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Explore every episode of the podcast Introduced

Dive into the complete episode list for Introduced. Each episode is cataloged with detailed descriptions, making it easy to find and explore specific topics. Keep track of all episodes from your favorite podcast and never miss a moment of insightful content.

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TitlePub. DateDuration
20. Names that rock11 Nov 202400:45:57
Bonus: The Prince Fish20 Dec 202300:13:16

SPECIAL ANNOUNCEMENT: Introduced will be returning for a new season in 2024!

But in the meantime, we're sharing a fascinating, fishy episode from our friends at Points North, an award-winning podcast about the land, water and inhabitants of the Great Lakes.

In October 1960, Prince Akihito of Japan visited Chicago for 21 hours. Chicago’s mayor presented the prince with a diplomatic gift: 18 bluegill. What happened next would change the underwater world of Japan forever.

12. A borrowed fish31 Mar 202100:46:57

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 FishWomen 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

11. The snail next door24 Mar 202100:52:09

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 AssociationUniversity 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

10. Peering through the smelt crystal ball17 Mar 202100:46:59

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

9. Becoming "invasive"09 Mar 202100:56:03

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

BONUS: The Claws Have the Sweetest Meat03 Mar 202101:08:59

We’re excited to share an episode of Teach Me About the Great Lakes featuring the Introduced team! This episode is all about invasive species generally, and invasive crayfish specifically. TMAGL speaks again with Dr. Brian Roth about his work on invasive crayfish and with IISG’s own Greg Hitzroth about the Invasive Crayfish Collaborative. Plus, in a special bonus, we speak with the hosts of Introduced, a highly produced, episodic podcast about invasive species from our colleagues at Wisconsin Sea Grant.

Today’s guests are Dr. Brian Roth of Michigan State University, Greg Hitzroth of Illinois-Indiana Sea Grant, and the producers of the Introduced podcast: Bonnie Willison, Sydney Widell, and special guest Tim Campbell.

Read more

IISG’s Aquatic Invasive Species Page

Invasive Crayfish Collaborative Google Group

Optimus Prime

Red Swamp Crayfish

Michigan DNR: Red Swamp Crayfish

Virile Crayfish

Crayfish Plague

USGS: Rusty Crayfish

An Interview with Reuben Keller About His Work

Aquatic Invaders in the Marketplace: A Website on Organisms in Trade

Field Guide to Michigan Crayfish

ICC Discussion on Crayfish ID

Purchase the Field Guide to Crayfishes of the Midwest Book

http://invasivecrayfish.org

http://rothlabmsu.com

Brian’s Twitter Feed

Greg’s Twitter Feed

Credits

Host & Executive Producer: Stuart Carlton

Cohosts: Carolyn Foley

Producers: Hope Charters, Carolyn Foley, Megan Gunn, & Irene Miles

Associate Producer: Ethan Chitty

Music by: Stuart Carlton

8: Crayfish crisis22 Jul 202000:53:31

On August 25, 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. Here’s the story of the first red swamp crayfish introduced into Wisconsin.

Special 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

7: Invasives online15 Jul 202000:42:19

After a dive into the world of fish collectors and a conversation with a DNR detective, Bonnie and Sydney want to know just how easy it is to buy aquatic invasive species online.

Special thanks to our guests Ted Judy, Robert Stroess, Tim Campbell and Erika Jensen.

Read more

Water Lettuce

Water Hyacinth

Red Swamp Crayfish

6. Flipped08 Jul 202000:38:16

Bold plans to remove invasive species lead to some unintended consequences down the line.  

Special thanks to our co-host Tim Campbell, and our guests Dr. Dick Lathrop and Dr. Greg Sass. 

Read More:

Water Clarity Responses to Carp Reduction in Shallow Eutrophic Lake Wingra

Without the Carp, Lake Wingra Cleans Up

Watch REU Student Ellen Heyn’s Movie Crystal Lake Mixing on YouTube

Mixing Experiment Helps Remove Ninety Percent of Invasive Smelt From Crystal Lake

 Find Wisconsin Sea Grant in all of the following places: 

Wisconsin Sea Grant: seagrant.wisc.edu 

Wisconsin Water Resources Institute: wri.wisc.edu 

Facebook 

Twitter 

5. From revered to reviled (Invasive Carp part 2)23 Jun 202000:38:06

How does a group of fish valued in their home range come to be some of America’s most reviled villains? Sydney and Bonnie explore a surprising collaboration between American and Chinese researchers, and see how Ontario is bracing for an Asian Carp introduction.

Special thanks to our guests Duane Chapman, Dr. Yushun Chen, and Rebecca Schroeder.

Flying Fish, Great Dish Video Featuring Duane Chapman

Asian Carp Recipes From Illinois-Indiana Sea Grant

More on the Modified Unified Method

Identifying Bighead, Silver, Black, and Grass Carp

Up-to-Date Information About Asian Carp in the US

Find Wisconsin Sea Grant in all of the following places: 

Wisconsin Sea Grant: seagrant.wisc.edu 

Wisconsin Water Resources Institute: wri.wisc.edu 

Facebook 

Twitter 

4. The carp are coming (Invasive Carp part 1)17 Jun 202000:47:40

Wisconsin Sea Grant takes a trip to the world’s largest electric fish dispersal barriers, just south of Chicago. These barriers are sending electricity into the canal for one purpose- to keep Asian Carp from swimming into the Great Lakes.

EDIT: In this episode, we state that the dense and reproducing carp population is 20 miles downstream of the electric carp barriers. This is incorrect – the dense and reproducing Asian Carp population is located 100 miles downstream of the barriers in the Peoria and La Grange pools of the Illinois River.

Special thanks to our guests Duane Chapman, Tim Campbell, Kevin Irons, Elena Blevins and Titus Seilheimer. Thank you to the US Army Corps of Engineers and Chuck Shea for a tour of the electric barriers.

 How to identify Bighead, Silver, Black, and Grass Carp: http://www.dfo-mpo.gc.ca/species-especes/profiles-profils/asiancarp-carpeasiatique-eng.html 

 Up-to-date information about Asian Carp in the US: http://asiancarp.us/ 

 

Find Wisconsin Sea Grant in all of the following places: 

Wisconsin Sea Grant: seagrant.wisc.edu 

Wisconsin Water Resources Institute: wri.wisc.edu 

Facebook 

Twitter 

Introducing: The Water We Swim In08 Jun 202200:29:11

Today, we’re introducing a new podcast from Wisconsin Sea Grant called The Water We Swim In, which features stories about the Great Lakes and the people working toward equity.

On “Hidden Currents,” Bonnie Willison and Hali Jama dive beneath the water to explore why Black children are drowning more than any other race, why marginalized communities often lack access to swimming pools, and how to stay safe in the water. We hear about the alarming trend facing swimming pools in cities across the nation, relive a fight to save one Milwaukee pool, and walk the shores of Lake Michigan with the Beach Ambassador program. Join us as Brenda Coley, Jumana Tanner, Cheryl Bledsoe, Sally Callan, and Deidre Peroff discuss how racism, segregation and redlining has taken away Black people’s access to water and, essentially, the right to swim.

Find The Water We Swim In here


3. Bringing home the Beetles10 Jun 202000:47:34

When a showy, fuchsia plant runs amok in Wisconsin wetlands, researchers send a tiny beetle to the rescue. But the beetle isn’t native here, either.    

Identifying Purple Loosestrife 

Beetle Smorgasbord and other resources for teachers 

Raising your own beetles 

 Special thanks to our guests Molly Bodde, Tim Campbell, Brock Woods and Jeanne Scherer. 

 Find Wisconsin Sea Grant in all of the following places: 

Wisconsin Sea Grant: seagrant.wisc.edu 

Wisconsin Water Resources Institute: wri.wisc.edu 

Facebook 

Twitter 

2. The ones that live in your house03 Jun 202000:45:03

While on a field trip, a UW-Madison class discovers a feral goldfish in a local stream. Their find is only the beginning of Wisconsin’s pet problems.  

Special thanks to our guests Rob Mooney, Ben Martin, Dr. John Lyons, and Jamie Kozloski. 

 Ben and Rob’s goldfish find: https://blog.limnology.wisc.edu/2019/04/23/students-solve-case-of-the-mystery-fish-on-uw-madison-fieldtrip/ 

 Habitattitude: https://www.habitattitude.net/ 

 Kingdom Animalia Exotic Animal Rescue: https://www.facebook.com/Kingdom-Animalia-Exotic-Animal-Rescue-348867648486080/ 

 

Find Wisconsin Sea Grant in all of the following places: 

Wisconsin Sea Grant: seagrant.wisc.edu 

Wisconsin Water Resources Institute: wri.wisc.edu 

Facebook: facebook.com/UWiscSeaGrant 

Twitter: twitter.com/UWiscSeaGrant 

1. Crayfish, cargo and chaos: How we got here27 May 202000:52:55

Bonnie takes a time travel tour of the Great Lakes while Sydney follows scientists on a decades-long quest to decipher a Wisconsin legend.

Special thanks to our guests Dr. Dick Lathrop, Carol Warden, Tim Campbell, and Titus Seilheimer.

Read more

Aquatic invasive species

Introduced Trailer21 May 202000:01:05
Introduced, a new podcast from Wisconsin Sea Grant, is all about aquatic invaders and stories from our changing waters. Subscribe on iTunes, Spotify, or Google Play.
19. Listening through time01 Jul 202100:41:38
Today, on the last episode of season two, we’re talking about climate change, which threatens to upend everything western science understands about native and invasive species.   First, we join the Great Lakes Indian Fish & Wildlife Commission climate change team as they carefully observe the seasonal relationships between all the beings in the forest. Then we talk to the Tribal Climate Adaptation Menu team, who are helping tribal nations find ways to assert their knowledge and adapt to climate change. Finally, we step back 20,000 years to see what paleoecology can teach us about how species move as the climate changes.  Thank you to our guests Rob Croll, Hannah Panci, Sara Smith, Jerry Jondreau and Jack Williams.  GLIFWC’s Climate Change Program  - http://glifwc.org/ClimateChange/
GLIFWC’s Phenology study  - http://glifwc.org/ClimateChange/PhenologyStudy.html
Dibaginjigaadeg Anishinaabe Ezhitwaad - A Tribal Climate Adaptation Menu  - http://www.nicrn.org/tribal-climate-adaptation-menu.html
More on climate change impacts in Wisconsin  - https://wicci.wisc.edu/wisconsin-climate-trends-and-projections/
18. Moss balls and mystery seeds16 Jun 202100:38:22

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/

17. Crayfish crisis (Rerun)26 May 202100:30:00

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

16. The lake on the edge12 May 202100:39:00
15. Faith and Wild Rice28 Apr 202100:44:13

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

14. Introduced: An appetizer21 Apr 202100:27:50

Sydney debriefs Bonnie on what it was like to filet her very first fish, which happened to be a silver carp.

Read more

Cooking Silver Carp

13. On the scent07 Apr 202100:58:54

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

22. The story of starry10 Feb 202500:44:05

When starry stonewort was first discovered in a Wisconsin lake, alarm set in—officials scrambled, residents feared the worst, and drastic measures were taken. But ten years later, an unexpected truth has emerged: sometimes, the best response to an invasive species is to do less, not more. In this episode, we unravel the science behind how humans react to new invaders, challenge fear-based messaging, and explore the power of waiting and watching.

Looking for ways to tone down your language around aquatic invasive species? Here are some helpful phrases created by our guest Jeanne Scherer:

Non-native species are known to have varying degrees of impacts depending on the specific waterbody they are found in, and in some cases are able to integrate into a waterbody to the extent where actual documented impacts are minimal and active management may not be necessary. 

Reporting invasive species is a first step in containing their spread. Maintaining and restoring our waters and landscapes can reduce the impacts even when we don’t have other management options to an invasive species.

Transcript available here.

Special thanks to our guests:

Paul Skawinski, UW-Stevens Point Extension Lakes

Tom Reck, former Little Muskego Lake District chairperson

Bret Shaw, University of Wisconsin-Extension, University of Wisconsin-Madison

Jeanne Scherer, University of Wisconsin-Extension and University of Wisconsin-Madison

Learn more:


Bonus Episode: Dirty Laundry, Invasive Species, and the Limitations of Knowledge13 Jan 202500:13:35

Today, we’re airing a bonus episode from Points North, a podcast about the land, water, and inhabitants of the Great Lakes from Interlochen Public Radio.

Invasive species often spread by hitching a ride on anglers, especially anglers who don’t clean their gear after fishing. Though this is widely known, research suggests many anglers still don’t clean, even though it protects the very thing they’re after – fish. So, can anything be done to change their minds? Hear about New Zealand Mudsnail in Michigan.

Transcript available here.

Credits

Producer / Host: Dan Wanschura

Editor: Morgan Springer

Music: Fifteen Street, Our Only Lark, Silent Ocean, and Sweeper by Blue Dot Sessions

21. The beetle, the fabric, and the seamstress16 Dec 202400:39:22

How can art help communicate invasive species science? Today, we’ll meet an artist on a journey to turn some thrifted fabric into a biocontrol bug that is larger than life!

Transcript

Special thanks to our guests:

Astrid Hooper Loften, Artist, UW-Madison’24

Jeanne Scherer, University of Wisconsin-Extension and University of Wisconsin-Madison

Learn more:

The FLOW Project 

Astrid’s Cella Beetle Project

Tim’s tent

Information about purple loosestrife biocontrol

23. A new lens12 Mar 202500:33:25

What happens when we look at invasive species through the lens of art? In this episode, Jenna takes us to an immersive art exhibit that reimagines Lake Michigan’s invasive species challenges in a surreal, sci-fi-inspired world. 

Transcript available here.

Special thanks to our guests:

Anne Moser, Wisconsin Sea Grant

Daniel Murray, Fuzz Pop Workshop

Amanda Schmitz, AIS Coordinator, Washington County

Patrick Siwula, Southeast Region Aquatic Invasive Species Coordinator, Wisconsin Department of Natural Resources


Learn more:

Deep Lake Future


25. The seventh graders who changed Wisconsin's lakes22 May 202500:45:25

We uncover the story of how a popular watercraft inspection program (Clean Boats, Clean Waters) evolved from a middle school science project in Northern Wisconsin. 

Transcript available here.

Resources:

Get involved in Clean Boats, Clean Waters

Get involved in the Great Lakes Landing Blitz

Boats per capita in the US

Christopher Columbus Fellowship Foundation grants

Eurasian watermilfoil

Eurasian watermilfoil spread - interactive map

Timeline of AIS introductions and policy in Great Lakes region

Invasive species rule NR 40



Special thanks to our guests:

Maree Stewart, student award winner

Lisa Ahlers, former teacher, Minocqua, Wisconsin

Laura Marquart, formerly University of Wisconsin-Extension Lakes

Erin McFarlane, Extension Lakes

Bijit Khadka, University of Wisconsin-Madison


And thanks to our other contributors:

Sandy Wickman, formerly Wisconsin Department of Natural Resources

Bob Korth, formerly Extension Lakes

Judi Fellows, CBCW inspector

Linda Bogdala, CBCW inspector

Keith Montgomery, CBCW coordinator

Mary Doden, CBCW coordinator

24. When life hands you carp10 Apr 202500:28:29

When life gives you lemons, you make lemonade; when life gives you carp, you make carp pants! Meet Kim Boustead, who turns invasive species into art. From buckthorn ink to fish leather, Kim shares her journey of transforming unwanted materials into useful creations.

Transcript available here.

Special thanks to our guest:

Kim Boustead, artist, graphic designer and master naturalist

Learn more:

Kim’s website

Kim’s Instagram

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