Header Ads Widget

Rana Tigrina full details and Anatomy

 

Rana Tigrina

The frog named Rana tigrina is a large frog found in the Indian subcontinent. It is called the Indian bull frog.

Habitat and Nature 

  • Common Indian frog Rana tigrina is generally found in stagnant soft water and slow flowing water systems such as pits, pools, ponds, lakes, springs, rivers etc.
  • During the rainy season, they move far away from their habitat like fields, gardens, road etc.
  • In water, they keep the skin moist and perform cutaneous respiration.
  • At the site they respire with the help of lungs.
  • They live near water because if their skin starts getting dry, they can quickly go into the water and keep it moist because their skin keeps them slippery when moist, so that they can protect themselves from their enemies when needed. can do.

External structure

  1. Its body is flattened and prestige.
  2. Its body is divided into head and trunk. The neck and tail are absent in it.
  3. The upper part of its body is olive green with black spots in the middle.
  4. The skin is dry and rough in its other species like Bufo.
  5. Its head is almost triangular and flattened.
  6. Its upper part is called the snout, on both sides of which there are nasal holes in the side.
  7. In the region on the top of the head, there are two protruding eyes on either side, which are surrounded by a fixed upper eyelid and a movable lower eyelid.
  8. The upper part of the protruding eyelid is transparent, which is called the nictitating membrane.
  9. Which can completely cover the eye.
  10. In the swimming position, the frog remains covered with the help of this and can easily see all around.
  11. Due to the absence of a neck, the head is directly attached to the trunk, which is why the frog's head is immovable.
  12. The legs are attached to the trunk in two pairs.
  13. The forelimb is short and attached to the front part of the body, ie its part towards the head. a
  14. Towards the end of the trunk of the Grapad and is quite large.
  15. In moments of rest, the hindquarters remain confined like the letter 'Z'.
  16. The forelimbs provide support to the frog while sitting and jumping while the hind legs help in swimming because of the web between their fingers.
  17. At the rear end of its body there is an oscar gate, through which the frog excretes the excreta.

Rana Tigrina Sex Process

The frog is monogamous, that is, the male frog and the female frog are separate, the vocal cords are developed in the male frog, due to which it makes turr-turr sounds.
Male frogs make turr-turr sounds to attract female frogs. Due to which the female frog gets attracted to the male frog. Mating pad is present.
In frogs, there is only sexual embrace, not sex, because the male frog lacks a penis. Immediately after mating mating, the female frog lays eggs, which are held together by a gelatinous substance and are kept from floating in the water.
Immediately after the female frog lays its eggs, the male frog releases its semen through its oviduct, which is fertilized by the sperm present in the semen.
The skin of a male frog is darker than that of a female frog.

See  Also