Maya Dog Mystery
First Evidence of Live-traded Dogs for Maya Ceremonies
March 21, 2018
At one of the oldest Maya sites, STRI staff archaeologist, Ashley Sharpe, discovered dog bones from the Guatemalan highlands deep within two pyramids.
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Displaying 10 of 56 results.
Learning from other species
Predators learn to identify prey from other predators
March 21, 2018
It is much faster to learn to recognize a new prey item from a neighboring species, than to learn by trial and error.
What stops mass extinctions?
Lessons From Amphibian Die-off in Panama
March 30, 2018
What slows or stops a disease epidemic if the pathogen is still present? It appears that wild frogs are becoming increasingly resistant to the chytrid fungal disease that has decimated amphibian populations around the world.
Behavioral evolution
First report of stone tool use by Cebus Monkeys
July 09, 2018
White-faced capuchin monkeys in Panama’s Coiba National Park habitually use hammer and anvil stones to break hermit crab shells, snail shells, coconuts and other food items, according to visiting scientists at the Smithsonian Tropical Research Institute (STRI). This is the first report of habitual stone-tool use by Cebus monkeys.
Not Resilient
Old Species Learn New Tricks…Very Slowly
August 23, 2018
Perhaps old species, like some older people, gradually lose their ability to deal with changes in their environment. Aaron O’Dea and colleagues show that when the Caribbean was cut off from the Pacific by the rise of the Panama land bridge, evolutionarily old species took longer to expand into new habitats than evolutionarily younger species did.
STRILights
Learning from Tropical Nature in 2018
December 20, 2018
Join us to celebrate a few of the discoveries made in 2018.
Adaptation
Surfer’s Ear Points to Ancient Pearl Divers in Panama
January 18, 2019
A small bump in the ear canal of skulls from burials near the Gulf of Panama, may indicate that ancient coastal residents dove in icy waters to recover pearls and valuable orange Spondylus shells.
Pheromone talk
The queen gets to keep her daughter
May 23, 2019
Why did some bee species become social, while the majority have remained solitary? On Barro Colorado Island, a bee that adopts both strategies interchangeably, may unlock the evolutionary origins of sociality in insects
Hot Protection
Pathogens may have facilitated the evolution of warm-blooded animals
June 11, 2019
Fever may be less effective at repelling infections in cold-blooded creatures
Approach angle
Bats use leaves as mirrors to find their prey in the dark
August 09, 2019
Bats can find motionless insects on leaves in the dark. This was thought to be impossible, because the acoustic camouflage provided by the leaves should confuse their echolocation system. Inga Geipel and colleagues discovered how they overcome this problem.
