Is Bioluminescence a Universal Trait in Living Organisms?

  • Thread starter Thread starter EnumaElish
  • Start date Start date
Click For Summary

Discussion Overview

The discussion centers around the phenomenon of bioluminescence in fireflies, exploring its evolutionary advantages and disadvantages, its role in mating, and comparisons with other bioluminescent organisms. Participants share personal experiences and observations, as well as various hypotheses regarding the ecological implications of bioluminescence.

Discussion Character

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

Main Points Raised

  • Some participants suggest that fireflies' glow primarily serves as a mating lure, with the assumption that diurnal predators are less active at night.
  • Others argue that the glow may also function as a warning to predators due to the presence of toxic chemicals in fireflies, which could deter potential threats after a negative experience.
  • A participant notes the evolutionary trade-off between natural selection and sexual selection, proposing that while bright flashes attract mates, they may also increase predation risk.
  • Some contributions highlight the similarities in bioluminescence mechanisms across different species, such as squids and anglerfish, while noting that the reasons for bioluminescence can vary significantly.
  • Personal anecdotes about fireflies and their presence in different regions are shared, indicating variability in experiences and observations.

Areas of Agreement / Disagreement

Participants express a mix of agreement and disagreement regarding the functions and implications of bioluminescence. While some points about mating and predator avoidance are acknowledged, the discussion remains unresolved on the extent to which these factors influence firefly survival and reproduction.

Contextual Notes

There are limitations in the discussion regarding the definitions of terms like "natural selection" and "sexual selection," as well as the specific ecological contexts in which fireflies operate. Some claims are based on anecdotal evidence rather than empirical data.

Who May Find This Useful

This discussion may be of interest to those studying evolutionary biology, ecology, or anyone curious about the behaviors and adaptations of bioluminescent organisms.

  • #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:
 
Biology news on Phys.org
  • #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?
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 75 ·
3
Replies
75
Views
11K
  • · Replies 16 ·
Replies
16
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 2 ·
Replies
2
Views
7K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
14
Views
7K
  • · Replies 69 ·
3
Replies
69
Views
7K