Tarsiers: Creepy Little Ninjas

Key Concepts and Discoveries:

• Size and Habitat:
  • Tarsiers are small primates, measuring 10 to 15 centimeters in length and weighing up to 150 grams.
  • They are found in the jungles of the Philippines, Thailand, and Malaysia, but their habitat has been significantly reduced due to deforestation.
• Species:
  • There are eight species of Tarsiers, including the recently rediscovered pygmy tarsier, which weighs only 57 grams.
• Anatomy:
  • Tarsiers have elongated tarsal bones (heel bones) and fingers, with the third finger being as long as their upper arm.
  • They possess large eyes, measuring up to 16 millimeters in diameter, which are larger than their brains. Their eyes account for about 10% of their body length.
  • Tarsiers have flexible necks that can rotate 180 degrees to help them look around.
• Vision and Hearing:
  • Tarsiers have excellent night vision, although not as advanced as some other nocturnal mammals. They lack the reflective layer (tapetum lucidum) found in cats.
  • They possess a fovea in their retina that enhances image quality, making them effective ambush hunters.
  • Their large ears can move independently, allowing them to hear high-frequency sounds (up to 90 kilohertz) that are inaudible to humans.
• Diet and Behavior:
  • Tarsiers are the only exclusively carnivorous primates, preying on insects, bats, lizards, and small birds.
  • They are solitary creatures but may form mated pairs that occasionally interact.
• Reproduction:
  • Tarsiers have a long gestation period of six months, resulting in well-developed offspring that can climb and jump shortly after birth.

Methodology:

• Hunting Technique:
  • Tarsiers use their jumping ability to catch prey midair, capable of leaping up to 5 meters and covering distances up to 40 times their body length.

Featured Researchers/Sources:

• Daniel Defoe (narrator)