Ghariyal : 無料・フリー素材/写真
Ghariyal / AntoGros
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | The Gharial (Gavialis Gangeticus) also called Indian gavial or gavial, is the only surviving member of the once well-represented family Gavialidae, a long-established group of crocodilians with long, slender snouts.The gharial is listed as a critically endangered species by IUCN.Gharials are exceeded in size only by the Saltwater Crocodile. Male individuals of up to 6 metres (20 ft) were commonly encountered in the past, but such large individuals are unknown today. Their well-developed laterally flattened tail and webbed rear feet provide tremendous maneuverability in their deepwater habitat. On land, however, an adult gharial can only push itself forward and slide on its belly. Its elongated, narrow snout becomes proportionally shorter and thicker as an animal ages. The bulbous growth on the tip of a male’s snout renders gharials the only visibly sexually dimorphic crocodilian. This growth is present in mature individuals and called ghara after the Indian word meaning “pot”. Males utilize the structure to modify and amplify “hisses” snorted through the underlying nostrils. The resultant sound can be heard for nearly a kilometer on a still day. The ghara is thought to play an important role in gharial reproduction by identifying mature males to females and as an instrument in courtship auditory communication. |
| 撮影日 | 2012-02-13 12:51:16 |
| 撮影者 | AntoGros , Conoor, Nilgiris District, Tamil Nadu State, India, India |
| タグ | |
| 撮影地 | New Delhi, Delhi, India 地図 |