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Bio Project
3
AMAZON RIVER DOLPHIN
(Boto)
http://wwf.panda.org/what_we_do/endangered_species/cetaceans/about/river_dolphins/pink_river_dolphin/
Inia Geoffrensis
Sources
Physical Appearance
http://wwf.panda.org/what_we_do/endangered_species/cetaceans/about/river_dolphins/pink_river_dolphin/
http://animaldiversity.ummz.umich.edu/accounts/Inia_geoffrensis/#conservation_status
- Has a pale pink colored skin
- Has a very long snout and rounded head
- Has a long, short dorsal fin
- Can move their heads in all directions
- Average 2-3 meters long
- Can weigh 150 kilograms or more
- Lives either solitary, or in groups of 2-3
- Males are larger then females
Endangered Statistics
General Information
- Classified as Vulnerable
- Faces threats from fishing (nets and decreased food), hydroelectric dams (habitat fragmentation), deforestation (fewer flood plains), and agricultural runoff (rivers are polluted)
- Captive breeding is problematic due to aggression and decreased lifespan (3 years)
- Males fight for female mates
- No lifelong mate
- Mothers take care of calves for 2-3 years
- Endothermic (warm blooded)
- Migratory based on the rain seasons
- Playful and curious like other dolphins
- Use echolocation to communicate
- Can live up to 30 years in the wild
http://www.youtube.com/watch?feature=player_embedded&v=LZ7iwCF8C2Q
Habitat
Food Chain Interactions
- Diet consists mainly of 43 species of fish
- Also eat turtles and crab
- Consume about 2.5% of their body weight each day
- No records of natural predators, however they can be host to parasitic organisms
- Form hunting groups with giant otters and grey dolphins (mutualism)
- One of three species of freshwater dolphins
- Lives in rivers and lakes
- Found in the Amazon River basin and its tributaries in South America
- Females and calves live in floodplains longer then males for a calmer environment then the river
photo credit Nasa / Goddard Space Flight Center / Reto Stöckli