Frogs lay the only tadpoles on the planet

At present, scientists have not been able to explain the process of the only live canine frogs in the world mating.

Djoko Iskandar, an Indonesian researcher, discovered the fangle frog, scientific name Limnonectes larvaepartus, and claimed it was the only frog among 6,455 species that gave birth by laying tadpoles on the planet, Daily Mail reported on January 3.

Tadpole frogs have a gray or brown body.(Photo: Daily Mail)

According to Djoko's research results, the body of Limnonectes larvaepartus is usually gray or brown with a length of about 4cm, weighing about 5 grams. Djoko said frogs often live in small streams and shallow pools in a tropical forest in Sulawesi Island, Indonesia to avoid larger frogs, snakes and birds - animals that can eat them. Unlike females, male frogs have two canines for self-defense or attack. Their mating process is still unknown.

A female frog belongs to Limnonectes larvaepartus species with tadpoles.(Photo: Daily Mail)

Jim McGuire, a reptile animal researcher at the University of California, Berkeley, USA, decided to conduct experiments to test. He chose a frog that he thought was a male. But soon he discovered it was a frog with a dozen tadpoles.

"Reproduction in most frogs is no different than reproduction in humans. In this case, their reproductive regime is similar to ours," PLoS One magazine published its findings. by Dr. McGuire.

Images of newborn tadpoles have a length of 1.5cm

He said: "Almost all frogs in the world, more than 6,000 species, all fertilize outside and release sperm after the eggs are laid. Frogs are one of 10 or 12 species that have evolved. I have internal use with a tadpole spawning regime instead of fertilized eggs. I cannot explain clearly why this reproductive regime does not evolve further. "