Nutria, Myocastor coypus, populations must be reduced when they cause substantial wetland damage. Control can include the rodenticide zinc phosphide, but the potential impacts to American alligators, Alligator mississippiensis, must be assessed. The mean amount of zinc phosphide per nutria found in nutria carcasses was 50 mg. Risk assessment determined that a conservative estimate for maximum e...

The anticoagulant brodifacoum is widely used overseas as a rodenticide, and in New Zealand to control rodents and brushtail possums (Trichosurus vulpecula). The efficacy, behavioural and pathological changes and times to death were compared between Norway rats (Rattus norvegicus) and brushtail possums poisoned with brodifacoum. Caged animals were given brodifacoum in wax or cereal baits, observ...

Aluminum phosphide is commonly used as a rodenticide and insecticide and is one of the most fatal poisons. The active ingredient is Phosphine gas which inhibits cytochrome oxidase and cellular oxygen utilization. The clinical symptoms are due to multiorgan involvement including cardiac toxicity which is the most common cause of mortality. Severity of clinical manifestations depends upon the amo...

Zinc phosphide has been used widely as a rodenticide. Upon ingestion, it gets converted to phosphine gas in the body, which is subsequently absorbed into the bloodstream through the stomach and the intestines and gets captured by the liver and the lungs. Phosphine gas produces various metabolic and nonmetabolic toxic effects. Clinical symptoms are circulatory collapse, hypotension, shock sympto...

Rodenticide or insecticide formulations in the form of syrups, jelly or pastes. Often applied to foods such as cookies, cakes, peanut butter or grain. Commercial preparations, such as ant traps, ant baits and rat poisons generally contain 0.5 1.0% thallium. In 1963, the federal government adopted legislation prohibiting the sale of thallium containing pesticides to the general public. In commer...

—Zinc phosphide has a long history of use and remains an important rodenticide for both commensal and select field rodents. A long list of significant characteristics contributes to its relative safety to nontarget species. It is zinc phosphide's relative safeness to humans, most livestock, and nontarget wildlife that has kept it in vogue, A most relevant and highly proclaimed characteristic is...

Terminal Programs in the Graduate Schools: DR. Discussion: CARD E. SEASHORE ................................................. 213 "Ten-Eighty," a War-produced Rodenticide: E. Obituary: R. KALMBACH. Pectin Intravenously: DR. W. C. HUEPER. "Isosensitivity" Instead of "IsoimmuRoscoe Gilkey Dickinson: DR. LINUS PAULING. nity": DR. ELMER L. DEGOWIN. The Gulf HamAlbert Edward Edgecombe: PROFESSOR HAN...