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Animal Database
Indo-Pacific Bottlenose Dolphin
Indo pacific bottlenose dolphin
Information
Range South America
Scientific Classification
Kingdom Animalia
Phylum Chordata
Class Mammalia
Order Artiodactyla
Family Delphinidae
Genus Tursiops
Species Tursiops aduncus
Conservation Status
DDSpecies
Data Deficient

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Appearance[]

Indo-Pacific bottlenose dolphins are very similar to common bottlenose dolphins in appearance. Common bottlenose dolphins have a reasonably strong body, moderate-length beak, and tall, curved dorsal fins; whereas Indo-Pacific bottlenose dolphins have a more slender body build and their beak is longer and more slender. The Indo-Pacific population also tends to have a somewhat lighter blue colour and the cape is generally more distinct, with a light spinal blaze extending to below the dorsal fin. However, although not always present, the most obvious distinction can be made with the presence of black spots or flecks on the bellies of adults of Indo-Pacific bottlenose dolphins, which are very rare in common bottlenose dolphins. Their teeth can number between 23 and 29 in each upper and lower jaw, and are more slender than those of common bottlenose dolphins. Size of Indo-Pacific bottlenose dolphins can vary based on geographic location; however, its average length is 2.6 m (8.5 ft) long, and it weighs up to 230 kg (510 lb). The length at birth is between 0.84 and 1.5 m (2.8 and 4.9 ft).

Behavior[]

Indo-Pacific bottlenose dolphins live in groups that can number in the hundreds, but groups of five to 15 dolphins are most common. In some parts of their range, they associate with the common bottlenose dolphin and other dolphin species, such as the humpback dolphin. The peak mating and calving seasons are in the spring and summer, although mating and calving occur throughout the year in some regions. Gestation period is about 12 months. Calves are between 0.84 and 1.5 m (2.8 and 4.9 ft) long, and weigh between 9 and 21 kg (20 and 46 lb). The calves are weaned between 1.5 and 2.0 years, but can remain with their mothers for up to 5 years. The interbirth interval for females is typically 4 to 6 years.

Indo-Pacific bottlenose dolphins located in Shark Bay, Australia, are thought to have a symbiotic relationship with sponges by doing what is called "sponging". A dolphin breaks a marine sponge off the sea floor and wears it over its rostrum, apparently to probe substrates for fish, possibly as a tool, or simply for play.

Diet[]

Indo-Pacific bottlenose dolphins feed on a wide variety of fish and cephalopods (particularly squid).

Lifespan[]

The average lifespan of the Indo-Pacific Bottlenose dolphin in the wild is more than 40 years, while the average age of adult males and females in the wild is 19 years and 26 years, respectively.

Gallery[]

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