Wednesday

Irrawaddy Dolphin (Orcaella brevirostris)


Irrawaddy Dolphin Biology:
  • Name - Irrawaddy Dolphin (Orcaella brevirostris) see image.
  • Euryhaline species of oceanic dolphin.
  • Found in discontinuous sub-populations near sea coasts, in estuaries & rivers in Bay of Bengal & SE Asia region (ie including Mekong River).
  • It is one of two species in the genus Orcaella, the other is the Australian Snubfin Dolphin.
  • Belongs to the Delphinidae family.
  • Genetically related to the Orca.
  • Thought to reach sexual maturity at 7 to 9 yrs.
  • Lifespan is ~ 30 years.
  • Communicate with clicks, creaks & buzzes - also used for echolocation.
  • Swims, making only occasional low leaps, and does not bow-ride.
  • Swimming speed - is a slow swimmer, but speeds of up to 20–25 km/hour have been reported when these dolphins are chased in a boat.
Irrawaddy Dolphin History:
  • First described by Sir Richard Owen in 1866.
  • First specimen found in 1852 from harbour of Visakhapatnam, India.
  • IUCN Red List Status - Vulnerable.
Irrawaddy Dolphin Description:
  • Similar to beluga in appearance.
  • Colour - grey to dark slate blue, paler underneath.
  • Colour patterns - None distinctive.
  • Forehead - High & rounded.
  • Beak - not present.
  • Dorsal fin - Small & rounded behind middle of back.
Irrawaddy Dolphin Common Names:
  • Burmese - Labai
  • Chilika dialect - Baslnyya Magar / Bhuasuni Magar
  • English - Irrawaddy dolphin
  • Filipino - Lampasut
  • French - Orcelle
  • German - Irrawadi Delphin
  • Indonesia - Pesut
  • Khmer - Ph’sout
  • Lao - Pha’ka
  • Malay - Lumbalumba
  • Oriya - Khem & Khera
  • Spanish - Delfín del Irrawaddy
  • Thai - pía loma hooa baht

Irrawaddy Dolphin Swimming in Mekong River:



Image Credits Encyclopedia of Life (cc)

Posted by ALCHEssMIST.
Alchemipedia | Home | Index | AZ | Numbers | Years | Animals | Architecture | Art | Business | Fashion | Films | Food & Drink | Games | Health | History | Literature | Media | Music | People |Politics | Science | Sport | Technology | World |

No comments:

 
Web Statistics