Can a microorganism change the behavior of an animal?

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Discussion Overview

The discussion centers around the question of whether microorganisms can influence the behavior of animals, including humans. It explores various examples from nature, including parasitic relationships and the effects of gut bacteria, as well as implications for human behavior.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants assert that microorganisms, such as parasitic fungi, can manipulate animal behavior to further their life cycles, citing examples like Ophiocordyceps unilateralis affecting ants.
  • Others mention that certain human diseases, such as neurosyphilis, can lead to cognitive and behavioral changes.
  • One participant highlights Toxoplasma gondii, a parasite known for its influence on the behavior of its hosts, particularly in relation to cats and their prey.
  • Another example discussed involves a parasite that alters pillbug behavior, making them more vulnerable to predators.
  • Some participants reference studies suggesting that gut bacteria can affect brain function and behavior in humans.
  • There are mentions of how significant infections like Salmonella or HIV can lead to behavioral changes in humans.
  • Participants also discuss the concept of induced defenses in plants and their potential effects on herbivory, although this is less directly related to animal behavior.
  • One participant humorously notes the obvious behavioral changes caused by pathogens that induce coughing or sneezing.

Areas of Agreement / Disagreement

Participants generally agree that microorganisms can influence behavior, but there are multiple competing views and examples presented. The discussion remains open-ended with various perspectives on the mechanisms and implications of these influences.

Contextual Notes

Some claims rely on specific examples and studies, but the discussion does not resolve the broader implications or mechanisms behind these influences. There are also references to fictional explorations of these themes, which may not reflect empirical evidence.

ORF
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Hello.

Can a microorganism change behavior of an animal? ( including humans).

Thank you for your time.

Regards,
ORF
 
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A significant case of Salmonella, gonococcus, HIV, or Staph will certainly change a human's behavior!
 
  • #12
A rather obvious example is any bug which makes people cough or sneeze
 
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  • #14
"Acquired Lavish Altruism Syndrome"
What a way to go!
I think it's still not legal in most countries though,
 
Last edited:

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