Bats Can Glow Green: Mystery of Bioluminescence Explained
Glowing Bats: A Deep Dive
here’s a breakdown of the recent discovery of glowing bats, covering the key aspects as requested.
What: Several species of North american bats exhibit photoluminescence - they glow green under ultraviolet (UV) light. This isn’t a new coloration to the bats, but a property revealed by UV light. The glow consistently appears on the wings,hind legs,and the membrane between the legs.
where: The study was conducted by researchers at the University of Georgia,United States. Specimens examined were collected from North America. The specific species studied include:
* Big brown bat (Eptesicus fuscus)
* Eastern red bat (Lasiurus borealis)
* Seminole bat (Lasiurus seminolus)
* Southeastern myotis (Myotis austroriparius)
* Gray bat (Myotis grisescens)
* Brazilian free-tailed bat (Tadarida brasiliensis)
When: The study is recent (as of the article’s publication date - unspecified, but likely late 2023/early 2024). The phenomenon itself has likely existed for a long time, but was only recently discovered using UV light technology.
Why it matters: This discovery is significant for several reasons:
* Novelty: It reveals a previously unknown characteristic of these bat species.
* Evolutionary Insight: The fact that all studied species exhibit the glow suggests it was inherited from a common ancestor. This points to a function that may have been important in the past.
* Unanswered Questions: The purpose of the glow is currently unknown. The uniformity of the glow (same color, no variation with age or sex) suggests it’s not used for communication.
* Potential Functional Role: The glow is located on body parts visible during flight, hinting at a possible, yet currently unknown, function related to foraging or predator avoidance.
This is a captivating find. Photoluminescence in mammals is rare. The fact that it’s so widespread across these species suggests a strong selective pressure at some point in their evolutionary history. The current lack of apparent function is intriguing – it coudl be a vestigial trait, or the function may be subtle and require more complex study to uncover. Investigating whether the glow impacts insect prey, or plays a role in avoiding predation, would be a logical next step.
Data Table: Bat Species Studied
| Common name | Scientific Name | Photoluminescence Observed? |
|---|---|---|
| Big brown bat | Eptesicus fuscus | Yes |
| Eastern red bat | Lasiurus borealis | Yes |
| Seminole bat | Lasiurus seminolus | Yes |
| Southeastern myotis | Myotis austroriparius | Yes |
| Gray bat | Myotis grisescens | Yes |
| Brazilian free-tailed bat | Tadarida brasiliensis | Yes |
What’s Next:
* Investigate the function of the glow: Researchers need to determine if the green light is visible to bats in their natural environment and, if so, what purpose it serves. Potential areas of examination include:
* Prey attraction/confusion: Does the glow affect the behavior of insects?
* Predator avoidance: Does the glow deter predators?
* Camouflage: does the glow disrupt the bat’s silhouette against the night sky?
* Expand the study: Examine a wider range of bat species to determine the prevalence of photoluminescence.
* Identify the source of the glow: Determine the specific molecules responsible for the photoluminescence.
* Explore the evolutionary history: Further investigate the ancestral origins of this trait and the environmental pressures that may have led to its growth.
* Light Pollution Impact: Investigate if artificial light sources impact the glow or its potential function.
Related Reads (from the article):
* Unique Bat Myotis himalaicus: Bald Eyes and Super Long Tail
* Why are bats immune to cancer?