- Los machos de papamoscas cerrojillo se adaptan a las necesidades de las hembras.
El canal de comunicación entre machos y hembras podría ser una adaptación para garantizar el éxito de la incubación. Investigadores
del Museo Nacional de Ciencias Naturales (MNCN), del CSIC, han
demostrado experimentalmente que, durante el periodo de incubación, los
machos de Papamoscas cerrojillo, Ficedula hypoleuca, aumentan el aporte
de alimento a las hembras cuando éstas así lo solicitan.
- El Real Jardín Botánico, CSIC participa en la exposición "El último viaje de la fragata Mercedes".
Ha
cedido al Museo Arqueológico Nacional varias piezas procedentes de la
Expedición Botánica al Virreinato del Perú (1777-1788) que se encuentran
en el Herbario del RJB, CSIC. La muestra, que se ha distribuido también en el Museo Naval, se puede visitar hasta el próximo 30 de noviembre.
- Los centros distinguidos con el Severo Ochoa reciben su galardón.
Los
directores de tres centros del Consejo Superior de Investigaciones
Científicas (CSIC) han recibido este martes el galardón de excelencia
científica Severo Ochoa que promueve el Ministerio de Economía y
Competitividad a través de la Secretaría de Estado de Investigación,
Desarrollo e Innovación. La mención pretende promover la investigación
de excelencia que se realiza en España en los campos de la ciencia y les
asigna un millón de euros anuales durante cuatro años.
Más información:
- Do friends have similar genomes?
A study from a controversial pair of US researchers claims that we are
more genetically similar to our friends than we are to strangers.
- Flying dino had long, feathery tail.
Please welcome the latest member of the growing club of flying dinosaurs, Changyuraptor yangi,
pictured here in an artist’s reconstruction. This latest specimen,
found in 125-million-year-old sediments in northeastern China, was about
1.2 meters long and is related to a noted group of flying dinosaurs
called Microraptor, which has provided important insights into the evolution of powered flight. Like Microraptor,
the new specimen had feathers on all four limbs; but its feathery tail,
which takes up about 30% of its total length, is the longest known
among flying dinosaurs. Changyuraptor, described online today in Nature Communications,
weighed 4 kilograms, making it among the heaviest flying dinosaurs
known. As for its long tail, the dino probably used it to slow itself
down when descending, thus avoiding crash landings.
More information:
- Scientists call for limit on creating dangerous pathogens.
A group of prominent scientists and others are calling for a limit to
experiments that modify influenza and other dangerous viruses to make
them spread more easily in mammals.
- Updated: U.S. biosafety panel to come out of hibernation with new members.
On the heels of several mishaps involving deadly pathogens, U.S.
officials are reconvening an expert advisory panel that hasn’t met in
nearly 2 years. But the government has also dismissed 11 of the original
members of the 23-person panel, called the National Science Advisory
Board for Biosecurity (NSABB).
- Darwin's ship library goes online.
As Charles Darwin cruised the world on the HMS Beagle, he had
access to an unusually well-stocked 400-volume library. That collection,
which contained the observations of numerous other naturalists and
explorers, has now been recreated online.
More information:
- Why the Amazon flows backward.
Millions of years ago, rivers flowing westward across what is now
northern Brazil reversed their course to flow toward the Atlantic, and
the mighty Amazon was born. A previous study suggested that the
about-face was triggered by gradual changes in the flow of hot, viscous
rock deep beneath the South American continent. But new computer models
hint that the U-turn resulted from more familiar geological processes
taking place at Earth’s surface—in particular, the persistent erosion,
movement, and deposition of sediment wearing away from the growing Andes.
- Backpacking on Mars.
At the height of the summer travel season, the U.S. Geological Survey
(USGS) has released its most detailed geological map of Mars.
- Nature Research Briefings: Graphene. It’s free to download.
Nature Research Briefings: Graphene is a
collection of recently published Research Highlights, News and Views
selected from across the Nature Publishing Group journals. Each edition
highlights some of the latest and most exciting developments in this key
area of interest.
- NEW! Mucosal Immunology presents a Focus on mononuclear phagocyte diversity in mucosal tissues.
The articles and reviews in this web focus are
likely to be of central importance not only to our understanding of how
mucosal immune responses are initiated and regulated, but also to the
development of novel therapies and mucosal vaccines.
- Astronomers will get a rare close-up look at a
pristine comet in October, when Comet Siding Spring squeaks past Mars
and a flotilla of spacecraft orbiting the red planet. NASA scientists
are finalizing their plans to observe the event.
More information:
- Advances in thin display technology that may pave the way for a new class of smart devices are detailed in Nature.
No hay comentarios:
Publicar un comentario