The biologists of the University of Arizona John Vins and Daniel Moe, Daniel Moe, found that most of the living organisms on Earregations had increased rapidly in variety. The work was published in the journal "Frontiers in Ecology and Evolution".
In the 20th century, British biologist John Haldain joked that if God had a beloved creature, it is the beetles. They make up almost half of all known insects. Scientists have long noticed that the evolutionary "tree of life" is very unequal. Some groups consist of thousands of closely related types, while others remain rare exceptions. But was this a universal rule? The researchers have now given a clear answer.
Scientists have analyzed data on 2 million known species, plants and insects to vertebrates and all animals in general. They studied the wealth, age, and their accumulation pace in 2.5 thousand families and dozens of large taxons. It turned out that the level of independent analysis, kingdoms, species, or families, more than 80% of modern species form a minority, an unnatural high rate of the growth of diversity.
For example, 50 million years ago, the ability to actively flew to the bats quickly occupy new ecological niches, and the emergence of flowers and the insects provided the rapidity of the promptness. In the Galapagos Islands, a similar process has led to the appearance of the famous Darwin serinos.
According to the authors, the main "accelerators" of such radiation are large evolutionary innovations, the transition to the soil, the transition to the herbotanus near the articles, and the flowers near the plants and specialized dusting.
Scientists say their conclusions apply only to the famous species. In case of bacteria, everything is more complicated. Only about 10,000 of their types have been described, but the real diversity can achieve millions or even trillions. If so, the bacteria are the pace of their slow evolution, which can become the dominant branch of the "tree of life", which can turn the whole picture upside down.
Translation of: Euromedia24.com
