Is Bioluminescence a Universal Trait in Living Organisms?

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Bioluminescence in fireflies serves primarily as a mating signal, allowing males to attract females while minimizing predation risks, as many nocturnal predators do not rely on sight. The mechanism involves luciferin and luciferase, producing cold light without ultraviolet rays, which is efficient for communication and attracting mates. Fireflies also use their glow as a warning to predators due to their unpalatable taste, creating a dual purpose for their bioluminescence. The discussion highlights the balance between natural and sexual selection, where brighter flashes may enhance mating success but also increase vulnerability to predation. Overall, bioluminescence is a fascinating trait that varies across species, with fireflies exemplifying its complex evolutionary advantages.
  • #31
Why do I feel cheated? I always thought that they simply did not live here. Now I learn that they are here, just choose not to be flashy. :cry:
 
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  • #32
Danger said:
Well, it's the same chemical reaction involved in both cases (with, perhaps, minor differences). The reasons for bioluminescence vary from one species to another, but the mechanism is the same...
Hmmm squids, fireflys and angler fish all generate light using the same chemical reaction? I wonder if these lifeforms stumbled upon this ability independently or are they evolutionarily related? It would be curious if they share the same gene sequence that codes for this mechanism.
 
  • #33
Ouabache said:
Hmmm squids, fireflys and angler fish all generate light using the same chemical reaction? I wonder if these lifeforms stumbled upon this ability independently or are they evolutionarily related? It would be curious if they share the same gene sequence that codes for this mechanism.

As far as I remember, the bioluminescence for some squid is due to symbiotic bacteria of the vibrio and photobacterium species living in specialized tissues rather. The bioluminescence is not produce by the squid itself.

Also, I think the substrate (luciferin) for each group is fairly unrelated but bioluminescence is very common for deep sea fish and in other sea animal and dinoflagella are also capable of biobioluminescence. There might be common evolutionnary start point fairly early on for at least eukaryotes and bacteria might have evolve independently or "stolen" genes from the fish/squid.
 
  • #34
iansmith said:
As far as I remember, the bioluminescence for some squid is due to symbiotic bacteria of the vibrio and photobacterium species living in specialized tissues rather. The bioluminescence is not produce by the squid itself.

Also, I think the substrate (luciferin) for each group is fairly unrelated but bioluminescence is very common for deep sea fish and in other sea animal and dinoflagella are also capable of biobioluminescence. There might be common evolutionnary start point fairly early on for at least eukaryotes and bacteria might have evolve independently or "stolen" genes from the fish/squid.

Is it possible that every living organism carries or carried the ability to produce biobioluminescence yet the ability is only actualized in cases where it has served as a survival trait?
 

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