent blood clots such as deep vein thrombosis and pulmonary embolism, and to prevent stroke in people who have atrial fibrillation, valvular heart disease, or artificial heart valves. Less commonly, it is used following ST-segment elevation myocardial infarction and orthopedic surgery. It is generally taken by mouth, but may also be used intravenously. The common side effect is bleeding. Less common side effects may include areas of tissue damage and purple toes syndrome. Use is not recommended during pregnancy. The effects of warfarin typically should be monitored by checking prothrombin time (INR) every one to four weeks. Many other medications and dietary factors can interact with warfarin, either increasing or decreasing its effectiveness. The effects of warfarin may be reversed with phytomenadione (vitamin K1), fresh f ...
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Rodenticides
Rodenticides are chemicals made and sold for the purpose of killing rodents. While commonly referred to as "rat poison", rodenticides are also used to kill mice, squirrels, woodchucks, chipmunks, porcupines, nutria, beavers, and voles. Despite the crucial roles that rodents play in nature, there are times when they need to be controlled. Some rodenticides are lethal after one exposure while others require more than one. Rodents are disinclined to gorge on an unknown food (perhaps reflecting an adaptation to their inability to vomit), preferring to sample, wait and observe whether it makes them or other rats sick. This phenomenon of poison shyness is the rationale for poisons that kill only after multiple doses. Besides being directly toxic to the mammals that ingest them, including dogs, cats, and humans, many rodenticides present a secondary poisoning risk to animals that hunt or scavenge the dead corpses of rats. Classes of rodenticides Anticoagulants Anticoagulants ar ...
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Poison
Poison is a chemical substance that has a detrimental effect to life. The term is used in a wide range of scientific fields and industries, where it is often specifically defined. It may also be applied colloquially or figuratively, with a broad sense. Whether something is considered a poison may change depending on the amount, the circumstances, and what living things are present. Poisoning could be accidental or deliberate, and if the cause can be identified there may be ways to neutralise the effects or minimise the symptoms. In biology, a poison is a chemical substance causing death, injury or harm to organisms or their parts. In medicine, poisons are a kind of toxin that are delivered passively, not actively. In industry the term may be negative, something to be removed to make a thing safe, or positive, an agent to limit unwanted pests. In ecological terms, poisons introduced into the environment can later cause unwanted effects elsewhere, or in other parts of the food ...
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