An Indo-American team of biologists has discovered an extraordinary reproductive behaviour in the Charles Darwin’s frog (Minervarya charlesdarwini), an endangered species endemic to the Andaman Islands.
- The research reveals that the Charles Darwin’s frog exhibits an unparalleled reproductive behaviour: upside-down spawning.
- Unlike other frogs, this species deposits its eggs in a vertical, upside-down position on the inner walls of water-filled tree cavities or root buttresses.
- Once laid, the eggs eventually fall into the water below, where they develop into tadpoles. According to researchers, no other frog lays terrestrial eggs in an upside-down position within tree holes.
- The study also delves into the complex vocal behaviour of male Charles Darwin’s frogs, who use intricate calls to attract females.
- Charles Darwin’s frog is classified as ‘Vulnerable’ by the International Union for Conservation of Nature (IUCN).
