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Parasites may take a heavier toll on the health of mammal populations than previously thought, study suggests
Phys.org ^ | 7/27/2022 | University of Alberta, Kyle Shanebeck et al

Posted on 07/27/2022 7:29:53 PM PDT by LibWhacker

From cattle to uncontrolled wildlife, pesky but pervasive large parasites like tapeworms have a far greater impact on the total body health of their mammal hosts than previously known, new University of Alberta research suggests.

"Parasites don't have to kill the animal to control a population," says Kyle Shanebeck, a Ph.D. student in the Faculty of Science's Department of Biological Sciences who led the study.

Shanebeck explained that all wildlife have at least one and often multiple parasites. The less fatal a parasite, the more prevalent it is within a population, with potentially stronger negative effects.

"They can affect the animal's ability to absorb nutrients, which can affect digestive health and behavior, making them more aggressive and even changing where they forage," he said. "These parasites also suppress immune action or weaken it, as the body spends energy to mount an immune response to fight them which can make a secondary infection worse."

For the study, Shanebeck's team organized the different parasite effects on the host according to their impact on an animal's energetic condition. A meta-analysis of parasites in wild, laboratory and domestic mammal hosts produced 142 peer-reviewed studies documenting 599 infection-condition effects. "We found consistently strong negative effects of infection on host energetic conditions across taxonomic groups."

Large parasites—like tapeworms, flatworms and flukes—eat carbohydrates, making them less available to the animal. Shanebeck likens it to a power grid, where energy is redirected when faced with a supply challenge, depleting reserves. "Rolling blackouts" occur as the body starts making decisions between survival and reproduction.

For example, parasitic worms in cattle won't kill the animal but the resulting immune stress and other conditions like diarrhea may affect milk production, exacting a financial toll on farming operations. In less controlled wildlife settings, the overall health effects of parasites are harder to measure, which may be one reason these effects are assumed to be negligible.

Traditionally, assessing population health in wildlife typically focuses on pathogenic diseases—the often fatal illnesses that can spread between species—and potentially from animals to humans.


TOPICS: Business/Economy; Pets/Animals; Science
KEYWORDS: effect; parasites; thought; worse

1 posted on 07/27/2022 7:29:53 PM PDT by LibWhacker
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To: LibWhacker

Very similar, and for similar reasons, parasites that feed on our society may take a heavier toll than thought. A stretch? Hmm, I don’t think so.


2 posted on 07/27/2022 7:32:32 PM PDT by LibWhacker
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To: LibWhacker

Dog whistle for “Democrat”.


3 posted on 07/27/2022 7:33:49 PM PDT by Bernard (“the rights of man come not from the generosity of the state but from the hand of God." JFK 1-20-61)
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To: LibWhacker

Our parasites will read this article and want us to fund a program to worm every bear and bambi in the woods.


4 posted on 07/27/2022 7:36:22 PM PDT by TigersEye (The Democrat Party is criminal, unAmerican and illegitimate )
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To: LibWhacker
I hate parasites...


5 posted on 07/27/2022 7:36:23 PM PDT by Magnum44 (...against all enemies, foreign and domestic... )
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To: Bernard

“Dog whistle for “Democrat”.”

My first thought.


6 posted on 07/27/2022 7:56:37 PM PDT by lizma2
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To: LibWhacker

“Very similar, and for similar reasons, parasites that feed on our society may take a heavier toll than thought. A stretch? Hmm, I don’t think so.”

Good observation. My first thought was that government is quite a parasite.


7 posted on 07/27/2022 8:02:55 PM PDT by plain talk
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To: LibWhacker

Parasites...Ivermectin, Wonder drug!

Now, if we could do something about the Democrats...


8 posted on 07/27/2022 8:37:30 PM PDT by Pete from Shawnee Mission
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To: LibWhacker

Burned toast and a rotten egg; I’ve got a tapeworm and that’s all he deserves.


9 posted on 07/27/2022 9:26:22 PM PDT by Greg123456
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To: LibWhacker

Applies to humans as well.

I had a parasite (fungus) for over 30 years and my health at its apex was spiraling. I’d be dead now if I hadn’t corrected it.

Took 2 years entirely on my own to correct a medical condition without a medical name.

THAT’s ‘modern medicine’. /s


10 posted on 07/27/2022 10:02:30 PM PDT by logi_cal869 (-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
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To: Pete from Shawnee Mission

I’m thinking we just intercept the next booster batches.


11 posted on 07/27/2022 10:04:13 PM PDT by logi_cal869 (-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
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To: LibWhacker; SunkenCiv; Red Badger; BenLurkin; Kaslin; Lazamataz; MHGinTN; Liz; rktman

Thousands of ticks and fleas on the moose population in Maine take some 15% to 25% of their blood. I asked the biologist/moose tour guide why they didn’t just apply tick collars when the moose was tranquilizer and being measured and weighed and getting their satellite tracking collars.

She looked at me like I was a heathen pariah for daring to find a solution, rather than scream and cry about (yet another) man-caused problem in her beautiful perfect wild environment of “no chemical products” and “the balance of nature”!


12 posted on 07/28/2022 7:35:29 AM PDT by Robert A Cook PE (Method, motive, and opportunity: No morals, shear madness and hatred by those who cheat.)
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To: LibWhacker

Deep State makes them all look like pikers.


13 posted on 07/28/2022 7:36:12 AM PDT by mewzilla (We need to repeal RCV wherever it's in use and go back to dumb voting machines.)
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To: Robert A Cook PE

Law of the Jungle...........................


14 posted on 07/28/2022 7:37:18 AM PDT by Red Badger (Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
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To: Robert A Cook PE

Oh, I thought we were talking about dems. 😂✌


15 posted on 07/28/2022 8:05:40 AM PDT by rktman (Destroy America from within? Check! WTH? Enlisted USN 1967 to end up with this? 😕)
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