Friday, October 7, 2011

Life of Chilean Dolphin

Life of Sea | Chilean Dolphin  (Cephalorhynchus eutropia) | Chilean dolphins or Black dolphins can be found in the cold, shallow, coastal waters of South America from Valparaiso, Chile, South Isla Navarino, Cape Horn and Beagle Channel, Argentina. In the early twentieth century, the Chilean Dolphin was commonly known as the Black DolphinMost of the few individual specimens studied by scientists were either washed people whose skin wasdarkened by exposure to air or live specimens seen at sea, but only at a distance (and so it seemed darker than they were). As more specimens were studied it became clear that the back of the dolphin was in fact a mixture of grays and the underside is white. The scientific community is now universally agreed in the name of the Chilean dolphin under the division along the coast of the country.

 

Scientific classification
Kingdom:     Animalia
Phylum:     Chordata
Class:     Mammalia
Subclass:     Eutheria
Order:     Cetacea
Suborder:     Odontoceti
Genus:     Cephalorhynchus
Species:     C. eutropia
 

It is thought that this is a nice species as they are commonly found in small groups of 2 to 10 dolphins and large groups of 20-50 in the northern part of the range. There are reports of larger groups, including a remarkable 15 miles long pod of Chilean dolphin near the coastline. Chilean dolphins inhabiting shallow waters with strong currents and are known to enter rivers and estuaries. In the southern part of their range,Chilean dolphins tend to be more wary of boats, but in the north have seen them bow riding.


The Chilean dolphin is a small dolphin about 170 cm in length, with a blunt head. The Dolphin is thick-shaped with a size up to two thirds of its length. The dorsal fin and flippers are small in relation to body size compared with other dolphins. The throat, the bottom and the nearest part of the flippers to the body are white. The Dolphin has 28 to 34 pairs of teeth in the upper jaw and 29-33 in the lower.

Chilean dolphins are small cetaceans, with a stocky body shape and bone beak less heads. They are about 1.7 m long on average and up to 60 kg in weight. They have rounded flippers and a large rounded dorsal fin. Chilean dolphins are gray with lighter colors on the belly side. They have white markings on the lips, throat, forehead, and behind every game. A dark gray band covers the throat of the body.

 
Chilean dolphin feed on crustaceans, cephalopods and fish such as sardines and anchovies. They are also known to feed on green algae. Chilean dolphin caught as bait for long line fishing and crab fishing sword. They also caught for human consumption. Between 1.300 to 1.500 harpooned dolphins are reported each year near the western Strait of Magellan. Chilean dolphin hunting is now banned, but remain independent fishermen this species as bait for their remote locations make it difficult to enforce the laws. Chilean dolphins are at risk of bycatch, especially in the northern range of their habitat in which the gill net fishery for fishing are available.

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2 komentar

Starsong Silversea January 25, 2014 at 12:19 PM
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Starsong Silversea January 25, 2014 at 12:20 PM

Might want to check your images. The 2nd photo is an Hourglass dolphin (Lagenorhynchus cruciger) and the 4th is a Peale's dolphin (L. australis).

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