About as thick as a standard dictionary, this turtle’s shell may have warded off attacks by the Titanoboa, thought to have been the world’s biggest snake, and by other, crocodile-like creatures living in its neighborhood 60 million years ago. [...more]
Recently, scientists at the Smithsonian Tropical Research Institute in Panama discovered that the brain region responsible for learning and memory is larger in the social queens than in the solitary queens of this species. Their study is the first comparison of the brain sizes of social and non-social individuals of the same species. [...more]
“Two things appear to be going on here,” explains Jacobus Boomsma, professor at the University of Copenhagen and Research Associate at STRI. “Right after mating there is competition between sperm from different males. Sperm is expendable. Later, sperm becomes very precious to the female who will continue to use it for many years to fertilize her own eggs, producing the millions of workers it takes to maintain her colony.” [...more]
This short video of an ocelot was taken by Smithsonian scientists during a recent camera-trap survey of these animals in the Peruvian Amazon. [...more]
“Our guide celebrates the beauty of some of the most attractive inhabitants of Panama’s undersea realm and provides an indispensable, easy-to-use tool for their identification,” say the Littlers. [...more]
Birds do it. Bees do it. And in a laboratory in northern California, scientists using bumblebees recently figured out the best way to measure it--vertical lift! [...more]
In their laboratory, scientists from the University of Cambridge, the University of Southampton and the Smithsonian Tropical Research Institute in Panama, observed as a number of adult locusts walked along a horizontal ladder. After covering the right or left eye of an insect, the scientists observed a significant increase in the error rate of rungs missed by the front leg on the side of the covered eye. [...more]
“Spinning under the influence” is one way to describe recent activities in the Costa Rican laboratory of Smithsonian scientist William Eberhard. An entomologist at the Smithsonian’s Tropical Research Institute, Eberhard recently carried out a series of experiments in which he observed the web-building behavior of dozens of spiders under the influence of drugs—specifically, a chemical injected into their bodies by parasitic wasps. [...more]
Kiwis come to National Zoo. The Smithsonian’s National Zoo will be using a new kiwi pair donated by the New Zealand Embassy to establish a breeding science center. Both birds came from the Ngati Hine people in New Zealand. Adding these animals to the genetic pool in North America is a rare and valuable opportunity. This pair came with another pair that will continue on to Germany and one bird that went to the San Diego Zoo. Kiwis are native to New Zealand and have been there for more than 60 million years, making them New Zealand’s most ancient bird. (Photo by Mehgan Murphy)
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