Frog Metamorphosis Stage Process / Toads

Metamorphosis is a process of change experienced by Anura (and also on the type urodela amphibians and Caecilia). Metamorphosis from egg begins and ends in adulthood. As they left the egg shape, amphibians have intentions larvae (tadpoles). Currently there is a change of anatomy, diet, and lifestyle, slowly from the initial stage, which is fully in the water to the animals that have adapted to life on land. European common frog develops from egg to adult in about 16 weeks.

Silus live frog

    Phase eggs
Frog egg covered with jelly-like capsule that expands when it hits the water. This development makes the volume is enlarged and the fetus protected. These eggs are stacked in a pile so that survival is more awake and more able to withstand the heat well. Consequently tadpoles can hatch in a short time. Many frogs and toads using a dry lake or river in the period, as it prevents the animals come to eat their eggs and tadpoles.

    Tadpole stage (3 days)
The tadpole has a big head and upright. There gills and mouth open to eat. Gills out came three days after the tadpoles out of the egg
Tadpole age of 10 days
    Advanced tadpole stage (4 weeks)
Gills outer skin is closed and replaced by the gills. They eat algae. Hind legs appeared.

    The second change (6 weeks)
Tadpole is starting to look like a tiny frog with a long tail. They swim in the river in groups. The tail was then shortened and begin shaped like a boomerang.

    Changes in the second follow-up (9 weeks)
A kind of networking and sharing form the heart atrium. Consequently heart now has three rooms, which helps the flow of blood between the heart and lungs.

    Further modification third (16 weeks)
Tadpoles have strong hind legs. Her eyes have also been prominent. Its tail is very short.

    Rana esculenta, the edible frog
    Last Change
Adult frogs gather on the banks of the river before leaving the water for the first time. They do it in groups.

    Mother and father toad
Although survival instincts are not well developed Anura, frogs and toads are also caring for their children. They lay eggs in large numbers to make sure there is a lot of tadpoles can escape from predators that eat the eggs. Gelatin coating also protects the eggs from other predators. Some types of frogs and even nurture their children by making their own backs as a nest. Examples of such frog is a frog Suriname.