England's zoo project injects fluorescent compound into endangered species for tracking.
Scientists at Chester Zoo in Britain have devised a way to track down a rare and endangered amphibian by injecting a fluorescent compound into the creature.
The species chosen is a small frog from the island of Madagascar in the Indian Ocean, the Mantella aurantiaca.
A minimal amount of fluorescent silicone is injected just below the amphibian skin to mark the frog. The compost is injected just below the skin on one leg so that the frog is not seen by predators.
Left photo shows frog 'Mantella aurantiaca'without fluorescent labeling; on the right you can see a small fluorescent spot on the amphibian (Photo: BBC)
After testing the compound at the zoo, the team of scientists goes to Madagascar to mark and track the amphibians in their habitat.