Frog groped under the order Anura, It contains the frogs and toads, legs are extended. Following are the impacts and importance of “Frog”.
Moist mucus enclosed skin, having swollen eyes, and webbed feet and have no tails. They are habitually aquatic, but some lives in land, burros and trees, it is one of the insectivore animal which nourishes on insects like grasshopper, arthropods and worms. Breeding of frogs regularly takes place in fresh water sources. The male anuran is mostly smaller than the female. Some frogs have toxic skin glands; but it does not provide any protection from destroyers like mammals, birds, and snakes. Frog express color change from one species to other. In xenopus Female frogs are about 20 per cent larger than males.
A frog can place thousands of eggs at once, the frog eggs will proceed 3-25 days for hatching, the temperature rises hatching rate increases, if temperature falls then hatching rate decreases. Egg size, colors and shapes will gets vary for diverse species. It does not have a hard shell, a jellylike matter that covers the egg that act like a defensive coating. The tad pole gets growth inside the egg and once it becomes big then it hatches out.
Young frogs are named tadpoles. They look other like little fish. They have a tail and have exterior gills for breathing. Tadpoles eat plants and decomposing animal matter and some will eat eggs of other frogs.
The third phase is the froglet stage. In this phase there is a growth in lungs, forelimbs and hind limbs. The tail get reduced and then disappear. It dips to the top of the water to breathe air. When the tadpole spreads the froglet stage its tail disappears, it will develop in to an adult frog.
The last phase in the frog development is the adult phase. In this period frog can leave the water and live on land. It feeds on insects, worms and arthropods, When it grows to full mass then the females are prepared to lay eggs.
Scientists have learned that proteins secreted from the frogs skin helps in disrupting the growth of blood vessels in the case of tumor and other diseases. The peptide protein found in skin of the Waxy Monkey Frog be able to help to arrest the progress of the tumour cells. These peptides are also used to treat the conditions where blood vessels essential to repair quickly, such as organ transplants, diabetic, ulcer, etc…
Benefits of using frog in the laboratory
Frogs are easily bred and preserved in the laboratory. Some of them are small in size so do not take up too much space in the laboratory. Frog can yield up to 100 to 1000 eggs at a time. Ovulation can be encouraged with the help of simple hormone injection. They are similar to humans and therefore a noble model for us.
Frog has diverse variability in their color, habit and even structure. Its look creates a bad opinion in our mind. But now we approached to know the medical and laboratory uses of frog.