Introduced

Introduced

By University of Wisconsin Sea Grant InstituteScienceNatural SciencesNatureEarth Sciences
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Introduced episodes

  • 18. Moss balls and mystery seeds

    This week, we dive deep into two news stories that flew under the public’s radar. In the summer of 2020, individuals all over the country started receiving random packages of unsolicited and unidentified seeds. In the spring of 2021, pet stores around the country found that the moss balls on their shelves carried a notorious aquatic hitchhiker. On this episode, we talk to some of the people who devoted months of their lives to dealing with these first-of-their-kind international crises.  

    Special thanks to our guests Christopher Deegan, Wesley Daniels, Amy Kretlow and Amy McGovern.  

    Report a nonindigenous aquatic species - https://nas.er.usgs.gov/SightingReport.aspx

    Nonindigenous Aquatic Species Database - USGS - https://nas.er.usgs.gov/queries/default.aspx

    Destroy! Don’t dump! - Zebra Mussel Disposal - https://www.fws.gov/fisheries/ANS/zebra-mussel-disposal.html

    Hungry pests - Leave hungry pests behind - https://www.aphis.usda.gov/aphis/resources/pests-diseases/hungry-pests/hungrypests

    Zebra mussels - https://www.seagrant.wisc.edu/our-work/focus-areas/ais/invasive-species/invasive-species-fact-sheets/mollusks/zebra-mussels/

    Quagga mussels - https://www.seagrant.wisc.edu/our-work/focus-areas/ais/invasive-species/invasive-species-fact-sheets/mollusks/quagga-mussel/

    39 min
  • 17. Crayfish crisis (Rerun)

    On August 27, 2009, the Wisconsin Department of Natural Resources gets a call about small lobsters crawling around a neighborhood pond in Germantown. The extent of the problem is more than anyone bargained for.

    Thanks to our guests

    Tim Campbell, Wisconsin Sea Grant

    Pete Jopke, Wisconsin Department of Natural Resources

    Tim Zabel, initial sighter

    Heidi Bunk, Wisconsin Department of Natural Resources

    Scott Van Egeren, Wisconsin Department of Natural Resources

    Doug and Mary, Esquire Estates residents

    Jake Vander Zanden, University of Wisconsin-Madison

    Erin Vennie-Vollrath, (former) University of Wisconsin-Madison

    Chris Hamerla, Golden Sands Resource Conservation & Development

    Stephanie Peay, Independent crayfish researcher

    Read more

    Red Swamp Crayfish

    30 min
  • 16. The lake on the edge

    The miniscule Spiny waterflea was introduced into Madison’s Lake Mendota and lurked undetected for years. This hour, Bonnie and Sydney take a new look at a well-studied lake and try to figure out how an introduced species can float below science’s radar for so long.

    Thanks to our guests

    Jake Walsh, Minnesota Department of Natural Resources

    Dick Lathrop, Wisconsin Department of Natural Resources, University of Wisconsin-Madison

    Mike Spear, University of Wisconsin-Madison

    Read more

    Study: Stories of Invasive Species Often Begin with Undetected “Sleeper Populations”

    Too Hot? Too Cold? Just Right? Lakes Sharing the Same Climate Can Be Worlds Apart for Invasive Species

    Forget “Needle in a Haystack.” Try Finding an Invasive Species in a Lake

    Tiny Invasive Species Eats Enough to Devour an Entire City

    What Lies Beneath: Sudden Invasion of a Wisconsin Lake Wasn’t So Sudden After All

    39 min
  • 15. Faith and Wild Rice

    Wild rice faces challenges like introduced species, pollution, habitat destruction and climate change. We learn how the Sokaogon Chippewa Community cares for this wonderfully resilient being. Opinions of our guests do not necessarily reflect the opinions of the Sokaogon Chippewa Community Mole Lake Band of Lake Superior Chippewa.

    Thanks to our guests

    Sarah Dance, (former) Wisconsin Sea Grant

    Melonee Montano, Great Lakes Indian Fish and Wildlife Commission

    Nathan Podany, Sokaogon Chippewa Community

    Peter McGeshick III, Sokaogon Chippewa Community

    Read more

    Read More About Sarah Dance’s Research

    Sokaogon Chippewa Community

    Manoomin Education and Outreach Toolkit

    45 min
  • 13. On the scent

    Canines Betty White and Ernie are training to detect the scent of New Zealand Mudsnail, and Sydney goes bow hunting for flying carp. Also, we talk to a group that is trying to make carp burgers the next popular tailgating food.

    Thanks to our guests

    Laura Holder, Conservation Dogs Collective

    Amy Wagnitz, (former) Conservation Dogs Collective

    Betty White and Ernie, Conservation Dogs Collective

    Captain Nate Wallick, Peoria Carp Hunters

    Chris Litzau, Great Lakes Community Conservation Corps

    Read more

    New Zealand Mud Snail

    Silver Carp

    Water Hyacinth

    Asian carp – Silverfin™

    Why Does the State of Illinois Want to Rename Asian Carp? Racism and Economics

    59 min
  • 12. A borrowed fish

    Pacific salmon were introduced into the Great Lakes to control nuisance alewives. Now, alewives and salmon are both being challenged by a new wave of introduced species.

    Thanks to our guests

    Barb Carey, WI Women Fish, Women Ice Angler Project

    Brad Eggold, Wisconsin Department of Natural Resources

    Titus Seilheimer, Wisconsin Sea Grant

    Read more

    WI Women Fish

    Women Ice Angler Project

    Root River Steelhead Facility

    Automated Marking & Tagging Trailer

    47 min
  • 11. The snail next door

    Even the smallest snails can mean big changes for the region’s lakes and streams. We visit the Fond du Lac Band of Lake Superior Chippewa, where mystery snails encroach on wild rice, and track the spread of New Zealand mudsnail across Wisconsin trout streams.

    Thanks to our guests

    Kathryn Perez, University of Texas Rio Grande Valley

    Kelsey Taylor, Fond du Lac Band of Lake Superior Chippewa

    Ellen Voss, River Alliance of Wisconsin

    Nick Voss, Driftless Angler

    Bobbi Peckarsky, Black Earth Creek Watershed Association, University of Wisconsin-Madison

    Maureen Ferry, Wisconsin Department of Natural Resources

    Read more

    Key to Wisconsin Freshwater Snails

    Kelsey Taylor’s Snail Salsa Recipe

    Chinese Mystery Snail

    New Zealand Mud Snail

    53 min
  • 10. Peering through the smelt crystal ball

    Smelting became a beloved tradition after rainbow smelt were introduced into the Great Lakes. How did smelt get introduced, how do they fit into the food web and what happens when humans fall in love with a non-native species?

    Thanks to our guests

    Jared Myers, US Fish and Wildlife Service 

    Carolyn Swartz, Angler’s All 

    Titus Seilheimer, Wisconsin Sea Grant 

    Sara Hudson, Ashland Parks and Recreation 

    Read more

    Smelt Wrestling

    New Smelt Consumption Advisory for Lake Superior

    Trash Trunk: A Grab and Go Teaching Tool

    Teach Me About the Great Lakes podcast

    47 min
  • 9. Becoming "invasive"

    Who gets to decide where a species belongs? What does it mean for something to be “invasive?”

    The term “invasive species” is commonly used by researchers and academics. But as the authors of the Dibaginjigaadeg Anishinaabe Ezhitwaad – A Tribal Climate Adaptation Menu developed the indigenous resilience guide, they spent long hours reckoning with the term “invasive,” along with a slew of other Western terms like “climate change” and “management.” Next, we speak to scholar Paul Robbins, whose personal journey with invasive species started with a flat tire in Rajestan, India. Since then, he’s studied human interactions with nature and the politics of natural resource management. Lastly, we join a group of reptile and amphibian experts who are debating if a popular pet turtle species, the red-eared slider, should be listed as prohibited or restricted in Wisconsin’s invasive species law. 

    Thanks to our guests

    Paul Robbins, University of Wisconsin-Madison

    Tara Bergeson, Wisconsin Department of Natural Resources

    Jerry Jondreau and Katy Bresette, Dynamite Hill Farms

    Melonee Montano, Great Lakes Indian Fish and Wildlife Commission

    Sara Smith, College of Menominee Nation

    Davin Lopez, Wisconsin Department of Natural Resources

    Herptile Species Assessment Group members

    Mammals Species Assessment Group members

    Read more

    Dibaginjigaadeg Anishinaabe Ezhitwaad – A Tribal Climate Adaptation Menu

    Invasive species Rule NR-40

    57 min

About Introduced

From the publisher's feed

On Introduced, we tell stories about the Great Lakes, introduced species and the people working to protect our waters. The podcast is brought to you by Wisconsin Sea Grant, with support from the Great…