For Great Lakes mudpuppies in decline, new Canadian research is a bright spot
Mudpuppies like this one are growing scarcer in the Great Lakes. Photo: C Valentine, via Flickr
By Jeff Gillies, jeffgillies@gmail.com
Great Lakes Echo
June 26, 2009
A bizarre salamander and the endangered, clam-like mussel that relies on it got good news recently from Canadian scientists.
Federal researchers found an apparently stable population of mudpuppies in Ontario’s Sydenham River. The research is published in the June issue of the Journal of Great Lakes Research.
Mudpuppies are native to the Great Lakes and have beady eyes, slimy skin and feathery gills sticking out of their necks.
“I find them very interesting animals, but I can see why the general public wouldn’t rate them up there with bluebirds,” said Jim Harding, herpetology specialist at the Michigan State University Museum.
Most of the mudpuppies found in the Sydenham were young, which suggests that the population is stable and could be growing, said study author Tana McDaniels, a researcher with Environment Canada
That’s encouraging for a species that is declining elsewhere across the Great Lakes region.
Mudpuppies have external gills and can absorb contaminants through their skin, so they’re sensitive to pollution, Harding said. They can be killed by a chemical used to control sea lamprey larvae, a parasitic fish. The chemical, called TFM, has wiped out mudpuppies in some tributaries of Lake Michigan.
And mudpuppy die-offs along Lake Huron and Lake Erie could be tied to toxins that build up from algae blooms.
“I would say certainly they’re on the decline,” Harding said. “I don’t see them in as many bodies of water as I once did and they seem to be scarcer for the most part in those bodies of water where I still find them.”
A stable population of mudpuppies in the Sydenham River is not just good news for salamanders. The river could also be home to the only Canadian population of endangered mudpuppy mussels, McDaniels said.
A mudpuppy swims in Kemptville Creek, Ontario. Photo: mcwetboy, via Flickr
The larvae of most mussels attach to fish gills. The attachment provides plenty of oxygen and helps the larvae travel to places it couldn’t reach on its own. The larvae are harmless and drop off after a few weeks.
Each species of mussel generally attaches to a certain species of fish. But the mudpuppy mussel attaches to the gills of the amphibian it’s named for, and is the only mussel with an amphibian host.
The mussels, under pressure from agricultural runoff and invasive species, are listed as endangered or threatened in Canada, Michigan, Minnesota, Wisconsin and Ohio.
The mudpuppy and its mussel are both sensitive to heavy sediment. The Sydenham empties into Lake St. Clair after flowing through an intensely agricultural region of Ontario, picking up soil that has eroded from farmland. All that dirt in the water can make it difficult for mudpuppies to breath and for mussels to eat.
Though the study suggests the muddy Sydenham’s mudpuppies are doing fine, McDaniels said that this one-time survey doesn’t prove that this population is stable. That could take decades of monitoring, she said.
From one mudpuppy to another, thanks for this story.
Jeff.
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[...] For Great Lakes mudpuppies in decline, new Canadian research is a bright spot Comment: From one mudpuppy to another, thanks for this [...]
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I just found a frozen mudppy washed up on a lake Ontario shore is it useful to anyone? It is in my freezer!
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I like this sight and i want to DEFINITLY hold a Mudpuppy-did you know they are nocturnal??
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We just came back from camping in Selkirk Provincial Park and had to look up what we had found washed up on shore after a violent storm. We found over 30 of these little guys within a 200 metre stretch of the beach. They ranged from approx. 20 to 40 cm in length.
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We’ve got what seems like thousands in our little Lake Ontario bay near Kingston.
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we were just on vacation at the sherkston shores campground resort near fort erie ontario canada and while there, each day thousands of mudpuppy fish were washing up on the shore line all day long, they cleaned the beach very well but it had us worried about what is happening to lake erie for a bottom fish to be dying,,,,,,,,,so i decided to go online and research this and i found an article of 15 dead, and it could lead to a botulism outbreak,,,,,,i do not know where to go or who to report this to,,,,,,,if there is going to be a botulism outbreak i would like to know as my kids and animals were swimming in that beach all week and i need to know what to look out for
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these mud puppies are pretty awesome i catch them alot on my line they just spit your hook up there so slimey and really creepy lokkin but over all there pretty cool :p
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I just caught a big one this weekend on the Ottawa river. Probably close to 1.5 – 2 pounds. Swallowed the hook and had to cut the line.
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We have a cottage on lake ontario and we found about 10 mudpuppies washed up on the beach.
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Thanksgiving weekend. Grandson found a 10-inch dead mudpuppy in the St. Lawrence between Kingston and Gananoque. Wasn’t sure what it was. Now we know.
Thanks.
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The Canadian Cooperative Wildlife Health Centre (http://www.ccwhc.ca)tracks–and when possible investigates–incidents of dead wildlife so if you find dead mudpuppies (or other wildlife) you should get in touch with them. In Ontario the toll free number is 866-673-4781.
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