Product Registration Unit
John D. Eisemann, Technology Transfer Manager
New APHIS Pesticide Product Registrations—APHIS registered two new rodenticide products through the EPA in 2007 with the assistance of the U.S. Fish & Wildlife Service (FWS) and a nongovernmental organization. These products, “Brodifacoum-25W Conservation” (EPA Reg. No. 56228-36) and “Brodifacoum-25D Conservation” (EPA Reg. No. 56228-37), are intended to be used for conservation purposes, specifically the eradication of invasive rodents on islands and unmanned derelict ships. Hawaii granted a state registration for Diphacinone 50 Conservation in 2007, and WS and FWS conducted an eradication project on Mokapu Island in February 2008. Rodent monitoring on the island will continue for two years to ensure the eradication effort was successful. Alaska approved the registration of Brodifacoum 25W Conservation to conduct a rat eradication project on Rat Island in the Aleutian Islands in September 2008. These two new products, along with Diphacinone-50: Conservation” (EPA Reg. No. 56228-35) registered in June 2007, are vital tools in the efforts to protect native wildlife on islands from invasive rodents.
The California Department of Food and Agriculture (CDFA) requested that APHIS modify the “Zinc Phosphide Concentrate label (EPA Reg. 56228-6) to help control California voles in artichoke fields. In a cooperative effort, the CDFA provided all of the data needed to ensure product efficacy and worker safety, and APHIS submitted a label amendment request to EPA in 2007 that was approved in March 2008. In addition to this label modification, APHIS submitted a request to EPA to allow use of this product in food and feed crops, including alfalfa, barley, dry beans, sugar beets, and wheat.
Wildlife Contraceptives—NWRC is a world leader in the development of effective wildlife contraceptives. The first APHIS contraceptive positioned for registration with the EPA is GonaCon™, an immunocontraceptive vaccine based on gonadotropin-releasing hormone. GonaCon is the first immunocontraceptive vaccine to provide multiple years of infertility following a single injection. NWRC's Registration Unit will soon submit the registration application for controlling fertility in white-tailed deer to the EPA. The Registration Unit has also worked closely with NWRC scientists and cooperators to field test GonaCon in prairie dogs and tree squirrels. If successful, NWRC may seek EPA registrations for these species.
APHIS has two EPA Experimental Use Permits (EUPs) to test GonaCon in other cervid species, such as deer and elk. EPA approved an EUP in July 2007 for a study NWRC is conducting in cooperation with the U.S. National Park Service (NPS) at Point Reyes National Seashore in California. The purpose of the study is to evaluate the efficacy of GonaCon on fallow deer. EPA approved another EUP in November 2007 for NWRC to test GonaCon™ in elk in the RMNP. The testing of GonaCon for reproductive control of overabundant elk is one part of a study to manage elk population health and abundance in the RMNP. This study is a cooperative effort among NWRC, CSU, and the Colorado Division of Wildlife.
Predacide Petition Under Consideration with EPA — In November 2007, the EPA sought public comment on a petition the agency received to cancel the registrations for sodium cyanide and sodium fluoroacetate for predator control. WS is authorized by Congress to manage a program to reduce human/wildlife conflicts, including depredations by livestock predators. Currently, WS uses sodium cyanide capsules in M-44 devices and sodium fluoroacetate (Compound 1080) in the livestock protection collar (LPC) as tools in an integrated wildlife damage management (IWDM) program, primarily to control predators impacting livestock production.
To provide input on the petition, APHIS assembled a task force to prepare a comprehensive WS response. The task force was led by APHIS WS Operational Support Staff and included representatives from WS Operations, USDA Agricultural Research Service, APHIS Policy and Program Development, The response submitted to EPA detailed the IWDM program, compliance and recordkeeping, WS use patterns of M-44s and LPCs, the economics of predator management, and human and pet health and safety as it relates to M-44 and LPC use. The NWRC Invasive Species and Technology Development (ISTD) Program, including the Registration Unit and the Economics Project, provided evaluations of the health and safety and economic impacts of M-44 and LPC use. APHIS expects an EPA decision on this petition by the end of 2008.