Glow-In-The-Dark Bats: Facts & Myths in America
Bats Glow Under UV Light, Study Confirms – A Legacy From Their Ancestors
Athens, Georgia – Forget Halloween decorations, bats actually glow in the dark.A new study from the University of Georgia has confirmed that multiple North American bat species exhibit biofluorescence, emitting a visible green glow when exposed to ultraviolet (UV) light. The research, published recently, sheds light on a previously unknown characteristic of these nocturnal mammals and suggests a shared evolutionary origin for this ability.
The research team, led by wildlife biologist Steven Castleberry, examined 60 bat specimens representing six diffrent species:
* big Brown Bat (Eptesicus fucus)
* eastern Red Bat (Lasiurus borealis)
* Seminole Bat (Lasiurus seminolus)
* southeastern Myotis Bat (Myotis austroriparius)
* Brazilian Free-tailed Bat (Tadarida brasiliensis)
* Gray Bat (Myotis grisescens)
All species tested exhibited biofluorescence, with the glow consistently appearing on the wings, hind legs, and webbing between the legs. The emitted light is a uniform green color, regardless of the bat’s age or sex – a surprising finding given the diverse ways other animals utilize bioluminescence for communication or mate attraction.
| Bat Species | Scientific Name | Biofluorescence Observed? |
|---|---|---|
| Big Brown Bat | Eptesicus fucus | Yes |
| Eastern Red Bat | Lasiurus borealis | Yes |
| Seminole Bat | Lasiurus seminolus | Yes |
| Southeastern Myotis Bat | Myotis austroriparius | Yes |
| Brazilian Free-tailed Bat | Tadarida brasiliensis | Yes |
| Gray Bat | Myotis grisescens | Yes |
The phenomenon, known as photoluminescence, occurs when a substance absorbs energy (in this case, UV light) and re-emits it as light. researchers believe the bats’ ability to glow is not a recent growth, but rather an evolutionary trait inherited from a common ancestor. This suggests the trait wasn’t developed independently by each species.
– lisapark
This research is a interesting example of how much we still have to learn about the natural world, even regarding relatively well-studied creatures like bats. The widespread nature of this biofluorescence across multiple species points to a deep evolutionary history. The mystery surrounding its current function is notably intriguing.While the glow may no longer serve a purpose, understanding why it evolved coudl provide valuable insights into the ecological pressures faced by bats’ ancestors. further inquiry into whether bats can perceive this UV light themselves is crucial; if they can, it opens up a whole new realm of potential communication and sensory perception.
Castleberry suggests the glow may have once served a specific function, but that function may now be lost.The uniform color, unlike the varied bioluminescent displays seen in other animals, further supports this idea.The research team is now focused on determining if bats can actually see the glow, which would indicate a potential role in communication or navigation.
Sources:
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