Jellyfish found by girl in Manitoba lake - Macleans.ca
 

Jellyfish found by girl in Manitoba lake

Asian species could be “red flag” for ecosystem


 

A girl in eastern Manitoba discovered dozens of jellyfish swimming in Star Lake at Whiteshell Provincial Park. The girl and her family scooped one up with a jar and brought it to the University of Winnipeg for further investigation. It turned out to be the Craspedacusta sowerbyi, a freshwater jellyfish from China that has been observed in many U.S. states and parts of eastern Canada, but never before in Manitoba. U of W biologist Eva Pip told CBC News that the species may be a “red flag,” for the environment. “It shows how disrupted the ecosystems are now everywhere, and especially freshwater,” said Pip.

CBC


 
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Jellyfish found by girl in Manitoba lake

  1. We have plenty of those in the lakes of Gatineau Park near Ottawa. Just because no one "observed" it previously doesn't mean it wasn't there. These "jellyfish" appear when the water gets warm enough. We have had an especially warm summer so it may have been propitious for a population expansion that was noticed.

  2. Lots of envading species from China, why?

    • examples?

      • There was a problem here in B.C. last year with unknown ? residents putting Yellow Perch ,and Pickerel from back East into one of the local Interior trout lakes… End result was they wiped out the entire Trout population in the lake.Dept. of Fisheries had to kill off the whole lake to stop the spread of the foreign species, before it spread to other Streams and lakes which would have been disasterious to the ecosystem. The lake has since been restocked with resident fish.

      • You've obviously not heard any of the coverage of the severe threat to our Great Lakes water systems by the Asian Carp, and the valiant efforts by Michigan to prevent its spread into Canada.

        Look it up. The images are truly nightmarish.

        Asian Long-horned beetle. Eurasion milfoil. Asian Carp.

        • Looked up Asian Carp..that is scary to think what could happen if this is not kept under control.The article that I read said ,that it is suspected to have been transplanted by humans, same as the Perch problem here in B.C…..the comment that was made by one of the suspects out here was, that it would be cool to be able to fish Pickerel, and perch here in B.C. rather than have to fly back East to do it. It 's not as if these individuals didn't know better, they just don't care…..

  3. lots more trade + travel with china now

    • I don't recall reading anything about the jellyfish being Chinese.

      • PEM.. It says in the above article…'' Craspeacusta sowerby..a freshwater jelly fish from China.

      • They could tell from their passports! :)

    • How’s that going to do with jelly fish in the lake, Idiot?

  4. can you eat them?? Yummy!

    • they do in china.. kind of tastes like cartilage and oil.. (they were fried)

  5. Hey Jose…I'm Chinese…& you sound like a total moron

    • at least he dosn't eat dogs :o

  6. the enviromentalist that stated that it is a red flag for the enviroment is an idiot and thinks waay to conservatively, in the history of life on Earth many species have migrated to different ecosystems. its only a natural part of life.

    • Lakes are land locked…how would a Chinese jellyfish get from a body of freshwater in China to a lake in Canada ? Just wondering…..

    • Jellyfish have often been an early indicator of significant changes to the ecosystem, sometimes because of damage done by man, sometimes causing the change themselves. Without action, not just the ecosystem of the lake but all other systems connected to that lake are at potential risk. Given that it is located within a provincial park, taking whatever action is needed to preserve the status quo seems warrented.

  7. This particular species can fly.

    • Really?
      Chinese jelly fish can fly?
      – like Frisbees?

      OR heh, you just solved all the flying saucer sightings.

  8. Species migrating across the planet is not a natural phenomenon. A new species can be devastating to an ecosystem. Just look at Cane Frogs in Australia, Asian Beetles in SW Ontario, Pine Beetle in British Columbia. There are many more like examples. A foreign species in an ecosystem should be taken VERY seriously.

    And increased trade and travel to China has everything to do with this. Species migrate aboard ships, planes, trains, whatever. Border screening isn't perfect and cant' catch everything.

    Sounds harsh but I say if they're foreign, destroy them all before they're out of control. The consequences of not destroying them could be far worse!

    • I believe that the Pine Beetle is an indigenous species. Effective control in Northern forests was accomplished by cold snaps during the winter. One might argue that humans are an unnatural globally migrating species that destroys ecosystems, but it is generally considered uncouth to talk is such a manner about your neighbour's children.

      • My mistake, Pine Beetle is indigenous to BC but you get my point. I have to say I disagree that the global migration of humans is unnatural. I say this because we migrated under our own power, unlike many of the foreign specious one reads about in the news that hitched a ride or were transplanted. The fact that humans destroy ecosystems though, is not up for debate.

        • Foreign species that were unnaturally transported under the power of something else to North America that should be wiped out; Cattle, horses, chickens, potatoes, wheat, Horse Chestnut trees, Japanese maples, starlings, barley, parsnips, apples …

          I understand that it is reasonable to attempt to reduce the potential harm that may be caused by foreign species. However, it seems to me to be a shortsighted view of the idea of ecosystem to disallow some species full access to migration because they have no immediate commercial value or because they were not present at the time of a park spaces founding. The 'ideal' number, range and types of species in an ecosystem is, as always, mutable.

          Live and let live I say.

          • There's a difference between a foreign species, and an invasive species.

            They can destroy the ecosystem, eliminate other species, etc. I haven't seen giant uncontrolled apple tree groves choking out other trees and eliminating canopies and exposing forest floors. (For example)

          • Agreed. It's critically important for us to differentiate between foreign species and invasive species.

            For instance, Southern Ontario's ravines and woodlands are being destroyed by two invasive species: Norway Maple and Manitoba Maple (both of which are, illogically and tragically, protected under Toronto's Ravine by-law act…).

            Norway Maple is both foreign and invasive. Manitoba Maple is native to Ontario, but foreign to Southern Ontario. However, it is a Class A invasive (meaning it is the highest threat level). Both of those species quickly crowd out indigenous species and create monocultures. Sadly, both of them are preferred hosts for the Asian Longhorned beetle, another foreign invasive species.

            So the result is that these invasive tree species overtake existing forests and create a monoculture, which is then host to an invasive pest that destroys those trees. Which means, unless we take drastic action to stop it, ultimately no trees, no woodland, no forest, no fauna, etc…

          • "Foreign species that were unnaturally transported under the power of something else to North America"

            One more item to add to that list: worms. Yes, you heard that right. Worms are not indigenous to North America.

    • Good grief! Species migrating across the planet is not a natural phenomenon?
      Hello! http://animaldiversity.ummz.umich.edu/site/accoun

      "The polyps (of the jellyfish) can be distributed passively as well. During winter months, polyps contract and become dormant, as to survive the cold temperatures. These polyps, also known as podocysts, can be transported by aquatic plants, aquatic animals, or birds' feet to new areas of dispersal. As winter ends, and conditions become more favorable, the podocysts transform into polyps …"

      And the article gave tips on how you can keep them as pets.
      Not a serious eco threat at all, been in the states since the turn of the last century.
      Jonks, how do you think species spead across this planet before humans arrived?

      Get off CBC, seriously they'll rot your mind.

  9. I am for getting rid of Parsnips, can't stand them yuk!
    But seriously the article above talks about "disrupted the ecosystems are now everywhere, and especially freshwater,” said Pip"
    I think Pip is a real pip hinting that this is some enviromental "red flag" issue.
    When as one commentor says this "envading species" is more about
    these items being brought here through trade & carelessness.
    I agree with the later.

    • Ah now I have a problem with that guest, I love parsnips!

      But there's a hard orange coloured bitter vegtable that was served all to frequently during my childhood, it's truly awful, and just can't think of the name right now. THAT one should be banned and kicked out of the veggie patch all together!
      Just kidding it's always banned from my plate and that's fine.

      Not eggplant… I like that once in a while., not sweet potatoes – LOVE them …

    • It's – ug – TURNIPS that I strongly dislike.
      /
      I want to ban turnips!
      I never get to ban anything, sniff.
      When is it my turn?!?!?!
      Ban the turnips! Turnips are but a bastard offspring of some old floozie of a veggie head and a scare crow!
      Be gone-turnips be gone from our lands and hands!
      "Eating turnips will make you smell bad"
      and now;
      How do I set up a violent protest?
      /

      • For the record, what we refer to as a turnip here in Canada is sometimes really a rutabega. I dislike both of them served as a vegetable, but love both of them in stews.

        • Ah that's the other name rutabega! Thanks, I remember that now, but I'll still be not even having them in the home let alone our stews, but thanks for the recipe tip.

    • You must try Parsnip wine, It will give you a totally different outlook on parsnips…and a lot of other things too..honest!