Scientists at the U.S. Geological Surveys (USGS) National Wildlife Health Center are concerned that avian cholera, which recently killed about 30,000 eared grebes--small, diving water birds--at Great Salt Lake, Utah, could spread as birds migrate south for the winter, the agency announced today. Last week, USGS scientists isolated Pasteurella multocida, the bacterium that causes avian cholera, from dead grebes that were sent to the USGS National Wildlife Health Center in Madison, Wis. USGS scientists are working with Utah biologists to monitor the situation.
"We havent observed significant avian cholera outbreaks in North America since 1998, so we arent certain if this mortality represents an isolated event or a renewal of regular outbreaks," says Mike Samuel, a USGS scientist and avian cholera expert. "Because recent research shows that birds are the primary reservoir for maintaining and spreading this disease, we need to consider the possibility that grebes and other birds will spread avian cholera beyond the Great Salt Lake during their migration to wintering areas." Each fall about 1.5 million eared grebes congregate at the Great Salt Lake as they migrate south.
Avian cholera is the most common infectious disease among wild North American waterfowl. Once birds are infected with P. multocida, they die quickly, sometimes within 6 to 12 hours after infection. Bacteria spread by dead and dying birds can subsequently infect healthy birds. As a result, avian cholera can sweep quickly through a wetland and kill thousands of birds in a single outbreak.
Rex Sohn | EurekAlert!
Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
International network connects experimental research in European waters
21.03.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
30.03.2017 | Health and Medicine
30.03.2017 | Health and Medicine
30.03.2017 | Medical Engineering