OneCeylon
All questions

Sri Lankan Sloth Bear (Melursus ursinus inornatus) termite foraging: lip suction aerodynamics?

Seen by 1,220 travellers
Jump to the accepted answer
D
Dan Melursus•935 rep

What specialized skull morphology, missing upper incisors, and claw sickle curvature allow sloth bears to vacuum subterranean termite colonies in Wilpattu?

21

3 Answers from travellers

✓Accepted Answer

The Sri Lankan Sloth Bear (Melursus ursinus inornatus / Walaha) possesses extreme morphological specializations for myrmecophagy (eating ants and termites). Using massive, 8cm ivory-white curved claws, bears excavate rock-hard subterranean termite mounds (Odontotermes) in minutes. The bear inserts its long muzzle into the breach. It lacks middle upper incisors, creating a natural gap in the front dental arcade. It can close its nostrils voluntarily and protrude its flexible, rubbery lips into a funnel. By inhaling forcefully, the bear creates a powerful biological vacuum pump; the loud roaring suction noise can be heard over 200 meters away as it hoovers thousands of termites into its mouth.

37
D
Dr Bandara Wildlife•1880 rep

Bears blow forcefully into excavated tunnels first to clear loose dirt and sand before inhaling insects, preventing soil from entering nasal cavities.

20
D
Dan Melursus•935 rep

Sloth bears are largely nocturnal in Wilpattu, foraging along sandy jungle roads between 8:00 PM and 5:30 AM before retreating into hollow tree dens.

16
R
Ranger Sisira Yala•1790 rep

You must be logged in to post an answer.

Log In to Answer

Related questions

Browse all questions