Thursday, January 8, 2009

Frog with tiny tail
Frogs normally lay many eggs because there are many hazards between fertilization and full grown adult frogs. Those eggs that die tend to turn white or opaque. The lucky ones that actually manage to hatch still start out on a journey of many perils. The eggs are kept safe in jelly like substance which gives entire protection to baby inside. Normally within 6 to 21 days depending on the species, the egg will hatch.
Shortly after hatching, the tadpole still feeds on the remaining yolk, which is actually in its gut. The tadpole at this point consists of poorly developed gills, a mouth, and a tail. It's really fragile at this point. They usually will stick themselves to floating weeds or grasses in the water using little sticky organs between its' mouth and belly area. Then, 7 to 10 days after the tadpole has hatched, it will begin to swim around and feed on algae and other decaying material in the water. After about 4 weeks, the gills start getting grown over by skin, until they eventually disappear. The tadpoles get teeny tiny teeth which help them chew their solid food. They have long coiled guts that help them digest as much nutrients from their food.
After about 6 to 9 weeks, little tiny legs start to sprout. The head becomes more distinct and the body elongates. By now the diet may grow to include larger items like dead insects and even plants. The arms will begin to bulge where they will eventually pop out, elbow first. After about 9 weeks, the tadpole looks more like a teeny frog with a really long tail. It is now well on it's way to being almost full grown. By 12 weeks, the tadpole has only a teeny tail stub and looks like a miniature version of the adult frog. Soon, it will leave the water, only to return again to lay more eggs and start their new generation all over again.
Yuwaraj Gurjar.

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