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National Invasive Species Information Center
U.S. Department of Agriculture

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Displaying 1261 to 1280 of 1361

  • Weed Alerts: Melaleuca

    • Florida Fish and Wildlife Conservation Commission.

  • Weed Alerts: Old World Climbing Fern

    • Florida Fish and Wildlife Conservation Commission.

  • Weed Alerts: Water Hyacinth

    • Florida Fish and Wildlife Conservation Commission.

  • Weed Alerts: Water-lettuce

    • Florida Fish and Wildlife Conservation Commission.

  • Weed Alerts: Water-spinach

    • Florida Fish and Wildlife Conservation Commission.

  • Weed Control Authority

    • Lancaster County (Nebraska).

  • Weed Management

    • La Plata County (Colorado).

  • West Nile Virus

    • Michigan Department of Natural Resources.

  • West Nile Virus Control Program

    • Pennsylvania Department of Environmental Protection.

  • Wetland Invasive Species

    • Wisconsin Department of Natural Resources.

  • What Is Your Wood Hiding?

    • Maine Department of Agriculture, Conservation, and Forestry. Maine Forest Service.

    • Moving firewood can transport exotic insects & diseases that pose a serious threat to our forests. Don't transport firewood -- BURN IT WHERE YOU BUY IT!

  • What You Can Do: How to Protect Your Citrus Trees

    • California Department of Food and Agriculture. Citrus Pest and Disease Prevention Program.

    • The Asian citrus psyllid and citrus greening (Huanglongbing) could be a death sentence for California citrus trees - but with support from California residents, we can save the citrus trees that we all know and love.

  • Whatcom Weeds: Curly-Leaf Pondweed [PDF, 361 KB]

  • Where Are They Now? Monitoring Firewood-Vectored Invasive Forest Pests in North Carolina [PDF, 875 KB]

    • North Carolina Department of Agriculture and Consumer Services. North Carolina Forest Service.

    • Emerald ash borer, laurel wilt disease, thousand cankers disease, and the European gypsy moth are likely to be brought into North Carolina in or on firewood. The use of local firewood is an important factor in preventing the spread of potentially devastating invasive species to our state's forests. Please keep this in mind as you prepare for your outdoor recreation activities. See Forest Health Invasive Pest Maps for more information about pest monitoring.

  • Whirling Disease and Oregon's Trout and Salmon

    • Oregon Department of Fish and Wildlife.

  • Whirling Disease in Utah

    • Utah Department of Natural Resources. Division of Wildlife Resources. 

  • White-nose Syndrome and Minnesota's Bats

    • Minnesota Department of Natural Resources.

  • White-Nose Syndrome Confirmed in Bat in Texas

    • Mar 5, 2020

    • Texas Parks and Wildlife Department.

    • For the first time, Texas Parks and Wildlife Department (TPWD) biologists have confirmed the disease white-nose syndrome (WNS) in a Texas bat. Up until this point, while the fungus that causes the disease was previously detected in Texas in 2017, there were no signs of the disease it can cause. WNS has killed millions of hibernating bats in the eastern parts of the United States, raising national concern. WNS is a fungal disease only known to occur in bats and is not a risk to people. However, bats are wild animals and should not be handled by untrained individuals. The public is encouraged to report dead or sick bats to TPWD at nathan.fuller@tpwd.texas.gov for possible testing.

  • White-Nose Syndrome in Bats

    • Idaho Department of Fish and Game.

    • White-nose syndrome (WNS) is a disease that is identified by the telltale white fungus growing on the noses of some infected bats while they hibernate. The Idaho Department of Fish and Game is asking the public to report the sighting of any active or dead bats during winter. Please call 208-454-7638 to report sightings. Idaho Fish and Game would also like to know of any sites that have hibernating bats so biologists can include them in the monitoring effort. Finally, the public is asked to not disturb hibernating bats and to respect cave closures.

  • White-Nose Syndrome in Bats

    • Indiana Department of Natural Resources.

    • White-nose syndrome (WNS) is an infectious disease responsible for unprecedented levels of mortality among hibernating bats in North America. WNS was first detected in Indiana in January 2011 during routine winter hibernacula surveys conducted by Division of Fish and Wildlife bat biologists. WNS is widely distributed throughout much of the karst region in south-central Indiana and locally established within most of the state's major concentrations of important bat hibernacula.