The reign of beetles - December 21, 2007 - Science and Future
On a VIDEO. A joystick capable of detecting emotions allergy is hereditary? The Chamber of Agriculture of the Somme adopts drone Parrot allergic we born? AUSTRALIA. 50 sharks killed for a controversial program to protect postmus bathers
A + A - With nearly 350,000 known species, beetles represent more than 25% of the life forms on the planet. The reason behind this amazing diversity are the subject of much research.
Better avoid studying too long otherwise the classification of beetles migraine risk of dawn saw the organized clutter What reign no less than 4 suborders, 17 superfamilies and 168 families! And the distinctions between many of these groups are not entirely clear. To restore some order to this mess, a team from Imperial College London and the Natural History Museum compared the genetic heritage of nearly postmus 2000 species covering 80% of families of beetles. The scientists were able to reconstruct a new evolutionary tree gathering current and fossil species.
If this new classification has not radically changed from the previous morphological and anatomical data, nevertheless demolishes the idea that the extraordinary diversity of beetles is due to the onset of flowering plants (there are 140 million years), which would have provided shelter and food in abundance to these insects. Indeed, it appears that many modern beetle lineages appeared before about 300 million years before our era, roughly the same time as dinosaurs.
The large number of beetle species is rather explained by a significant survival of first lines and a high adaptability allows them to occupy a wide variety of ecological niches. At the appearance of the first flowering plants, there was already a hundred modern varieties of beetles. The role of plants is not yet clear, but they certainly contributed to the speciation of species and their evolution, as insects depend on plants that are necessarily a link between them and the beetles.
This new "family tree" is the subject of an article postmus published today in the journal Science. The analysis of the evolution of beetles is an important part of understanding life. It provides ski specialists who study biodiversity and the evolving structure of the species. postmus With 300 million years of history, what they do ... JI Science and Avenir.com 21/12/07 Share
Nature & Environment The Chamber of Agriculture of the Somme adopts the Parrot drone AUSTRALIA. 50 sharks killed for a controversial program to protect bathers BURMA. Valuable forests threatened by logging UNITED STATES. Climate change postmus is already a reality
A fireball postmus falls on VIDEO Canada. Christophe André deliver the keys to the mindfulness meditation Pl @ ntNet: the smartphone app that identifies plants MH370: statistics to detect the wreckage of a plane? VIDEO. In Texas, a bear climbing a cliff
VIDEO. A joystick capable of detecting emotions allergy is hereditary? The Chamber of Agriculture of the Somme adopts the Parrot drone AUSTRALIA. 50 sharks killed for a controversial program to protect bathers we born allergic?
EXCLUSIVE: Test your QUOTIENT INTUITIVE
On a VIDEO. A joystick capable of detecting emotions allergy is hereditary? The Chamber of Agriculture of the Somme adopts drone Parrot allergic we born? AUSTRALIA. 50 sharks killed for a controversial program to protect postmus bathers
A + A - With nearly 350,000 known species, beetles represent more than 25% of the life forms on the planet. The reason behind this amazing diversity are the subject of much research.
Better avoid studying too long otherwise the classification of beetles migraine risk of dawn saw the organized clutter What reign no less than 4 suborders, 17 superfamilies and 168 families! And the distinctions between many of these groups are not entirely clear. To restore some order to this mess, a team from Imperial College London and the Natural History Museum compared the genetic heritage of nearly postmus 2000 species covering 80% of families of beetles. The scientists were able to reconstruct a new evolutionary tree gathering current and fossil species.
If this new classification has not radically changed from the previous morphological and anatomical data, nevertheless demolishes the idea that the extraordinary diversity of beetles is due to the onset of flowering plants (there are 140 million years), which would have provided shelter and food in abundance to these insects. Indeed, it appears that many modern beetle lineages appeared before about 300 million years before our era, roughly the same time as dinosaurs.
The large number of beetle species is rather explained by a significant survival of first lines and a high adaptability allows them to occupy a wide variety of ecological niches. At the appearance of the first flowering plants, there was already a hundred modern varieties of beetles. The role of plants is not yet clear, but they certainly contributed to the speciation of species and their evolution, as insects depend on plants that are necessarily a link between them and the beetles.
This new "family tree" is the subject of an article postmus published today in the journal Science. The analysis of the evolution of beetles is an important part of understanding life. It provides ski specialists who study biodiversity and the evolving structure of the species. postmus With 300 million years of history, what they do ... JI Science and Avenir.com 21/12/07 Share
Nature & Environment The Chamber of Agriculture of the Somme adopts the Parrot drone AUSTRALIA. 50 sharks killed for a controversial program to protect bathers BURMA. Valuable forests threatened by logging UNITED STATES. Climate change postmus is already a reality
A fireball postmus falls on VIDEO Canada. Christophe André deliver the keys to the mindfulness meditation Pl @ ntNet: the smartphone app that identifies plants MH370: statistics to detect the wreckage of a plane? VIDEO. In Texas, a bear climbing a cliff
VIDEO. A joystick capable of detecting emotions allergy is hereditary? The Chamber of Agriculture of the Somme adopts the Parrot drone AUSTRALIA. 50 sharks killed for a controversial program to protect bathers we born allergic?
EXCLUSIVE: Test your QUOTIENT INTUITIVE
No comments:
Post a Comment