Small enough to stand on the head of a match. A juvenile of Brookesia micra, one of the smallest reptiles in the world. Photo by Jörn Köhler
Like an alien: A portrait of an adult specimen of one of the newly discovered mini chamaleons, Brookesia desperata. Photo by Frank Glaw
All of the newly discovered chameleons appear to be restricted to very small distribution ranges, sometimes limited to a few square kilometers. "For this reason they might be especially sensitive to habitat destruction" says Jörn Köhler of the Hessisches Landesmuseum Darmstadt. "One of the new species, Brookesia desperata, is known only from a small rainforest remnant, and although this area is officially protected, it has suffered severe habitat degradation". The future survival of Brookesia tristis is uncertain as well. In the time since its habitat was designated a nature reserve, illegal logging has increased significantly - probably at least partially due to the current political crisis in Madagascar. The species names of these two chameleons (desperata = desperate, tristis = sad) were consciously chosen to call attention to their uncertain futures.
"The tiny new chameleons show remarkable genetic divergences between species, although superficially they closely resemble each other. This indicates that they separated from each other millions of years ago - even earlier than many other chameleon species,” says Miguel Vences from the Technical University of Braunschweig. "The genus Brookesia is the most basal group within chameleons", adds Ted Townsend of San Diego State University, who carried out the genetic studies. "This suggests that chameleons might have evolved in Madagascar from small and inconspicuous ancestors, quite unlike the larger and more colourful chameleons most familiar to us today.”
Yvonne Mielatz | idw
Newly designed molecule binds nitrogen
23.02.2018 | Julius-Maximilians-Universität Würzburg
Atomic Design by Water
23.02.2018 | Max-Planck-Institut für Eisenforschung GmbH
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Trade Fair News
23.02.2018 | Life Sciences